Managing Crop Diseases with Fungicides Kay Ruden South Dakota State University

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SDSU Extension Fact Sheets SDSU Extension

2011 Managing Crop Diseases with Fungicides Kay Ruden South Dakota State University

Lawrence E. Osborne South Dakota State University

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Recommended Citation Ruden, Kay and Osborne, Lawrence E., "Managing Crop Diseases with Fungicides" (2011). SDSU Extension Fact Sheets. Paper 173. http://openprairie.sdstate.edu/extension_fact/173

This Fact Sheet is brought to you for free and open access by the SDSU Extension at Open PRAIRIE: Open Public Research Access Institutional Repository and Information Exchange. It has been accepted for inclusion in SDSU Extension Fact Sheets by an authorized administrator of Open PRAIRIE: Open Public Research Access Institutional Repository and Information Exchange. For more information, please contact [email protected]. FS 917 January 2011 (revised) Managing Crop Diseases with Fungicides

Kay Ruden Lawrence E. Osborne Research/Extension Associate Extension Plant Pathologist Extension Plant Pathology South Dakota State University

This guide contains a list of fungicides labeled for It is important to remember that fungicides are use in South Dakota at the time of publication. The active only against fungi and do not directly protect list is dynamic and prone to frequent changes. It against bacterial or viral diseases, nematodes, or therefore should not be considered as a substitute abiotic stresses. And while there are many fungal for label information. Always read and follow label diseases than can and do attack our crops, there are directions for approved uses of these products, just a few that are routinely responsible for major and check with the South Dakota Department of economic losses. In corn and small-grain cereals, Agriculture for up-to-date product registration the residue-borne leaf spot fungi can be a problem information. during wet weather. For cereals, these diseases include mainly tan spot (caused by Pyrenophora According to the USDA 2007 Census of Agricul- tritici-repentis) and the Septoria/Stagonospora leaf ture, acreage in South Dakota treated with disease spot complex. Another regularly occurring disease management chemicals has grown from around of wheat and barley is Fusarium head blight or 41,000 acres in 2002 to nearly 800,000 acres in scab (Fusarium graminearum), which can signifi- 2007, representing a nearly 2,000% increase in cantly affect both yield and grain quality. In corn, usage over just five years. For our major crops, fun- gray leaf spot (Cercospora zeae-maydis) can occur gicides are most effective as part of an integrated on susceptible hybrids; however, gray leaf spot has disease management strategy. Foliar fungicides not been a major problem most years in South alone are not the most effective means of preserv- Dakota. Other corn leaf blights (northern corn leaf ing healthy plants. Well-adapted, disease-resistant blight, eyespot, or others) may also occur spo- varieties should always be used where possible and radically. Wheat leaf rust (Puccinia triticina) is a be combined with good cultural practices, such potential problem each year for small grain produc- as crop rotation, disease-free seed, and optimal tion; however, varieties with excellent resistance to planting dates. Additionally, good crop scouting the disease are available, which should reduce the methods will help producers make sound decisions need for fungicides in many cases. Various rusts about when and where to apply fungicides as the (sunflower rust, common rust of corn, southern need arises. rust of corn, and others) may attack other South

Expected yield Expected yield increase Expected selling price Expected Gross Return X X = (bu/A) (10–20%) ($/bu) ($/A)

Expected Gross Return Fungicide and Application Costs Expected Net Return — = ($/A) ($/A) ($/A)

SOUTH DAKOTA STATE UNIVERSITY College of Agriculture & Biological Sciences • Cooperative Extension Service • U.S. Department of Agriculture

1 Dakota crops. Soybean rust (Phakopsora pachyrizi), COMMONLY USED FUNGICIDES: which is a potentially destructive disease in some Strobilurins (mode of action: respiration (QoI) states, has not been detected in South Dakota (as of inhibitors, FRAC Code 11): 2010). In general, soybeans have relatively minor azoxystrobin (Quadris; also a component of foliar fungal problems in South Dakota; these fun- Quilt, Quilt Xcel, Quadris Xtra, Amistar) gal problems include brown spot (Septoria fluoxastrobin (Evito) glycines), Cercospora leaf spot (Cercospora kikuchii), pyraclostrobin (Headline; also a component of and frogeye leaf spot (Cercospora sojina). TwinLine, Headline AMP) trifloxystrobin (a component of Stratego, The cost of fungicide management varies widely, Stratego YLD) depending on product and application method. Assuming ground-based application costs of Triazoles (mode of action: sterol biosynthesis around $5 per acre, the most commonly used inhibitors, FRAC Code 3): products can be applied at recommended rates for propiconazole (Tilt, PropiMax EC, Bumper; around $15 to $30 per acre in most crops. Aerial also a component of Stratego, Quilt, Quilt Xcel) application is generally a bit more costly. Prices may prothioconazole (Proline, also a component of vary depending on the dealer and the local market Prosaro, Stratego YLD) conditions. tebuconazole (Folicur, Orius, TebuStar, and others; a component of Prosaro) A word about resistance management... metconazole (Caramba; also a component of Resistance to fungicides can develop in pathogen TwinLine, Headline AMP) populations under certain conditions. When selec- myclobutanil (Laredo) tion pressure is placed on fungi through repeated tetraconazole (Domark) application of a single product or class of products, cyproconazole (Alto 100SC; component of the population may develop reduced sensitivity to Quadris Xtra) those chemicals. This can happen very quickly if repeated applications are made in a single season. Other fungicide groups (multi-site mode of Strobilurin fungicides (see list below) seem to be action; FRAC codes M3, M5) especially prone to this effect, while triazoles have mancozeb (Dithane, Penncozeb) somewhat less risk of inducing resistance. The car- chlorothalonil (Bravo) bamate and organochlorine protectant fungicides have multi-site modes of action and much lower General recommendations for wheat risk of resistance development. To reduce the risk and other small grains: of developing fungicide resistant pathogens, adopt Standard flag-leaf applications: The flag leaf a fungicide resistance management strategy, which (or uppermost leaf) of small-grain cereals is very may include the following practices: important to achieving maximum production and grain quality, and we strive to protect the leaf with • Apply fungicides only when necessary to prevent our standard fungicide applications to those crops. or treat fungal disease. Diseases such as leaf rust and leaf spots can affect • Apply only at recommended rates. the productive leaf area if resistant varieties are not • Use integrated management to reduce the number used and the weather favors pathogen infection of applications necessary. and spread. This stage is reached when the ligule • Avoid repeated applications of the same product of the last (flag) leaf has emerged from the whorl. or mode-of-action to a single site. The triazoles and strobilurins as well as the pre- • Use strobilurins only as preventatives. mixed fungicide products are generally effective at • Strobilurins should represent no more than managing these diseases. Refer to the most recent 30–50% of total number of applications to a site. recommendation information from SDSU for more specific guidelines.

2 Flowering application for scab control: Fusarium situations are generally favorable for leaf diseases; head blight, or scab, occurs frequently in South Da- however, many hybrids possess strong resistance kota, especially on spring grains in the more humid to some of the major pathogens. To maximize the parts of the state. The pathogen infects the plant economic benefits of fungicides in corn, fungi- during and shortly after anthesis, or flowering pe- cides should be used when disease is present and riod. When weather has been especially warm and at labeled rates at the proper timing. Use particular wet during and prior to heading, scab can be a ma- caution when considering application of fungi- jor problem. The triazole fungicides can be effective cide during late vegetative stages prior to tasseling at limiting the disease impact if properly timed. (V12-V14). Evidence suggests that certain tank- For greatest efficacy, application should occur as mix partners and some adjuvants have the potential the plant is actively flowering (when the anthers to damage developing ears when applied at these are yellow). For optimal control, producers should stages. combine fungicides with scab-resistant varieties and should utilize a disease-forecasting tool such Soybeans: Applications to soybeans are usually as the SDSU Wheat and Barley Scab Risk Advisory made in the early reproductive stages of the crop (found at http://plantsci.sdstate.edu/planthealth). (R1–R5). Soybean fungicides are relatively new to South Dakota growers, having emerged largely in Early applications: In continuous wheat with response to the threat of soybean rust. Apart from standing stubble, an early application of fungicide soybean rust, which has not been detected in South is sometimes tank-mixed with post-emergent her- Dakota, there are relatively few foliar disease of bicides to prevent build-up of leaf diseases such as soybean that are considered to be major produc- tan spot. These applications typically cost less than tion threats in this state. However, a number of very standard-timing applications (flag leaf or flower- effective soybean fungicides are now labeled for use ing) because they are generally applied at half the in South Dakota. recommended rates and don’t require a separate pass through the field. These applications may not Oilseed crops: Fewer fungicide products are be economical unless the above conditions (con- registered for sunflowers and safflower than for tinuous crop, stubble, reduced rate, and tank-mixed our other major crops; however, these crops oc- with herbicide) are met; however, the reduced rates casionally experience severe disease outbreaks. of early applications increase the risk of fungicide Rust of sunflower is an emerging disease threat in resistance in the pathogen population. Early ap- the Northern Great Plains and can be controlled plications of strobilurins fungicides should not be through resistance or a well-timed (early flowering) followed by flag-leaf applications containing the fungicide application. Safflower can be susceptible same mode of action. to Alternaria leaf blight in wet years, or under irrigation, though the disease can be effectively Also see: SDSU Fact Sheet FS952 “South Dakota controlled with fungicide application at the first Wheat Fungicide Recommendations” signs of infection.

General recommendations for row/pulse crops: Field Pea/Chickpea: Fungicides in these crops Corn: Corn fungicide applications are often used primarily target Ascochyta, a seed- and soil-borne to protect the plants during the stages from VT fungus that can cause very damaging leaf and/or (tasseling) to R1 (silking). The major foliar diseases pod blights during wet years. Sound cultural prac- of corn are somewhat sporadic or less severe in tices should be used in combination with fungi- South Dakota than in some neighboring states, and cides and include the following: resistant cultivars, therefore fungicides should only be used when dis- delayed planting, disease-free seed, appropriate ease risk is high. High humidity or frequent rainfall residue management, and extended crop rotations.

South Dakota State University, South Dakota counties, and U.S. Department of Agriculture cooperating. South Dakota State University is an Affirmative Action/Equal Opportunity Employer and offers all benefits, services, education, and employment opportunities without regard for race, color, creed, religion, national origin, ancestry, citizenship, age, gender, sexual orientation, disability, or Vietnam Era veteran status.

FS917: 750 printed at $?.??each, February 2011, revised annually since January 2003. Printed on Recycled Paper.

3 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Rust diseases azoxystrobin 4–12 fl oz/A Do not apply within 14 days of Pathogen resistance management: harvest for forage and hay. Leaf rust (Puccinia Quadris Flowable Apply prior to disease development Do not apply more than 24.5 fl oz of triticina) Fungicide up to late head emergence (Feekes Do not apply within 45 days of product/A per season. growth stage 10.5). harvest for grain and straw. Stem rust (Puccinia Do not make more than two graminis f.sp. Tritici) applications of strobilurin fungicides in one year to minimize resistance Stripe rust (Puccinia issues. striiformis) A crop oil concentrate adjuvant may be added at 1.0% V/V to optimize efficacy. copper See individual product labels. No limitations. More effective on Septoria diseases, spot blotch and net blotch than on *Various copper Typically applied at 7–10 day rusts. products intervals beginning at early boot stage. mancozeb Do not make more than three Use Latron CS-7 surfactant to applications during the season. improve product performance. Dithane M-45 2 lbs/A Do not apply after Feekes growth Mancozeb products are not Manzate Flowable 1.6 qts/A stage 10.5 or heading, and not less specifically labeled for stripe rust or than 26 days before harvest. stem rust, only for leaf rust. Penncozeb 4FL 0.8–1.6 qts/A Do not graze livestock in treated Low rates are intended for use at the Penncozeb 75 DF 1–2 lbs/A areas prior to harvest. tillering stage when the crop canopy volume is relatively small. Penncozeb 80 WP 1–2 lbs/A Do not apply more than 4.8 qts (Manzate Flowable), 6 lbs Start applications at disease onset (Penncozeb 80WP), or 6.4 lbs or when crop is in the tillering to (Penncozeb 75DF) of product per jointing stage and repeat at 7–10 acre per season. day intervals. mancozeb + Do not make more than three Use Latron CS-7 surfactant to surfactant applications during the season. improve product performance. Dithane DF 2 lbs/A Do not apply after Feekes growth Mancozeb products are not Rainshield stage 10.5 or heading, and not less specifically labeled for stripe rust or than 26 days before harvest. stem rust, only for leaf rust. Dithane F-45 1.6 qts/A Rainshield Do not graze livestock in treated Do not apply more than 6 lbs areas prior to harvest. (Dithane DF and Manzate Pro-Stick) Manzate Pro-Stick 2 lbs/A of product per acre per season. Start applications at disease onset or when crop is in the tillering to jointing stage and repeat at 7–10 day intervals.als metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Season. Caramba Apply prior to disease development. Do not apply within 30 days of harvest. Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or harvest for forage, 40 days before 10 gal/A ground. Tilt Apply up to Feekes growth stage harvest for grain and straw and 10.5 (heading). 45 days before harvest for hay Do not apply more than 4 fl oz/A PropiMax EC (PropiMax). Do not apply within 30 per season if forage or hay will be days of harvest for forage or hay harvested. Bumper (Tilt and Bumper). Do not apply more than 8 fl oz of Do not apply Tilt and Bumper after product/A per season. Feekes growth stage 10.5 to avoid possible illegal residues. propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt and Quilt Xcel may be applied azoxystrobin applications in a single growing by ground, air, or chemigation. Apply through full head emergence season. Allow at least 14 days Quilt (Feekes growth stage 10.5). between applications. Do not harvest within 30 days for forage or hay. Quilt Xcel Do not apply after Feekes growth stage 10.5 to avoid possible illegal Do not apply more than 28.0 fl oz/A residues. of Quilt, Quilt Xcel/year.

4 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Rust diseases propiconazole + 10 fl oz/A If 20 fl oz/A are applied (two Do not apply after full head emer- trifloxystrobin applications), do not graze and do gence (Feekes growth stage 10.5). Leaf rust (Puccinia Begin preventative applications not cut for forage or hay. triticina) Stratego when conditions favor disease Apply a minimum of 2 gal/A by air or development. If one application (10 fl oz/A), do 10 gal/A ground. Stem rust (Puccinia not graze or feed livestock treated graminis f.sp. Tritici) Reapply in 14 days if disease forage for 30 days or harvest for Do not apply within 35 days of persists or if weather conditions hay 45 days after application. harvest. Stripe rust (Puccinia favor continued disease. striiformis) Do not apply more than 20 fl oz of For early season disease suppression product per acre per season. (Continued) of rusts use 4–8 fl oz/A. prothioconazole 4.3–5 fl oz/A Apply up to 2 applications per Apply a minimum of 2 gal/A by air year. if applied prior to early flowering or Proline Start applications at disease onset 5 gal/A by air if applied at the early and repeat at a 14 day interval if Do not apply more than 9.37 fl flower growth stage (Feekes Growth conditions remain favorable for oz/A/season. Stage 10.51) or 10 gal/A ground. disease development. Do not apply within 30 days of harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Apply a minimum of 2 gal/A by air tebuconazole season. if applied prior to early flowering or Start applications at disease onset. 5 gal/A by air if applied at the early Prosaro 421 SC Do not allow livestock to graze or flower growth stage (Feekes Growth feed green forage to livestock until Stage 10.51) or 10 gal/A ground. 6 days after treatment. For optimum disease control, use Straw cut after harvest may be fed a spray surfactant at the lowest or used for bedding. specified rate. Do not apply within 30 days of harvest. pyraclostrobin 6–9 fl oz/A Maximum of two applications. Apply no later than the beginning of flowering (Feekes growth stage 10.5). Headline Do not harvest wheat hay or feed green chopped wheat within 14 Do not apply more than 18 fl oz/A per days after application. season. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season. tebuconazole 4 fl oz/A Do not apply more than 4 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. AmTide Tebu 3.6F Begin application when disease first appears. Do not apply within 30 days of For optimum disease control, use Embrace harvest. a spray surfactant at the lowest specified rate. Folicur Do not allow livestock to graze or feed green forage to live-stock Straw cut after harvest may be fed or Monsoon until 6 days after treatment. used for bedding. Onset 3.6L Orius 3.6F Solera Tebuconazole 3.6F Tebusha 3.6FL TebuStar 3.6L Tebuzol 3.6F Toledo

5 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Leaf spotting azoxystrobin 4–12 fl oz/A Do not apply within 14 days of Pathogen resistance management: diseases harvest for forage and hay. Quadris Flowable Apply prior to disease development Do not apply more than 24.5 fl oz of Septoria leaf Fungicide up to late head emergence (Feekes Do not apply within 45 days of product/A per season. diseases growth stage 10.5). harvest for grain and straw. (S. nodorum, S. tritici, Quadris is not specifically Do not make more than two and S. avenae f.sp. registered for spot blotch. applications of strobilurin fungicides triticea) in one year to minimize resistance issues. Septoria glume blotch (S. nodorum) A crop oil concentrate adjuvant may be added at 1.0% V/V to optimize Tan spot (Pyrenophora efficacy. tritici-repentis) copper See individual product labels. No limitations Coppers are most effective on Spot blotch Septoria diseases, spot blotch, and (Helminothosporium *Various copper Typically applied at 7–10 day net blotch. sativum) products intervals beginning at early boot stage. mancozeb Do not make more than three Use Latron CS-7 surfactant to applications during the season. improve product performance. Dithane M-45 2 lbs/A Do not apply after Feekes growth Low rates are intended for use at the Manzate Flowable 1.6 qts/A stage 10.5 or heading, and not less tillering stage when the crop canopy than 26 days before harvest. volume is relatively small. Penncozeb 4FL 0.8–1.6 qts/A Do not graze livestock in treated Penncozeb 75 DF 1–2 lbs/A areas prior to harvest. Penncozeb 80 WP 1–2 lbs/A Do not apply more than 4.8 qts (Manzate Flowable), 6 lbs Start applications at disease onset (Penncozeb 80WP), or 6.4 lbs or when crop is in the tillering to (Penncozeb 75DF) of product per jointing stage and repeat at 7–10 acre per season. day intervals. mancozeb + Do not make more than three Use Latron CS-7 surfactant to surfactant applications during the season. improve product performance. Dithane DF 2 lbs/A Do not apply after Feekes growth Do not apply more than 6 lbs Rainshield stage 10.5 or heading, and not less (Dithane DF and Manzate Pro-Stick) than 26 days before harvest. of product per acre per season. Dithane F-45 1.6 qts/A Rainshield Do not graze livestock in treated areas prior to harvest. Manzate Pro-Stick 2 lbs/A Start applications at disease onset or when crop is in the tillering to jointing stage and repeat at 7–10 day intervals. metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Season. Caramba Apply prior to disease development. Do not apply within 30 days of harvest. Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 2–4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or harvest for forage, 40 days before 10 gal/A ground. Tilt Apply up to Feekes growth stage harvest for grain and straw and 10.5 (heading). 45 days before harvest for hay Do not apply more than 4 fl oz/A PropiMax EC (PropiMax). Do not apply within 30 per season if forage or hay will be days of harvest for forage or hay harvested. Bumper (Tilt and Bumper). Do not apply more than 8 fl oz of Do not apply Tilt and Bumper after product/A per season. Feekes growth stage 10.5 to avoid 2 fl oz/A rate is for early season tan possible illegal residues. spot control.

6 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Leaf spotting propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt, Quilt Xcel may be applied by diseases azoxystrobin applications in a single growing ground, air, or chemigation. Apply through full head emergence season. Allow at least 14 days Septoria leaf Quilt (Feekes growth stage 10.5). between applications. Do not harvest within 30 days for diseases forage or hay. (S. nodorum, S. tritici, Quilt Xcel Use the 7–14 fl oz/A rate for early Do not apply after Feekes growth and S. avenae f.sp. season disease suppression. stage 10.5 to avoid possible illegal Low rates are intended for use at the triticea) residues. tillering stage when the crop canopy volume is relatively small. Septoria glume Do not apply more than 28.0 fl blotch (S. nodorum) oz/A of Quilt, Quilt Xcel/year. Tan spot (Pyrenophora propiconazole + 10 fl oz/A If 20 fl oz/A are applied (two Apply a minimum of 2 gal/A by air or tritici-repentis) trifloxystrobin applications), do not graze and do 10 gal/A ground. For early season disease control of not cut for forage or hay. Spot blotch Stratego tan spot and Septoria use 4-8 fl oz/A. Do not apply within 35 days of (Helminothosporium Begin preventative applications If one application is/or a total of harvest. sativum) when conditions favor disease 10 fl oz/A, do not graze or feed development. livestock treated forage for 30 Do not apply more than 20 fl oz of (Continued) days or harvest for hay 45 days product per acre per season. A second application may be made after application. at least 14 days following the first. Do not apply after full head emergence (Feekes growth stage 10.5) prothioconazole 4.3–5 fl oz/A Apply up to 2 applications per Apply a minimum of 2 gal/A by air year. if applied prior to early flowering or Proline Start applications at disease onset 5 gal/A by air if applied at the early and repeat at a 14 day interval if Do not apply more than 9.37 fl flower growth stage (Feekes Growth conditions remain favorable for oz/A/season. Stage 10.51) or 10 gal/A ground. disease development. Do not apply within 30 days of harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Apply a minimum of 2 gal/A by air tebuconazole season. if applied prior to early flowering or Start applications at disease onset. 5 gal/A by air if applied at the early Prosaro 421 SC Do not allow livestock to graze or flower growth stage (Feekes Growth feed green forage to livestock until Stage 10.51) or 10 gal/A ground. 6 days after treatment. For optimum disease control, use Straw cut after harvest may be fed a spray surfactant at the lowest or used for bedding. specified rate. Do not apply within 30 days of harvest. pyraclostrobin 3–9 fl oz/A Maximum of two applications. Apply no later than the beginning of flowering (Feekes growth stage 10.5). Headline 3–6 fl oz/A applied early season with Do not apply more than 18 fl oz/A herbicide. per season. 6–9 fl oz/A applied up to Feekes Do not harvest wheat hay or feed growth stage 10.5 green chopped wheat within 14 days after application. If conditions favor disease, apply the higher rate. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season. Powdery mildew azoxystrobin 7.5–11 fl oz/A Do not apply within 14 days of Pathogen resistance management: (Blumeria graminis harvest for forage and hay. f.sp. tritici) Quadris Flowable Apply prior to disease development Do not apply more than 24.5 fl oz of Fungicide up to late head emergence (Feekes Do not apply within 45 days of product/A per season. growth stage 10.5). harvest for grain and straw. Do not make more than two applications of strobilurin fungicides in one year. A crop oil concentrate adjuvant may be added at 1.0% V/V to optimize efficacy.

7 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Powdery mildew metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ (Blumeria graminis Season. f.sp. tritici) Caramba Apply prior to disease development. Do not apply within 30 days of harvest. (Continued) Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 2–4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or harvest for forage, 40 days before 10 gal/A ground. Tilt Apply up to Feekes growth stage harvest for grain and straw and 10.5 (heading). 45 days before harvest for hay Do not apply more than 4 fl oz/A PropiMax EC (PropiMax). Do not apply within per season if forage or hay will be 30 days of harvest for forage or harvested. Bumper hay (Tilt and Bumper). Do not apply more than 8 fl oz of Do not apply Tilt and Bumper after product/A per season. Feekes growth stage 10.5 to avoid Low rates are intended for use at the possible illegal residues. tillering stage when the crop canopy volume is relatively small. propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt, Quilt Xcel may be applied by azoxystrobin applications in a single growing ground, air, or chemigation. Apply through full head emergence season. Allow at least 14 days Quilt (Feekes growth stage 10.5). between applications. Do not harvest within 30 days for forage or hay. Quilt Xcel Use the 7–14 fl oz/A rate for early Do not apply after Feekes growth season disease suppression. stage 10.5 to avoid possible illegal Do not apply more than 28.0 fl oz/A residues. of Quilt, Quilt Xcel/year. propiconazole + 10 fl oz/A If 20 fl oz/A are applied (two Apply a minimum of 2 gal/A by air or trifloxystrobin applications), do not graze and do 10 gal/A ground. Begin preventative applications not cut for forage or hay. Stratego when conditions favor disease Do not apply within 35 days of development. If one application (10 fl oz/A), do harvest. not graze or feed livestock treated A second application may be made forage for 30 days or harvest for Do not apply more than 20 fl oz of at least 14 days following the first. hay 45 days after application. product per acre per season. For early season disease control of powdery mildew use 4–8 fl oz/A. Do not apply after full head emergence (Feekes growth stage 10.5). prothioconazole 4.3–5 fl oz/A Apply up to 2 applications per Apply a minimum of 2 gal/A by air year. if applied prior to early flowering or Proline Start applications at disease onset 5 gal/A by air if applied at the early and repeat at a 14 day interval if Do not apply more than 9.37 fl flower growth stage (Feekes Growth conditions remain favorable for oz/A/season. Stage 10.51) or 10 gal/A ground. disease development. Do not apply within 30 days of harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Apply a minimum of 2 gal/A by air tebuconazole season. if applied prior to early flowering or Start applications at disease onset. 5 gal/A by air if applied at the early Prosaro 421 SC Do not allow livestock to graze or flower growth stage (Feekes Growth feed green forage to livestock until Stage 10.51) or 10 gal/A ground. 6 days after treatment. For optimum disease control, use Straw cut after harvest may be fed a spray surfactant at the lowest or used for bedding. specified rate. Do not apply within 30 days of harvest. pyraclostrobin 6–9 fl oz/A Maximum of two applications. Apply no later than the beginning of flowering (Feekes growth stage 10.5). Headline Do not apply more than 18 fl oz/A per season. Do not harvest wheat hay or feed green chopped wheat within 14 days after application.

8 FOLIAR FUNGICIDES FOR WHEAT Disease Fungicide Dosage and Interval Limitations Special Notes Powdery mildew pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of (Blumeria graminis metconazole flowering (Feekes 10.5). f.sp. tritici) Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per (Continued) high. application. season. sulfur See individual product labels. No PHI listed. Elemental sulfur is used primarily for powdery mildew control. Avoid *Various sulfur application during periods of high products are temperature or plant injury may available. occur. Head Blight/Scab metconazole 13.5–17 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ (Fusarium Season. graminearum and Caramba Apply at the beginning of anthesis Do not apply within 30 days of others) (Feekes growth stage 10.51). harvest. propiconazole 4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or harvest for forage, 40 days before 10 gal/A ground. Tilt Apply at approximately 50% harvest for grain and straw and flowering. 45 days before harvest for hay Do not apply more than 4 fl oz/A PropiMax EC (PropiMax). per season if forage or hay will be harvested. Bumper Do not apply within 30 days of harvest for forage or hay (Tilt, Do not apply more than 8 fl oz of Bumper). product/A per season. prothioconazole 5.0–5.7 fl oz/A Do not apply more than 9.37 fl Apply a minimum of 5 gal/A by air or oz/A/season. 10 gal/A ground. Proline Apply at early flowering (Feekes growth stage 10.51). Do not apply within 30 days of Do not apply within 30 days of harvest. harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A Apply a minimum of 5 gal/A by air or tebuconazole /season. 10 gal/A ground. Apply at the beginning of anthesis Prosaro 421 SC (Feekes growth stage 10.51). Do not allow livestock to graze or For optimum disease control, use feed green forage to livestock until a spray surfactant at the lowest 6 days after treatment. specified rate. Straw cut after harvest may be fed or used for bedding. tebuconazole 4 fl oz/A Do not apply more than 4 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. Amtide Tebu 3.6F Apply at the beginning of anthesis (Feekes growth stage 10.51). Do not apply within 30 days of For optimum disease control, use Embrace harvest. a spray surfactant at the lowest specified rate. Folicur Do not allow livestock to graze or feed green forage to live-stock Straw cut after harvest may be fed or Monsoon until 6 days after treatment. used for bedding. Onset 3.6L Orius 3.6F Solera Tebuconazole 3.6F Tebusha 3.6FL TebuStar 3.6L Tebuzol 3.6F Toledo *Copper and sulfur products are acceptable for organic production.

9 FOLIAR FUNGICIDES FOR BARLEY Disease Fungicide Dosage and Interval Limitations Special Notes Leaf rust azoxystrobin 6–12 fl oz/A (Leaf rust) Do not apply within 14 days of Pathogen resistance management: (Puccinia hordei) harvest for forage and hay. Do not apply more than 24.5 fl oz of Quadris Flowable 9–12 fl oz/A (Net blotch) product/A per season. Septoria blotch Fungicide Do not apply within 45 days of (S. passerinii and S. Apply prior to disease development harvest for grain and straw. Do not make more than two avenae f.sp. triticea) up to until late head emergence applications of strobilurin fungicides (Feekes growth stage 10.5). in one year. Spot blotch (Helminothosporium A crop oil concentrate adjuvant may sativum) be added at 1.0% V/V to optimize efficacy. Net blotch (Pyrenophora teres) copper See individual product labels. No PHI listed.

Scald *Various copper Typically applied at 7–10 day (Rhyncosporium products intervals beginning at early boot secalis) stage. mancozeb Do not make more than three Use Latron CS-7 surfactant to applications during the season. improve product performance. Dithane M-45 2 lbs/A Do not apply after Feekes growth Low rates are intended for use at the Manzate Flowable 1.6 qts/A stage 10.5 or heading, and not less tillering stage when the crop canopy than 26 days before harvest. volume is relatively small. Penncozeb 4FL 0.8–1.6 qts/A Do not graze livestock in treated Penncozeb 75 DF 1–2 lbs/A areas prior to harvest.

Penncozeb 80 WP 1–2 lbs/A Do not apply more than 4.8 qts (Manzate Flowable), 6 lbs Start applications at disease onset (Penncozeb 80WP), or 6.4 lbs or when crop is in the tillering to (Penncozeb 75DF) of product per jointing stage and repeat at 7–10 acre per season. day intervals. mancozeb + Do not make more than three Use Latron CS-7 surfactant to surfactant applications during the season. improve product performance.

Dithane DF 2 lbs/A Do not apply after Feekes growth Do not apply more than 6 lbs Rainshield stage 10.5 or heading, and not less (Dithane DF and Manzate Pro-Stick) than 26 days before harvest. of product per acre per season. Dithane F-45 1.6 qts/A Rainshield Do not graze livestock in treated areas prior to harvest. Manzate Pro-Stick 2 lbs/A

Start applications at disease onset or when crop is in the tillering to jointing stage and repeat at 7–10 day intervals. metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Apply prior to disease development. Season. Caramba Do not apply within 30 days of Apply immediately after flag leaf harvest. emergence (Feekes growth stage 9) for optimum results. propiconazole 4 fl oz/A Do not apply PropiMax and Apply a minimum of 2 gal/A by air or Bumper within 30 days of harvest 10 gal/A ground. Tilt Apply up to Feekes growth stage for forage, 40 days before harvest 10.5 (heading). for grain and straw and 45 days Do not apply more than 4 fl oz/A PropiMax EC before harvest for hay. per season if forage or hay will be harvested. Bumper Do not apply Tilt within 30 days of harvest for forage or hay. Do not apply more than 8 fl oz of product/A per season. Do not apply Tilt within 45 days of harvest. propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt, Quilt Xcel may be applied by azoxystrobin applications in a single growing ground, air, or chemigation. season. Allow at least 14 days Quilt between applications. Do not harvest within 30 days for forage or hay. Quilt Xcel Do not apply within 45 days of harvest. Do not apply more than 28.0 fl oz/A of Quilt, Quilt Xcel/year.

10 FOLIAR FUNGICIDES FOR BARLEY Disease Fungicide Dosage and Interval Limitations Special Notes Leaf rust propiconazole + Do not apply more than 2 Do not apply within 40 days of (Puccinia hordei) trifloxystrobin applications (14 fl oz/A) in a single harvest. growing season. Allow at least 14 Septoria blotch Stratego 7 fl oz/A days between applications. If 2 applications (14 fl oz/A) are (S. passerinii and S. applied, do not allow livestock to avenae f.sp. triticea) Apply until the ligule of the flag leaf If one application (7 fl oz/A) is graze or harvest for forage or hay. emerges (Feekes growth stage 9). applied, do not allow livestock Spot blotch to graze or feed for 30 days or (Helminothosporium For early season control of net and harvest hay for 45 days after sativum) spot blotch use 4–5 fl oz/A. application.

Net blotch prothioconazole 2.8–4.3 fl oz/A Apply up to 2 applications per year. Apply a minimum of 2 gal/A by air if (Pyrenophora teres) applied prior to heading or 5 gal/A by Proline Start applications at disease onset Do not apply more than 9.37 fl air if applied at the heading growth Scald and repeat at a 14 day interval if oz/A/season. stage (Feekes growth stage 10.5) or (Rhyncosporium conditions remain favorable for 10 gal/A ground. secalis) disease development. Do not apply within 32 days of harvest. (Continued) prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Do not apply within 30 days of tebuconazole season. harvest. Start applications at disease onset. Prosaro 421 SC Do not allow livestock to graze or Apply a minimum of 2 gal/A by air if feed green forage to livestock until applied prior to heading or 5 gal/A by 6 days after treatment. air if applied at the heading growth stage (Feekes growth stage 10.5) or Straw cut after harvest may be fed 10 gal/A ground. or used for bedding. For optimum disease control, use a spray surfactant at the lowest specified rate. pyraclostrobin 6–9 fl oz/A Maximum of two applications. Do not apply after 50% head emergence (Feekes growth stage Headline 3- 6 fl oz/A for early season control Do not apply more than 18 fl oz/A 10.3). of Septoria leaf and glume blotch, per season. Net blotch and Spot blotch. 14 day PHI for barley hay and feeding green-chopped barley. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season.

Do not harvest barley hay within 14 days after the last application. tebuconazole 4 fl oz/A (Rusts) Do not apply more than 4 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. AmTide Tebu 3.6F Begin application when disease first appears. Do not apply within 30 days of For optimum disease control, use Embrace harvest. a spray surfactant at the lowest specified rate. Folicur Do not allow livestock to graze or feed green forage to live-stock Straw cut after harvest may be fed or Monsoon until 6 days after treatment. used for bedding.

Onset 3.6F

Orius 3.6F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzole 3.6F

Toledo

11 FOLIAR FUNGICIDES FOR BARLEY Disease Fungicide Dosage and Interval Limitations Special Notes Powdery mildew azoxystrobin 12 fl oz/A Do not apply within 14 days of Pathogen resistance management: (Blumeria graminis harvest for forage and hay. Do not apply more than 24.5 fl oz of f.sp. hordei) Quadris Flowable Apply prior to disease development product/A per season. Fungicide up to until late head emergence Do not apply within 45 days of (Feekes growth stage 10.5). harvest for grain and straw. Do not make more than two applications of strobilurin fungicides in one year.

A crop oil concentrate adjuvant may be added at 1.0% V/V to optimize efficacy. metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Season. Caramba Apply prior to disease development. Do not apply within 30 days of harvest. Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 2–4 fl oz/A Do not apply PropiMax EC and Apply a minimum of 2 gal/A by air or Bumper within 30 days of harvest 10 gal/A ground. Tilt Apply up to Feekes growth stage for forage, 40 days before harvest 10.5 (heading). for grain and straw and 45 days Do not apply more than 4 fl oz/A PropiMax EC before harvest for hay. per season of forage or hay will be harvested. Bumper Do not apply Tilt within 30 days of harvest for forage or hay. Do not apply more than 8 fl oz of product/A per season. Do not apply Tilt within 45 days of harvest. Low rates are intended for use at the tillering stage when the crop canopy volume is relatively small. propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt, Quilt Xcel may be applied by azoxystrobin applications in a single growing ground, air, or chemigation. Use the 7–14 fl oz/A rate for early season. Allow at least 14 days Quilt season disease suppression. between applications. Do not harvest within 30 days for forage or hay. Quilt Xcel Do not apply within 45 days of harvest. Do not apply more than 28.0 fl oz/A of Quilt, Quilt Xcel/year. propiconazole + Do not apply more than 2 Do not apply within 40 days of trifloxystrobin applications (14 fl oz/A) in a single harvest. growing season. Allow at least 14 Stratego 7 fl oz/A days between applications. If 2 applications (14 fl oz/A) are applied, do not allow livestock to Apply until the ligule of the flag leaf If one application (7 fl oz/A) is graze or harvest for forage or hay. emerges (Feekes growth stage 9). applied, do not allow livestock to graze or feed for 30 days or harvest hay for 45 days after application. prothioconazole 2.8–4.3 fl oz/A Apply up to 2 applications per year. Apply a minimum of 2 gal/A by air if applied prior to heading or 5 gal/A by Proline Start applications at disease onset Do not apply more than 9.37 fl air if applied at the heading growth and repeat at a 14 day interval if oz/A/season. stage (Feekes Growth Stage 10.5) or conditions remain favorable for 10 gal/A ground. disease development. Do not apply within 32 days of harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Do not apply within 30 days of tebuconazole season. harvest. Start applications at disease onset. Prosaro 421 SC Do not allow livestock to graze or Apply a minimum of 2 gal/A by air if feed green forage to livestock until applied prior to heading or 5 gal/A by 6 days after treatment. air if applied at the heading growth stage (Feekes growth stage 10.5) or Straw cut after harvest may be fed 10 gal/A ground. or used for bedding. For optimum disease control, use a spray surfactant at the lowest specified rate.

12 FOLIAR FUNGICIDES FOR BARLEY Disease Fungicide Dosage and Interval Limitations Special Notes Powdery mildew pyraclostrobin 6–9 fl oz/A Maximum of two applications. Do not apply after 50% head (Blumeria graminis emergence (Feekes growth stage f.sp. hordei) Headline Do not apply more than 18 fl oz/A 10.3). per season. (Continued) 14 day PHI for barley hay and feeding green-chopped barley. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season.

Do not harvest barley hay within 14 days after the last application. sulfur See individual product labels. No PHI listed. Elemental sulfur is used primarily for powdery mildew control. Avoid *Various sulfur application during periods of high products are temperature or plant injury may available. occur. Head Blight/Scab metconazole 13.5–17 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ (Fusarium Season. graminearum and Caramba Apply at the beginning of anthesis Do not apply within 30 days of others) (Feekes growth stage 10.51). harvest. propiconazole 4 fl oz/A Do not apply PropiMax EC within Apply a minimum of 2 gal/A by air or 30 days of harvest for forage, 40 10 gal/A ground. Tilt Apply at approximately 50% days before harvest for grain and flowering. straw and 45 days before harvest Do not apply more than 4 fl oz/A PropiMax EC for hay. per season if forage or hay will be harvested. Do not apply Tilt within 30 days of harvest for forage or hay. Do not apply more than 8 fl oz of product/A per season. Do not apply Tilt within 45 days of harvest. prothioconazole 5.0–5.7 fl oz/A Do not apply more than 9.37 fl Apply a minimum of 5 gal/A by air or oz/A/season. 10 gal/A ground. Proline Apply when the heads on the main stem are fully emerged (Feekes Do not apply within 32 days of growth stage 10.5). harvest. prothioconazole + 6.5–8.2 fl oz/A Do not apply more than 8.2 fl oz/A/ Apply a minimum of 5 gal/A by air or tebuconazole season. 10 gal/A ground. Apply when the heads on the main Prosaro 421 SC stem are fully emerged (Feekes Do not allow livestock to graze or For optimum disease control, use growth stages 10.5). feed green forage to livestock until a spray surfactant at the lowest 6 days after treatment. specified rate.

Do not apply within 30 days of Straw cut after harvest may be fed or harvest. used for bedding. tebuconazole 4 fl oz/A Do not apply more than 4 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. Embrace Apply when 50% of the heads on the main stem are emerged (Feekes Do not apply within 30 days of For optimum disease control, use Folicur growth stage 10.5). harvest. a spray surfactant at the lowest specified rate. Monsoon Do not allow livestock to graze or feed green forage to live-stock Straw cut after harvest may be fed or Onset 3.6L until 6 days after treatment. used for bedding.

Orius 3.6F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo *Copper and sulfur products are acceptable for organic production.

13 FOLIAR FUNGICIDES FOR OATS Disease Fungicide Dosage and Interval Limitations Special Notes Septoria leaf mancozeb Do not make more than three Use Latron CS-7 surfactant to diseases applications during the season. improve product performance. (S. avenae f.sp. Dithane M-45 2 lbs/A avenae) Do not apply after Feekes growth Mancozeb products are not Manzate Flowable 1.6 qts/A stage 10.5 or heading, and not less specifically labeled for stem rust, Crown (leaf) rust than 26 days before harvest. only for leaf rust. (Puccinia coronata) Penncozeb 4FL 0.8–1.6 qts/A Do not graze livestock in treated Low rates are intended for use at the Stem rust (Puccinia Penncozeb 75 DF 1–2 lbs/A areas prior to harvest. tillering stage when the crop canopy graminis f.sp. avenae) volume is relatively small. Penncozeb 80 WP 1–2 lbs/A Do not apply more than 4.8 Powdery mildew qts (Manzate Flowable), 6 lbs (Erysiphe graminis Start applications at disease onset (Penncozeb 80WP), or 6.4 lbs f.sp. avenae) or when crop is in the tillering to (Penncozeb 75DF) of product per jointing stage and repeat at 7–10 acre per season. day intervals. mancozeb + Do not make more than three Use Latron CS-7 surfactant to surfactant applications during the season. improve product performance.

Dithane DF 2 lbs/A Do not apply after Feekes growth Mancozeb products are not Rainshield stage 10.5 or heading, and not less specifically labeled for stem rust, than 26 days before harvest. only for leaf rust. Dithane F-45 1.6 qts/A Rainshield Do not graze livestock in Do not apply more than 6 lbs treated areas prior to harvest. (Dithane DF and Manzate Pro-Stick) Manzate Pro-Stick 2 lbs/A of product per acre per season.

Start applications at disease onset or when crop is in the tillering to jointing stage and repeat at 7–10 day intervals. metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Season. Caramba Apply prior to disease development. Do not apply within 30 days of harvest. Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 2–4 fl oz/A Do not apply PropiMax EC and Apply a minimum of 2 gal/A by air or Bumper within 30 days of harvest 10 gal/A ground. Tilt Apply up to Feekes growth stage for forage, 40 days before harvest 10.5 (heading) (PropiMax EC and for grain and straw and 45 days Do not apply more than 4 fl oz/A PropiMax EC Bumper). before harvest for hay. per season if forage or hay will be harvested. Bumper Do not apply Tilt within 30 days of harvest for forage or hay. Do not apply more than 8 fl oz of product/A per season. Do not apply Tilt within 45 days of harvest. Low rates are intended for use at the tillering stage when the crop canopy volume is relatively small. propiconazole + 7 fl oz/A Do not apply more than 2 Do not apply within 40 days of trifloxystrobin applications (14 fl oz/A) in a single harvest. Apply until the ligule of the flag leaf growing season. Allow at least 14 Stratego emerges (Feekes growth stage 9). days between applications. If 2 applications (14 fl oz/A) are applied, do not allow livestock to If one application (7 fl oz/A) is graze or harvest for forage or hay. applied, do not allow livestock to graze or feed for 30 days or harvest hay for 45 days after application. pyraclostrobin 6–9 fl oz/A Maximum of two applications. Apply no later than the beginning of flowering (Feekes 10.5). Headline 3-6 fl oz/A for early season control of Do not apply more than 18 fl oz/A Leaf blotch and Septoria blotch. per season.

Do not harvest oat or feed green- chopped oats within 14 days of last application. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season.

14 FOLIAR FUNGICIDES FOR RYE Disease Fungicide Dosage and Interval Limitations Special Notes Leaf rust mancozeb Do not make more than three Use Latron CS-7 surfactant to (Puccinia rubigo-vera applications during the season. improve product performance. f.sp. secalis) Dithane M-45 2 lbs/A Do not apply after Feekes growth Mancozeb products are not Septoria leaf Manzate Flowable 1.6 qts/A stage 10.5 or heading, and not less specifically labeled for stripe rust or diseases than 26 days before harvest. stem rust, only for leaf rust. (S. nodorum and S. Penncozeb 4FL 0.8–1.6 qts/A tritici) Do not graze livestock in treated Low rates are intended for use at the Penncozeb 75 DF 1–2 lbs/A areas prior to harvest. tillering stage when the crop canopy Glume blotch volume is relatively small. (S. nodorum) Penncozeb 80 WP 1–2 lbs/A Do not apply more than 4.8 qts (Manzate Flowable), 6 lbs Powdery mildew Start applications at disease onset (Penncozeb 80WP), or 6.4 lbs (Erysiphe graminis or when crop is in the tillering to (Penncozeb 75DF) of product per f.sp. secalis) jointing stage and repeat at 7–10 acre per season. day intervals. Spot blotch (Helminothosporium mancozeb + Do not make more than three Use Latron CS-7 surfactant to sativum) surfactant applications during the season. improve product performance.

Tan spot Dithane DF 2 lbs/A Do not apply after Feekes growth Mancozeb products are not (Pyrenophora tritici– Rainshield stage 10.5 or heading, and not less specifically labeled for stripe rust or repentis) than 26 days before harvest. stem rust, only for leaf rust. Dithane F-45 1.6 qts/A Rainshield Do not graze livestock in treated Do not apply more than 6 lbs of areas prior to harvest. (Dithane DF and Manzate Pro-Stick) Manzate Pro-Stick 2 lbs/A of product per acre per season.

Start applications at disease onset or when crop is in the tillering to jointing stage and repeat at 7–10 day intervals. metconazole 10–14 fl oz/A Maximum of two applications. Do not apply more than 34 fl oz/A/ Season. Caramba Apply prior to disease development. Do not apply within 30 days of harvest. Apply immediately after flag leaf emergence (Feekes growth stage 9) for optimum results. propiconazole 2-4 fl oz/A Do not apply PropiMax EC and Apply a minimum of 2 gal/A by air or Bumper within 30 days of harvest 10 gal/A ground. Tilt Apply up to Feekes growth stage for forage, 40 days before harvest 10.5 (heading) (PropiMax EC and for grain and straw and 45 days Do not apply more than 4 fl oz/A PropiMax EC Bumper). before harvest for hay. per season if forage or hay will be harvested. Bumper Do not apply Tilt within 30 days of harvest for forage or hay. Do not apply more than 8 fl oz of product/A per season. Do not apply Tilt within 45 days of harvest. pyraclostrobin 6–9 fl oz/A Maximum of two applications. Apply no later than 50% head emergence (Feekes growth stage Headline 3-6 fl oz/A for early season control of Do not apply more than 18 fl oz/A 10.3). Septoria leaf and glume blotch. per season. pyraclostrobin + 7–9 fl oz/A Maximum of two applications. Apply no later than the beginning of metconazole flowering (Feekes 10.5). Use the higher rate and shorter The minimum retreatment TwinLine interval when disease pressure is interval is 6–8 days after the first Do not apply more than 18 fl oz/A per high. application. season.

15 Small Grains Growth Stage chart Small Grains Growth Stage chart Feekes Scale Description Feekes Scale Description 1 First leaf through coleoptile 10.2 1/4 of inflorescence emerged 2 Main shoot and 1 tiller 10.3 1/2 of inflorescence emerged 3 Main shoot and 6 tillers 10.4 3/4 of inflorescence emerged 4–5 Pseudo stem erection 10.5 Emergence of inflorescence completed 6 1st node detectable 10.51 Beginning of anthesis 7 2nd node detectable 10.54 Kernel is watery ripe 8 Flag leaf just visible 11.1 Medium milk 9 Flag leaf collar just visible 11.2 Soft dough 10 Boots just swollen 11.3 Kernel is hard (difficult to divide by thumbnail) 10.1 First awns visible 11.4 Kernel is hard (can no longer be dented by thumbnail)

FOLIAR FUNGICIDES FOR GRASSES GROWN for SEED Disease Fungicide Dosage and Interval Limitations Special Notes Rust azoxystrobin 6.2-15.4 fl oz/A Do not apply within 8 days of Abound may be applied by ground, air (Puccinia graminis harvest. or chemigation. Puccinia triticina) Abound Begin applications prior to disease development and repeat every 10-14 Do not apply more than two An adjuvant may be added at specific Powdery mildew days. sequential applications without rates. (Erysiphe graminis) alternating with another fungicide chemistry.

Do not apply more than 49 fl oz of product per acre per season. pyraclostrobin 6–12 fl oz/A Maximum of two applications. 27 day PHI for hay or grazing.

Headline Begin applications prior to disease Do not apply more than 24 fl oz/A 14 day PHI for harvest. development and reapply in 14–21 per season. days. tebuconazole 4 day preharvest interval. Use 20 gal/A for ground or 10 gal/A for air application (Folicur, Embrace, AmTide Tebu 3.6F 4–8 fl oz/A Do not forage, cut green chop or Monsoon, Onset, Orius 3.6F, Orius use seed for feed purposes. 20AQ, Solera Tebuconazole 3.6F, Folicur Begin applications for rust when Tebusha 3.6FL, TebuStar 3.6L, Tebuzol conditions are favorable or when the 3.6F and Toledo) or 10 gal/A ground Embrace first pustules are present and repeat or 20 gal/A air (AmTide Tebu 3.6F). every 14-16 days. Monsoon Do not apply more than 16 fl oz Begin applications when powdery (AmTide Tebu 3.6F, Folicur, Embrace, Onset 3.6L mildew first appears and repeat Monsoon, Onset, Orius 3.6F, Solera every 14–16 days. Tebuconazole 3.6F, Tebusha 3.6FL, Orius 3.6F TebuStar 3.6L, Tebuzol 3.6F and Under heavy disease pressure use Toledo) or 34.4 fl oz (Orius 20AQ) of Tebusha 3.6FL 6–8 fl oz/A and shorter intervals. product per acre per season.

TebuStar 3.6L A spray surfactant at the lowest minimum rate may be added to Tebuzol 3.6F optimize efficacy.

Toledo

Orius 20AQ 8.6-17.2 fl oz/A Under heavy pressure use 12.9-17.2 fl oz/A and shorter intervals.

Solera Tebuconazole 4-8 fl oz/A 3.6F

16 FOLIAR FUNGICIDES FOR GRASSES GROWN for SEED Disease Fungicide Dosage and Interval Limitations Special Notes Leaf rust chlorothalonil Do not apply within 14 days of Apply by ground, air or through harvest. chemigation. Stripe rust Bravo Ultrex 0.9–1.4 lbs/A Do not graze livestock in treated Use sufficient water to obtain Stem rust Bravo Weather Stik 1–1.5 pints/A areas. adequate coverage, 5-10 gal/A for concentrated ground and aerial Septoria leaf spot Echo 720 Do not feed treated plant parts to application. 1–1.5 pints/A livestock (Bravo Ultrex, Echo 720, Glume blotch Echo 90DF Echo 90DF, Echo ZN). Do not apply more than 6 pints (Bravo 0.88–1.25 lbs/A Weather Stik, Equus 720 SST), 5.4 Bipolaris and Echo ZN Feeding of treated plant parts lbs. (Bravo Ultrex, Equus DF), 8.5 pints Drechslera leaf 1.5-2 pints after harvest of seed is allowed (Equus 500 ZN), 4.5 lbs a.i. (Echo spots Equus 500 ZN for Bravo Weather Stik, Equus 500 90DF, Echo 720, Echo ZN) of product (various fungal 1.5-2.25 pints/A ZN, Equus 720 SST and Equus DF. per acre per season. species) Equus 720 SST 1.0–1.5 pints/A Equus DF 0.9–1.4 lbs/A

Begin applications at stem elongation and reapply at flag leaf emergence and repeat every 14 days thereafter. tebuconazole 4–8 fl oz/A 4 day preharvest interval. Use 20 gal/A for ground or 10 gal/A for air application (Folicur, Embrace, AmTide Tebu 3.6F Begin applications when conditions Do not forage, cut green chop or Monsoon, Onset, Orius 3.6F, Solera are favorable for disease and repeat use seed for feed purposes. Tebuconazole 3.6F, Tebusha 3.6FL, Folicur every 14–16 days. TebuStar 3.6L, Tebuzol 3.6F and Toledo) or 10 gal/A ground or 20 Embrace Under heavy disease pressure use gal/A air (AmTide Tebu 3.6F). 6–8 fl oz/A and shorter intervals. Monsoon Do not apply more than 16 oz of Onset 3.6L product per acre per season.

Orius 3.6F A spray surfactant at the lowest minimum rate may be added to Tebusha 3.6FL optimize efficacy.

TebuStar 3.6L

Tebuzol 3.6F

Toledo

Solera Tebuconazole 4-8 fl oz/A 3.6F

FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Gray leaf spot azoxystrobin Do not apply within 7 days of Use only in an integrated disease (Cercospora zeae harvest. management approach with resistant maydis) Quadris 6.2–9 fl oz/A hybrids, proper fertility, residue Do not apply more than two management and crop rotation. Amistar 3–5 oz/A sequential applications without alternating with another fungicide Quadris and Amistar may be Apply at the first sign of gray leaf chemistry. applied by ground, air or through spot symptoms. A second application chemigation. may be required 14 days later. Do not apply more than 2 applications of Quadris, or Amistar, Do not apply more than 123 fl oz of or other strobilurin fungicides per product/A (Quadris) or 2.0 lbs a.i./A year. (Amistar) per season. fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A applications. per season. Evito 480SC Apply before disease occurs and at a 7 day interval. Do not apply within 30 days of Evito 480SC may be applied by harvest. ground, air or chemigation.

Do not apply after the R4 growth stage.

17 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Gray leaf spot fluoxastrobin + 4-9 fl oz/A Do not apply more than 2 Evito T may be applied by ground, air (Cercospora zeae tebuconazole applications. or chemigation. maydis) Apply before disease occurs and at a Evito T 7 day interval. Do not apply after the R4 growth Apply a minimum of 3 gal/A by air or (Continued) stage. 10 gal/A ground.

Do not apply more than 18 fl oz/A Evito T may be applied up to 36 days per season. before harvest of grain or fodder. mancozeb Do not apply more than 12 qts Do not apply within 40 days of (Manzate Flowable and Penncozeb harvest. Manzate Flowable 1.2 qts/A 4FL), 15 lbs (Penncozeb 80WP), or 16 lbs (Penncozeb 75 DF) of Use Latron CS-7 surfactant to Penncozeb 4FL 0.8–1.2 qts/A product per acre per season. improve product performance.

Penncozeb 75 DF 1–1.5 lbs/A (repeat as needed) Do not feed treated forage to livestock. Penncozeb 80 WP 1–1.5 lbs/A (repeat as needed)

Start applications at disease onset and repeat at 4–7 day intervals. mancozeb + 1.5 lbs/A Do not apply more than 15 lbs of Do not apply within 40 days of surfactant product per acre per season. harvest. Start applications at disease onset Manzate Pro-Stick and repeat at 4–7 day intervals. Do not feed treated forage to livestock. propiconazole Do not apply within 30 days of Apply a minimum of 2 gal/A by air or 4 fl oz/A harvest for forage, grain and 10 gal/A ground. Tilt stover. Apply when disease first appears. Do not apply more than 8 fl oz/A/ PropiMax EC Do not apply more than 16 fl oz/A/ season on field corn harvested for If conditions favorable for disease season. forage. Bumper persist, reapply every 7–14 days. propiconazole + 10.5–14 fl oz/A Do not apply more than 2 Quilt, Quilt Xcel may be applied by azoxystrobin applications of Quilt, Quilt Xcel ground, air or chemigation. Apply when disease first appears. or other strobilurin fungicides per Quilt If conditions favorable for disease year. Do not apply more than 56 fl oz/A persists, reapply every 14 days. per season. Quilt Xcel Do not apply more than 28 fl oz/A for field corn harvested for forage. Do not apply within 30 days of harvest for forage, grain or stover. propiconazole + 10–12 fl oz/A Do not apply more than 24 fl oz/A Use higher rates and shorter trifloxystrobin of Stratego/year. intervals when disease pressure is Apply when disease first appears high. Stratego and at 7–14 day intervals, thereafter Do not apply within 30 days of if conditions continue to favor harvest for forage, grain and disease. stover. Do not apply more than 2 sequential applications of Stratego.

Do not apply more than 2 total applications of Stratego or other strobilurin fungicides. prothioconazole + 4-5 fl oz/A Do not apply more than 10 fl oz/A/ An adjuvant may be added at trifloxystrobin season. the lowest recommended rate to Apply when disease first appears enhance disease control. Stratego YLD and at 7-14 day intervals, if Do not apply within 14 days of conditions continue to favor disease. harvest for grain or fodder.

Use higher rates and shorter Forage may be harvested the same intervals when disease pressure is day as the application. severe. pyraclostrobin 6–12 fl oz/A Do not apply within 7 days of Adjuvants may be used with harvest. Headline. Headline Apply before diseases occur. Do not apply more than two Do not apply more than 72 fl oz/A If conditions favorable for disease applications of Headline without per season. persist, reapply every 7–14 days. alternating with a fungicide that has a different mode of action for Do not apply more than two Use the higher rate and shorter at least one application. sequential applications of Headline. intervals when disease pressure is high. Do not make more than 2 applications per year.

18 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Gray leaf spot pyraclostrobin + 10-14.4 fl oz/A Do not apply within 7 days of Do not apply more than 57.6 fl oz/A (Cercospora zeae metconazole harvest for field corn forage/silage. per season. maydis) Apply before diseases occur. Headline AMP Do not apply within 20 days of Do not apply more than two (Continued) If conditions favorable for disease harvest for grain. sequential applications of Headline persist, reapply every 7–14 days. AMP. Do not apply more than two Use the higher rate and shorter applications of Headline AMP Do not make more than 4 intervals when disease pressure is without alternating with a applications per year. high. fungicide that has a different mode of action for at least one application. tebuconazole 4–6 fl oz/A Do not apply more than 24 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. AmTide Tebu 3.6F Begin preventative applications when conditions favor disease Do not apply within 36 For optimum disease control, use Folicur development and repeat at a 7–14 days(AmTide Tebu 3.6F, Folicur, a spray surfactant at the lowest day interval if conditions remain Monsoon, Onset 3.6L, Orius 3.6F, specified rate. Monsoon favorable for disease development. Solera Tebuconazole 3.6F, Tebusha 3.6FL, TebuStar3.6L, Tebuzol3.6F) Onset 3.6L or 49 days (Toledo) of harvest of grain or fodder. Orius 3.6F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo Northern corn leaf azoxystrobin Do not apply within 7 days of Use only in an integrated disease blight harvest. management approach with resistant Quadris 6.2–9 fl oz/A hybrids, proper fertility, residue Northern corn leaf 3–5 oz/A Do not apply more than two management and crop rotation. spot Amistar sequential applications without Apply before diseases appear. alternating with another fungicide Quadris and Amistar may be applied Helminthosporium Repeat applications may be required chemistry. by ground, air or chemigation. diseases on a 7–14 days schedule. Do not apply more than 2 Do not apply more than 123 fl oz of Helminthosporium applications of Quadris, or Amistar, product/A (Quadris) or 2.0 lbs a.i./A leaf blights or other strobilurin fungicides per (Amistar) per season. year. (Helminthosporium maydis, H. carbonum, chlorothalonil Do not apply within 14 days of Apply by ground, air or chemigation. and H. turcicum) harvest. Bravo Ultrex 0.7–1.8 lbs/A Use sufficient water to obtain Do not apply to sweet corn to be adequate coverage, 5–10 gal/A Echo 720 1.5-2.0 pints/A processed. for concentrated ground and aerial application. Echo 90DF 1 1/4- 1 5/8 lbs/A Do not allow livestock to graze treated fields. Do not apply more than 10.9 lbs Echo ZN 1 1/8- 2 3/4 pints/A (Bravo Ultrex, Equus DF), 9.0 lbs a.i. Do not ensile treated corn or use (Echo 720, Echo 90DF, Echo ZN), 17 Equus 500 ZN 1.125-2.75 pints/A as livestock forage. pints (Equus 500 ZN), 12 pints (Equus 720 SST) of product per acre per Equus 720 SST 0.75-2 pints/A season.

Equus DF 0.7-1.8 lbs/A

Begin applications when conditions favor disease and repeat every 7 days.

Under severe disease conditions, use 1.4–1.8 lbs/A (Bravo Ultrex, Equus DF), 2.125-2.75 pints/A (Equus 500 ZN), 1.5-2 pints/A (Equus 720SST).

19 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Northern corn leaf chlorothalonil + 0.75–2 pints/A Do not apply within 14 days of Bravo Weather Stik may be blight surfactant harvest. applied by ground, air or through Begin applications when conditions chemigation. Northern corn leaf Bravo Weather Stik favor disease and repeat every 7 Do not apply to sweet corn to be spot days. processed. Use sufficient water to obtain adequate coverage, 5–10 gal/A Helminthosporium Under severe disease conditions use Do not allow livestock to graze for concentrated ground and aerial diseases 1.5–2 pints/A. treated fields. application.

Helminthosporium Do not ensile treated corn or use Do not apply more than 12 pints of leaf blights as livestock forage. product/A per season.

(Helminthosporium fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A maydis, H. carbonum, applications. per season. and H. turcicum) Evito 480SC Apply before disease occurs and at a 7 day interval. Do not apply within 30 days of Evito 480SC may be applied by (Continued) harvest. ground, air or chemigation.

Do not apply after the R4 growth stage. fluoxastrobin + 4-9 fl oz/A Do not apply more than 2 Evito T may be applied by ground, air tebuconazole applications. or chemigation. Apply before disease occurs and at a Evito T 7 day interval. Do not apply after the R4 growth Apply a minimum of 3 gal/A by air or stage. 10 gal/A ground.

Do not apply more than 18 fl oz/A Evito T may be applied up to 36 days per season. before harvest of grain or fodder. mancozeb Do not apply more than 12 qts Use Latron CS-7 surfactant to (Manzate Flowable and Penncozeb improve product performance. Dithane M-45 1.5 lbs/A (repeat at 4–14 days) 4FL), 15 lbs (Penncozeb 80WP), or 16 lbs (Penncozeb 75 DF, Dithane Manzate Flowable 1.2 qts/A M-45) of product per acre per season. Penncozeb 4FL 0.8–1.2 qts/A Do not apply within 40 days of Penncozeb 75 DF 1–1.5 lbs/A (repeat as needed) harvest.

Penncozeb 80 WP 1–1.5 lbs/A (repeat as needed) Do not feed treated forage to livestock. Start applications at disease onset and repeat at 4–7 day intervals. mancozeb + Do not apply within 40 days of Do not apply more than 15 lbs of surfactant harvest. Dithane DF Rainshield, 12 qts/A of Dithane F–45 Rainshield or 15 lbs Dithane DF 1.5 lbs/A Do not feed treated forage to of Manzate Pro-Stick during the Rainshield livestock. season.

Dithane F-45 1.2 qts/A Use Latron CS–7 surfactant to Rainshield improve product performance.

Manzate Pro-Stick 1.5 lbs/A

20 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Northern corn leaf propiconazole + Do not apply more than two Quilt, Quilt Xcel may be applied by blight azoxystrobin applications of Quilt, Quilt Xcel ground, air or chemigation. or other strobilurin fungicides per Northern corn leaf Quilt 7–14 fl oz/A year. Do not apply more than 56 fl oz/A spot per season. Quilt Xcel 10.5-14 fl oz/A Do not apply more than 28 fl oz/A Helminthosporium for field corn harvested for forage. Do not apply within 30 days of diseases Apply when disease first appears. harvest for forage, grain or stover. If conditions favorable for disease Helminthosporium persists, reapply every 7–14 days. leaf blights Increase rate as disease (Helminthosporium pressure increases. maydis, H. carbonum, and H. turcicum) propiconazole + 10–12 fl oz/A Do not apply more than 24 fl oz/A Use higher rates and shorter trifloxystrobin of Stratego/year. intervals when disease pressure is (Continued) Apply when disease first appears high. Stratego and at 7–14 day intervals, thereafter Do not apply within 30 days of if conditions continue to favor harvest for forage, grain and disease. stover.

Do not apply more than 2 sequential applications of Stratego.

Use higher rates and shorter Forage may be harvested the same intervals when disease pressure is day as the application. severe. pyraclostrobin 6–12 fl oz/A Do not apply more than 72 fl oz/A Adjuvants may be used with per season. Headline. Headline Apply prior to disease development and at 7–14 day intervals, thereafter Do not apply more than two Do not apply more than two if conditions continue to favor sequential applications of applications of Headline without disease. Headline. alternating with a fungicide that has a different mode of application for at Use higher rates (9–12 fl oz/A) and Do not apply within 7 days of least one application. shorter intervals when disease harvest. pressure is high. pyraclostrobin + 10-14.4 fl oz/A Do not apply within 7 days of Do not apply more than 57.6 fl oz/A metconazole harvest for field corn forage/silage. per season. Apply before diseases occur. Headline AMP Do not apply within 20 days of Do not apply more than two If conditions favorable for disease harvest for grain. sequential applications of Headline persist, reapply every 7–14 days. AMP. Do not apply more than two Use the higher rate and shorter applications of Headline AMP Do not make more than 4 intervals when disease pressure is without alternating with a applications per year. high. fungicide that has a different mode of action for at least one application.

21 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Northern corn leaf tebuconazole 4–6 fl oz/A Do not apply more than 24 fl oz/A/ Apply a minimum of 5 gal/A by air or blight season. 10 gal/A ground. AmTide Tebu 3.6F Begin preventative applications Northern corn leaf when conditions favor disease Do not apply within 36 For optimum disease control, use spot Folicur development and repeat at a 7–14 days(AmTide Tebu 3.6F, Folicur, a spray surfactant at the lowest day interval if conditions remain Monsoon, Onset 3.6L, Orius 3.6F, specified rate. Helminthosporium Monsoon favorable for disease development. Solera Tebuconazole 3.6F, TebuStar diseases 3.6 L, Tebuzol 3.6F) or 49 days Onset 3.6L (Toledo) of harvest of grain or Helminthosporium fodder. leaf blights Orius 3.6F

(Helminthosporium Solera maydis, H. carbonum, Tebuconazole 3.6F and H. turcicum) Tebusha 3.6FL (Continued) TebuStar 3.6L

Tebuzol 3.6F

Toledo Rust azoxystrobin Do not apply within 7 days of Use only in an integrated disease (Puccinia sorghi) harvest. management approach with resistant Quadris 6.2–9 fl oz/A hybrids, proper fertility, residue Do not apply more than two management and crop rotation. Amistar 2–3 oz/A sequential applications without alternating with another fungicide Quadris and Amistar may be applied Apply before diseases appear. chemistry. by ground, air or chemigation. Repeat applications may be required on a 7–14 days schedule. Do not apply more than 2 Do not apply more than 123 fl oz of applications of Quadris, or Amistar, product/A (Quadris) or 2.0 lbs a.i./A or other strobilurin fungicides per (Amistar) per season. year. chlorothalonil Do not apply within 14 days of Apply by ground, air or chemigation. harvest. Bravo Ultrex 0.7–1.8 lbs/A Use sufficient water to obtain Do not apply to sweet corn to be adequate coverage, 5–10 gal/A Echo 720 1.5-2.0 pints/A processed. for concentrated ground and aerial application. Echo 90DF 1 1/4- 1 5/8 lbs/A Do not allow livestock to graze treated fields. Do not apply more than 10.9 lbs Echo ZN 1 1/8- 2 3/4 pints/A (Bravo Ultrex, Equus DF), 9.0 lbs a.i. Do not ensile treated corn or use (Echo 720, Echo 90DF, Echo ZN), 17 Equus 500 ZN 1.125-2.75 pints/A as livestock forage. pints (Equus 500 ZN), 12 pints (Equus 720 SST) of product per acre per Equus 720 SST 0.75-2 pints/A season.

Equus DF 0.7-1.8 lbs/A

Begin applications when conditions favor disease and repeat every 7 days.

Under severe disease conditions, use 1.4–1.8 lbs/A (Bravo Ultrex, Equus DF), 2.125-2.75 pints/A (Equus 500 ZN), 1.5-2 pints/A (Equus 720SST). chlorothalonil + 0.75–2 pints/A Do not apply within 14 days of Bravo Weather Stik may be surfactant harvest. applied by ground, air or through Begin applications when conditions chemigation. Bravo Weather Stik favor disease and repeat every 7 Do not apply to sweet corn to be days. processed. Use sufficient water to obtain adequate coverage, 5–10 gal/A Under severe disease conditions use Do not allow livestock to graze for concentrated ground and aerial 1.5–2 pints/A. treated fields. application.

Do not ensile treated corn or use Do not apply more than 12 pints/A as livestock feed. per season. fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A applications. per season. Evito 480SC Apply before disease occurs and at a 7 day interval. Do not apply within 30 days of Evito 480SC may be applied by harvest. ground, air or chemigation.

Do not apply after the R4 growth stage. 22 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Rust fluoxastrobin + 4-9 fl oz/A Do not apply more than 2 Evito T may be applied by ground, air (Puccinia sorghi) tebuconazole applications. or chemigation. Apply before disease occurs and at a (Continued) Evito T 7 day interval. Do not apply after the R4 growth Apply a minimum of 3 gal/A by air or stage. 10 gal/A ground.

Penncozeb 80 WP 1–1.5 lbs/A (repeat as needed) Do not feed treated forage to livestock. Start applications at disease onset and repeat at 4–7 day intervals. mancozeb + Do not apply within 40 days of Do not apply more than 15 pounds surfactant harvest. of Dithane Rainshield, 12 qts/A of Dithane F-45 Rainshield or 15 lbs Dithane DF 1.5 lbs/A Do not feed treated forage to of Manzate Pro-Stick during the Rainshield livestock. season.

Dithane F-45 1.2 qts/A Use Latron CS-7 surfactant to Rainshield improve product performance.

Manzate Pro-Stick 1.5 lbs/A

Start applications at disease onset and repeat at 4–14 day intervals for Dithane F-45 Rainshield or 4–7 day intervals for Dithane DF Rainshield and Manzate Pro-Stick. propiconazole 4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or harvest for forage, grain and 10 gal/A ground. Tilt Apply when disease first appears. stover. Do not apply more than 8 fl oz/A/ PropiMax EC If conditions favorable for disease Do not apply more than 16 fl oz/A/ season on field corn harvested for persist, reapply every 7–14 days. season. forage. Bumper propiconazole + 10.5–14 fl oz/A Do not apply more than two Quilt, Quilt Xcel may be applied by azoxystrobin applications of Quilt, Quilt Xcel ground, air or chemigation. Apply when disease first appears. or other strobilurin fungicides per Quilt year. Do not apply more than 56 fl oz/A If conditions favorable for disease per season. Quilt Xcel persists, reapply every 14 days. Do not apply more than 28 fl oz/A for field corn harvested for forage. Do not apply within 30 days of harvest for forage, grain or stover. propiconazole + 10-12 fl oz/A Do not apply more than 24 fl oz/A Do not apply more than 2 total trifloxystrobin of Stratego/year. applications of Stratego or other Apply when disease first appears strobilurin fungicides. Stratego and at 7–14 day intervals, thereafter Do not apply within 30 days of if conditions continue to favor harvest for forage, grain and disease. stover.

Use higher rates and shorter Do not apply more than 2 intervals when disease pressure is sequential applications of high. Stratego.

prothioconazole + 4-5 fl oz/A Do not apply more than 10 fl oz/A/ An adjuvant may be added at trifloxystrobin season. the lowest recommended rate to Apply when disease first appears enhance disease control. Stratego YLD and at 7-14 day intervals, if Do not apply within 14 days of conditions continue to favor disease. harvest for grain or fodder.

Use higher rates and shorter Forage may be harvested the same intervals when disease pressure is day as the application. severe.

23 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Rust pyraclostrobin 6–12 fl oz/A Do not apply within 7 days of Adjuvants may be used with (Puccinia sorghi) harvest. Headline. Headline Apply before disease occur. (Continued) Do not apply more than two Do not apply more than 72 fl oz/A If conditions favorable for disease applications of Headline without per season. persist, reapply every 7–14 days. alternating with a fungicide that has a different mode of action for Do not apply more than two Use the higher rate and shorter at least one application. sequential applications of Headline. intervals when disease pressure is high. pyraclostrobin + 10-14.4 fl oz/A Do not apply within 7 days of Do not apply more than 57.6 fl oz/A metconazole harvest for field corn forage/silage. per season. Apply before diseases occur. Headline AMP Do not apply within 20 days of Do not apply more than two If conditions favorable for disease harvest for grain. sequential applications of Headline persist, reapply every 7–14 days. AMP. Do not apply more than two Use the higher rate and shorter applications of Headline AMP Do not make more than 4 intervals when disease pressure is without alternating with a applications per year. high. fungicide that has a different mode of action for at least one application.

tebuconazole 4–6 fl oz/A Do not apply more than 24 fl oz/A/ Apply a minimum of 5 gal/A by air or season. 10 gal/A ground. AmTide Tebu 3.6F Begin preventative applications when conditions favor disease Do not apply within 36 For optimum disease control, use Folicur development and repeat at a 7–14 days(AmTide Tebu 3.6F, Folicur, a spray surfactant at the lowest day interval if conditions remain Monsoon, Onset 3.6L, Orius 3.6F, specified rate. Monsoon favorable for disease development. Solera Tebuconazole 3.6F, Tebusha 3.6FL, TebuStar 3.6L, Tebuzol 3.6F) Onset 3.6L or 49 days (Toledo) of harvest of grain or fodder. Orius 3.6F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo Eyespot azoxystrobin Do not apply within 7 days of Quadris and Amistar may be applied (Aureobasidium zeae) harvest. by ground, air or chemigation. Quadris 6.2-9 fl oz/A Do not apply more than two Do not apply more than 123 fl oz of Amistar 3–5 oz/A applications of strobilurin product/A (Quadris) or 2.0 lbs a.i./A fungicides per year without (Amistar) per season. Apply prior to disease development alternating with a fungicide that and at 7–14 day intervals, thereafter has a different mode of action. Do not apply more than 2 total if conditions continue to favor applications of Quadris, or Amistar, disease. or other strobilurin fungicides. fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A applications. per season. Evito 480SC Apply before disease occurs and at a 7 day interval. Do not apply within 30 days of Evito 480SC may be applied by harvest. ground, air or chemigation.

Do not apply more than 18 fl oz/A Evito T may be applied up to 36 days per season. before harvest of grain or fodder.

24 FOLIAR FUNGICIDES FOR CORN Disease Fungicide Dosage and Interval Limitations Special Notes Eyespot propiconazole 4 fl oz/A Do not apply within 30 days of Apply a minimum of 2 gal/A by air or (Aureobasidium zeae) harvest for forage, grain and 10 gal/A ground. Tilt Apply when disease first appears. stover. (Continued) Do not apply more than 8 fl oz/A/ PropiMax EC If conditions favorable for disease Do not apply more than 16 fl oz/A/ season on field corn harvested for persist, reapply every 7-14 days. season. forage. Bumper propiconazole + 10.5–14 fl oz/A Do not apply more than two Quilt, Quilt Xcel may be applied by azoxystrobin applications of Quilt, Quilt Xcel ground, air or chemigation. Apply when disease first appears. or other strobilurin fungicides per Quilt If conditions favorable for disease year. Do not apply more than 56 fl oz/A persists, reapply every 14 days. per season. Quilt Xcel Do not apply more than 28 fl oz/A for field corn harvested for forage. Do not apply within 30 days of harvest for forage, grain or stover. propiconazole + 10–12 fl oz/A Do not apply more than 24 fl oz/A Use higher rates and shorter trifloxystrobin of Stratego/year. intervals when disease pressure is Apply when disease first appears high. Stratego and at 7–14 day intervals, thereafter Do not apply within 30 days of if conditions continue to favor harvest for forage, grain and disease. stover.

5-10 fl oz/A rate applied for early Do not apply more than 2 season disease control at growth sequential applications of stages V4-V6. Stratego.

Use higher rates and shorter Forage may be harvested the same intervals when disease pressure is day as the application. severe. pyraclostrobin + 10-14.4 fl oz/A Do not apply within 7 days of Do not apply more than 57.6 fl oz/A metconazole harvest for field corn forage/silage. per season. Apply before diseases occur. Headline AMP Do not apply within 20 days of Do not apply more than two If conditions favorable for disease harvest for grain. sequential applications of Headline persist, reapply every 7–14 days. AMP. Do not apply more than two Use the higher rate and shorter applications of Headline AMP Do not make more than 4 intervals when disease pressure is without alternating with a applications per year. high. fungicide that has a different mode of action for at least one application.

Corn Growth Stage Chart Growth Stage Description VE Emergence V1 One leaf with collar visible V2 Two leaves with collar visible V(n) (n) leaves with collar visible VT Tasseling R1 Silking R2 Blister R3 Milk R4 Dough R5 Dent R6 Maturity

25 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Brown Spot azoxystrobin 6.2-15.4 fl oz/A Do not apply within 14 days of Use only in an integrated disease (Septoria glycines) harvest. management approach with resistant Quadris Apply prior to disease development. hybrids, proper fertility, residue Pod and stem blight Do not apply more than two management and crop rotation. (Diaporthe Use the high rates under conditions sequential applications of Quadris phaseolorum) favorable for severe disease without alternating with another Quadris may be applied by ground, pressure or dense plant canopies. fungicide chemistry. air or through chemigation.

Do not apply more than 92.3 fl oz An adjuvant may be added at of product/A per season. recommended rates. azoxystrobin + 5.0–6.8 fl oz/A Do not apply within 30 days of Quadris Xtra may be applied by cyproconazole harvest. ground, air or through chemigation.

Quadris Xtra Apply prior to disease development. Do not apply more than two An adjuvant may be added at strobilurin applications per season. recommended rates. Use the high rates under conditions favorable for severe disease Do not apply more than 13.6 fl oz Do not use soybean forage or hay pressure or dense plant canopies or of product/A per season. as livestock feed if more than one when disease is present. application at 6.8 fl oz/A has been applied. azoxystrobin + Do not apply within 21 days of Quilt, Quilt Xcel may be applied by propiconazole harvest for seed and 0 days for ground, air or through chemigation. forage and hay(Quilt). Quilt 20.5 fl oz/A Do not apply more than 42 fl oz of Quilt Xcel can be applied up to R6 product/A per season. Quilt Xcel 14-21 fl oz/A (full seed).

Apply at R3 (early pod set when pods are 1/8–1/4 inch long) and 14–21 days later at R5 (pod fill). boscalid 5.5 oz/A (Suppression only) Do not apply within 21 days of Do not apply more than two harvest. applications per season. Endura Apply prior to disease development or when conditions are favorable for Do not apply more than 22 oz of disease development. product/A per season.

Repeat applications on a 7–14 day interval if conditions are favorable.

Use shorter intervals when disease pressure is high. chlorothalonil Do not apply within 6 weeks of Use sufficient water to obtain harvest. adequate coverage, 5–10 gal/A Bravo Ultrex 1.4–2.2 lbs/A for concentrated ground and aerial Do not apply more than 5.4 lbs application. Bravo Weather Stik 1.5–2.25 pints/A (Bravo Ultrex, Equus DF), 4.5 lbs a.i. ( Echo 720, Echo 90DF, Echo Do not feed soybean hay or Echo 720 1.5–2.5 pints/A ZN), 8.5 pints (Equus 500 ZN), 6 threshings from treated fields to pints (Bravo Weather Stik, Equus livestock. Echo 90DF 1.25–2 lbs/A 720 SST) of product per acre per season. Echo ZN 2-3.5 pints/A

Equus 500 ZN 2.25-3.25 pints/A

Equus 720 SST 1.5–2.5 pints/A

Equus DF 1.4–2.1 lbs/A

Make the first application when the largest pods are 1–1 1/4 inches in length. Make the second application 14 days later. cyproconazole 4.0–5.5 fl oz/A Do not apply within 30 days of Alto may be applied by ground, air or harvest. through chemigation. Alto 100SL Apply prior to disease development. Do not apply more than 11 fl oz/A A spreading/penetrator type adjuvant Use the high rates under conditions per season. is recommended for enhanced favorable for severe disease coverage and efficacy. pressure or dense plant canopies. Do not use soybean forage or hay as livestock feed if more than one application at 5.5 fl oz/A has been applied.

26 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Brown Spot fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A (Septoria glycines) applications. per season. Evito 480SC Apply prior to disease development Pod and stem blight and repeat on a 14-21 day interval if Do not apply within 3 days of Evito 480SC may be applied by (Diaporthe conditions are favorable. forage harvest or 30 days of seed ground, air or chemigation. phaseolorum) harvest.

(Continued) Do not apply after the R5 growth stage. fluoxastrobin + 4-6 fl oz/A For optimum disease control, apply Do not apply more than 12 fl oz/A per tebuconazole at the R3 growth stage. season. Apply prior to disease development Evito T and repeat on a 14-21 day interval if Do not apply more than 2 Evito T may be applied by ground, air conditions are favorable. applications. or chemigation.

Do not apply within 21 days of Apply a minimum of 3 gal/A by air or forage harvest or 30 days of seed 10 gal/A ground. harvest. propiconazole 6 fl oz/A Apply up to growth stage R6 (full Tilt and Bumper may be applied by seed). ground or aerial application. Tilt Apply at growth stage R3 (early pod set when pods are 1/8–1/4 inch Do not apply more than 12 fl oz/A Apply a minimum of 2 gal/A by air or Bumper long) and 14–21 days later at growth per season. 10 gal/A ground. stage R5 (pod fill). propiconazole + 10 fl oz/A Do not apply within 21 days of Stratego may be applied by ground, trifloxystrobin harvest. air or chemigation. Appy at early flowering or prior to Stratego disease development whichever is Do not apply more than 3 Do not apply more than 2 sequential earlier. applications per season. applications of Statego.

Repeat applications on a 10–21 day Do not apply more than 30 fl oz/A An adjuvant may be added at the interval if conditions are favorable. per season. lowest recommended rate to enhance disease control. Use shorter spray intervals when disease pressure is severe. prothioconazole + 4-4.65 fl oz/A Do not apply within 21 days of Do not graze or feed soybean forage trifloxystrobin harvest. or hay. Apply at early flowering or prior to Stratego YLD disease development, whichever is Do not apply more than 3 earlier. applications per season.

Repeat applications on a 10-21 day Do not apply more than 13.95 fl interval, if conditions are favorable. oz/A/season.

Use higher rates and shorter intervals when disease pressure is severe. pyraclostrobin 6–12 fl oz/A Do not apply within 21 days of Stratego may be applied by ground, harvest. air or chemigation. Headline Apply before diseases occur. If conditions favorable for disease Do not apply more than two Do not apply more than 2 sequential persist, reapply every 7–14 days. applications of Headline without applications of Headline. alternating with a fungicide that Use the higher rate and shorter has a different mode of action for An adjuvant may be added at intervals when disease pressure is at least one application. the lowest recommended rate to high. enhance disease control. tetraconazole 4–5 fl oz/A (Brown Spot) Do not apply after growth stage R5 Use as a part of an integrated (beginning seed). disease management approach with Domark Apply at growth stage R3 (early resistant hybrids, proper fertility, pod stage) or when conditions are Do not make more than 2 residue management and crop favorable for disease. applications per season. rotation.

Repeat applications on a 15–21 day Do not apply more than 10 fl oz/A Apply a minimum of 5 gal/A by air or interval if disease pressure is severe. per season. 10–25 gal/A ground.

Use the higher rate and shorter Do not graze or feed soybean forage intervals when disease pressure is or hay to livestock. high.

27 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Brown Spot thiophanate- PHI- 21 days (Topsin 4.5 FL, Apply a minimum of 5 gal/A by air (Septoria glycines) methyl T-Methyl 70W WSB) (Topsin 4.5 FL, Topsin M 70 WDG, Topsin M WSB). Pod and stem blight Topsin 4.5 FL 10–20 fl oz/A Do not apply more than 40 fl oz (Diaporthe (Topsin 4.5 FL), 2 lbs (Topsin M Apply a minimum of 5 gal/A ground phaseolorum) Topsin M 70 WDG 1/2–1 lbs/A 70 WDG, Topsin M 70WP, Topsin (T-Methyl 70W WSB) and increase M WSB, T-Methyl 70W WSB) of the volume as crop canopies (Continued) Topsin M 70WP 1/2–1 lbs/A product/A/season. increase.

Topsin M WSB 1/2–1 lbs/A Do not graze or feed treated vines or hay to livestock. T-Methyl 70W WSB 1/2- 1 lbs/A

Apply from full bloom to when pods are 1/8–1/4 inch in length. Make a second application 14–21 days later. Do not make the second application after pods have reached 1/4” in length or when beans form in the pod.

Use the high rate under severe disease pressure. Powdery Mildew propiconazole + 10 fl oz/A Do not apply within 21 days of Stratego may be applied by ground, (Microsphaera diffusa) trifloxystrobin harvest. air or chemigation. Appy at early flowering or prior to Stratego disease development whichever is Do not apply more than 3 Do not apply more than 2 sequential earlier. applications per season. applications of Statego.

Repeat applications on a 10–21 day Do not apply more than 30 fl oz/A An adjuvant may be added at interval if conditions are favorable. per season. the lowest recommended rate to enhance disease control. Use shorter spray intervals when disease pressure is severe. prothioconazole + 4-4.65 fl oz/A Do not apply within 21 days of Do not graze or feed soybean forage trifloxystrobin harvest. or hay. Apply at early flowering or prior to Stratego YLD disease development, whichever is Do not apply more than 3 earlier. applications per season.

Repeat applications on a 10-21 day Do not apply more than 13.95 fl interval, if conditions are favorable. oz/A/season.

Use higher rates and shorter intervals when disease pressure is severe. prothioconazole 2.5–3.0 fl oz/A Do not apply within 21 days of Apply a minimum of 2 gal/A by air or harvest. 10 gal/A by ground. Proline Apply as a preventative spray or at the first signs of disease. Do not apply more than 3 applications per season. Repeat applications on a 10–21 day interval if conditions are favorable. Do not apply more than 9 fl oz/A per season. Use higher rates and shorter intervals when disease pressure is severe.

28 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Powdery Mildew tebuconazole 3–4 fl oz/A Do not apply within 21 days of Apply a minimum of 5 gal/A by air or (Microsphaera diffusa) harvest. 10 gal/A by ground. AmTide Tebu 3.6F Apply as a preventive spray or at first (Continued) visible signs of disease. Do not apply more than 3 The lowest label recommended rate Folicur applications per season. of surfactant must be added. Repeat applications on a 10–14 day Monsoon interval when disease pressure is Do not apply more than 12 fl oz/A severe. per season. Onset 3.6L

Orius 3.6 F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo tetraconazole 4–5 fl oz/A Do not apply after growth stage R5 Use as a part of an integrated (beginning seed). disease management approach with Domark Apply at growth stage R3 (early resistant hybrids, proper fertility, pod stage) or when conditions are Do not make more than 2 residue anagement and crop rotation. favorable for disease. applications per season. Apply a minimum of 5 gal/A by air or Repeat applications on a 15–21 day Do not apply more than 10 fl oz/A 10–25 gal/A ground. interval if disease pressure is severe. per season. Do not graze or feed soybean forage Use the higher rate and shorter or hay to livestock. intervals when disease pressure is high. Rust azoxystrobin 6.2–15.4 fl oz/A Do not apply within 14 days of Use only in an integrated disease (Phakopsora spp.) harvest. management approach with resistant Quadris Apply prior to disease development. hybrids, proper fertility, residue Do not apply more than two management and crop rotation. Use the high rates under conditions sequential applications of Quadris favorable for severe disease without alternating with another Quadris may be applied by ground, pressure or dense plant canopies. fungicide chemistry. air or through chemigation.

Do not apply more than 92.3 fl oz An adjuvant may be added at of product/A per season. recommended rates. azoxystrobin + 4.0–6.8 fl oz/A Do not apply within 30 days of Quadris Xtra may be applied by cyproconazole harvest. ground, air or through chemigation. Apply at R1 (beginning flowering) Quadris Xtra up to the R6 (seed development) Do not apply more than two Addition of an additive with stage but could be applied earlier if strobilurin applications per season. spreading and penetrating qualities conditions warrant. will enhance coverage and efficacy. Do not apply more than 13.6 fl oz Repeat at a 14–28 day interval of product/A per season. Do not use soybean forage or hay if conditions persist for rust as livestock feed if more than one development. application at 6.8 fl oz/A has been applied. azoxystrobin + Do not apply within 21 days of Quilt, Quilt Xcel may be applied by propiconazole harvest for seed and 0 days for ground, air or through chemigation. forage and hay (Quilt). Quilt 14–20.5 fl oz/A Quilt Xcel can be applied up to R6 Quilt Xcel 14-21 fl oz/A (full seed).

Apply at first sign of disease in the Do not apply more than 42 fl oz of area. product/A per season.

Repeat at a 14–21 day interval. Use higher rate and shorter interval when disease is present in the field and incidence is less than 2%.

29 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Rust chlorothalonil Do not apply within 6 weeks of Use sufficient water to obtain (Phakopsora spp.) harvest. adequate coverage, 5–10 gal/A Bravo Ultrex 1.4–2.2 lbs/A for concentrated ground and aerial (Continued) Do not apply more than 5.4 lbs application. Bravo Weather Stik 1.5–2.25 pints/A (Bravo Ultrex, Equus DF), 4.5 lbs a.i.( Echo 90DF, Echo 720, Echo Do not feed soybean hay or Echo 720 1.5–2.5 pints/A ZN), 6 pints (Bravo Weather Stik, threshings from treated fields to Equus 720 SST), 8.5 pints (Equus livestock. Echo 90DF 1.25–2 lbs/A 500 ZN) of product per acre per season. Echo ZN 2-3.5 pints/A

Equus 500 ZN 2.25-3.25 pints/A

Equus 720 SST 1.5-2.5 pints/A

Equus DF 1.4-2.1 lbs/A

Make the first application when the largest pods are 1–1 1/4 inches in length. Make the second application 14 days later. cyproconazole 2.75–5.5 fl oz/A Do not apply within 30 days of Alto may be applied by ground, air or harvest. through chemigation. Alto 100SL Apply at R1 (beginning flowering) up to the R6 (seed development) Do not apply more than 11 fl oz/A A spreading/penetrator type adjuvant stage but could be applied earlier if per season. is recommended for enhanced conditions warrant. coverage and efficacy.

Use the 2.75 fl oz/A when disease is Do not use soybean forage or hay present in the vegetative state. as livestock feed if more than one application at 5.5 fl oz/A has been Repeat at a 14–28 day interval applied. if conditions persist for rust development. fluoxastrobin 2.0-5.7 fl oz/A Do not apply more than 2 Do not apply more than 11.4 fl oz/A applications. per season. Evito 480SC Apply prior to disease development and repeat on a 14-21 day interval if Do not apply within 3 days of Evito 480SC may be applied by conditions are favorable. forage harvest or 30 days of seed ground, air or chemigation. harvest. Evito 480SC may be used with a Do not apply after the R5 growth registered triazole fungicide to stage. increase efficacy. fluoxastrobin + 4-6 fl oz/A For optimum disease control, apply Do not apply more than 12 fl oz/A per tebuconazole at the R3 growth stage. season. Apply prior to disease development Evito T and repeat on a 14-21 day interval if Do not apply more than 2 Evito T may be applied by ground, air conditions are favorable. applications. or chemigation.

Do not apply within 21 days of Apply a minimum of 3 gal/A by air or forage harvest or 30 days of seed 10 gal/A ground. harvest. myclobutanil Do not apply within 28 days of Do not make more than two harvest. applications per year. Laredo EC 4–8 fl oz/A Do not apply more than 16 fl oz Apply a minimum of 5 gal/A by air. Laredo EW 4.8–9.6 fl oz/A (Laredo EC), 19.2 fl oz (Laredo EW) of of product per acre per season. Use sufficient water to obtain Apply prior to or at first sign adequate coverage for ground of disease and make repeat application. applications at a 10–14 day interval.

Use the higher rate when disease is established. propiconazole 4–6 fl oz/A Apply up to growth stage R6 (full Tilt may be applied by ground or seed). aerial application. Tilt Apply at first sign of disease in the area. Repeat at a 14–21 day interval. Do not apply more than 12 fl oz/A Apply a minimum of 2 gal/A by air or Bumper Use higher rate and shorter interval per season. 10 gal/A ground. when disease is present in the field and incidence is less than 2%.

30 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Rust propiconazole + 7-10 fl oz/A Do not apply within 21 days of Stratego may be applied by ground, (Phakopsora spp.) trifloxystrobin harvest. air or chemigation. Apply at early flowering or prior to (Continued) Stratego disease development whichever is Do not apply more than 3 Do not apply more than 2 sequential earlier. applications per season. applications of Statego.

Repeat applications on a 10–21 day Do not apply more than 30 fl oz/A interval if conditions are favorable. per season.

Use higher rates and shorter spray intervals when disease pressure is severe. propiconazole + 10 fl oz/A (Stratego) + 1 fl oz/A Do not apply within 21 days of Stratego + Proline may be applied by trifloxystrobin + (Proline) harvest. ground or air. prothioconazole Apply at early flowering or prior to Stratego + Proline disease development whichever is earlier.

Repeat applications on a 10–21 day interval if conditions are favorable.

Use shorter spray intervals when disease pressure is severe. prothioconazole 2.5–3.0 fl oz/A Do not apply within 21 days of Apply a minimum of 2 gal/A by air or harvest. 10 gal/A by ground. Proline Apply as a preventative spray or at the first signs of disease. Do not apply more than 3 applications per season. Repeat applications on a 10–21 day interval if conditions are favorable. Do not apply more than 9 fl oz/A per season. Use higher rates and shorter intervals when disease pressure is severe. prothioconazole + 4-4.65 fl oz/A Do not apply within 21 days of Do not graze or feed soybean forage trifloxystrobin harvest. or hay. Apply at early flowering or prior to Stratego YLD disease development, whichever is Do not apply more than 3 earlier. applications per season.

Repeat applications on a 10-21 day Do not apply more than 13.95 fl interval, if conditions are favorable. oz/A/season.

Use higher rates and shorter intervals when disease pressure is severe. pyraclostrobin 6–9 fl oz/A Do not apply within 21 days of Adjuvants may be used with harvest. Headline. Headline Apply soon after first sign of rust infection, preventively, or at growth Do not apply more than two Do not apply more than 24 fl oz/A per stage R1 to R3. Reapply at 21 days applications of Headline without season. after application or earlier (no sooner alternating with a fungicide that than 7 days) if monitoring shows has a different mode of action for active disease. at least one application.

Higher labled rates provide longer residual control.

31 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes Rust tebuconazole 3–4 fl oz/A Do not apply within 21 days of Apply a minimum of 5 gal/A by air or (Phakopsora spp.) harvest. 10 gal/A by ground. AmTide Tebu 3.6F Apply as a preventive spray or at first (Continued) visible signs of disease. Do not apply more than 3 The lowest label recommended rate Folicur applications per season. of surfactant must be added. Repeat applications on a 10–14 day Monsoon interval when disease pressure is Do not apply more than 12 fl oz/A severe. per season. Onset 3.6L

Orius 3.6F

Solera Tebuconazole 3.6F

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo tebuconazole + 2 fl oz/A (Folicur) + 10 fl oz/A Do not apply within 21 days of Folicur + Stratego may be applied by propiconazole + (Stratego) harvest. ground or air . trifloxystrobin Apply as a preventive spray or at first Do not apply more than 3 Folicur + Stratego visible signs of disease. applications per season.

Repeat applications on a 10–21 day Do not apply more than 12 fl oz/A interval if conditions are favorable. (Folicur) and 30 fl oz/A (Stratego) per season. tetraconazole 4–5 fl oz/A Do not apply after growth stage R5 Use as a part of an integrated (beginning seed). disease management approach with Domark Apply prior to disease development resistant hybrids, proper fertility, when rust infections are likely to Do not make more than 2 residue management and crop occur. applications per season. rotation.

If necessary, repeat with a second Do not apply more than 10 fl oz/A Use sufficient water to obtain application before growth stage R6. per season. adequate coverage, a minimum of 5 gal/A for aerial and 10–25 gal/A for ground application.

Do not graze or feed soybean forage or hay to livestock. White Mold boscalid 5.5–11 oz/A (Suppression only) Do not apply within 21 days of Do not apply more than two (Sclerotinia harvest. applications per season. sclerotiorum) Endura Apply prior to disease development or when conditions are favorable for Do not apply more than 22 oz of disease. product/A per season.

Repeat applications on a 7–14 day interval if conditions are favorable.

Use shorter intervals when disease pressure is high. tetraconazole 4–5 fl oz/A Do not apply after growth stage R5 Use as a part of an integrated (beginning seed). disease management approach with Domark Apply at growth stage R3 (early resistant hybrids, proper fertility, pod stage) or when conditions are Do not make more than 2 residue management and crop favorable for disease. applications per season. rotation.

Repeat applications on a 15–21 day Do not apply more than 10 fl oz/A Apply a minimum of 5 gal/A by air or interval if disease pressure is severe. per season. 10–25 gal/A ground.

Use the higher rate and shorter Do not graze or feed soybean forage intervals when disease pressure is or hay to livestock. high.

32 FOLIAR FUNGICIDES FOR SOYBEANS Disease Fungicide Dosage and Interval Limitations Special Notes White Mold thiophanate-methyl PHI- 21 days (Topsin 4.5 FL, Thorough coverage of the flowers, (Sclerotinia T-Methyl 70W WSB) stems and branches are essential for sclerotiorum) Topsin 4.5 FL 15–20 fl oz/A disease control. Do not apply more than 40 fl oz (Continued) Topsin M 70 WDG 3/4–1 lbs/A (Topsin 4.5 FL), 2 lbs (Topsin M Apply a minimum of 5 gal/A by air 70 WDG, Topsin M 70WP, Topsin (Topsin 4.5 FL, Topsin M 70 WDG, Topsin M 70WP 3/4–1 lbs/A M WSB, T-Methyl 70W WSB) of Topsin M WSB, T-Methyl 70W WSB). product/A/season. Topsin M WSB 3/4–1 lbs/A Do not graze or feed treated vines T-Methyl 70W WSB 3/4-1 lbs/A or hay to livestock.

Make one application at early bloom (R1- R2 growth stage) followed by a second application 7-14 days later if conditions are favorable for continued disease pressure.

SOYBEAN Growth Stage Chart Growth Stage Description VE Emergence VC Cotyledon V1 First trifoliolate V2 Second trifoliolate V3 Third trifoliolate V(n) (n) trifoliolate V6 Flowering will soon start R1 Beginning bloom, first flower R2 Full bloom, flower in top 2 nodes R3 Beginning pod, 3/16” pod in top 4 nodes R4 Full pod, 3/4” pod in top 4 nodes R5 1/8” seed in top 4 nodes R6 Full size seed in top 4 nodes R7 Beginning maturity, one mature pod R8 Full maturity, 95% of pods on plant are mature

33 FOLIAR FUNGICIDES FOR SUNFLOWER Disease Fungicide Dosage and Interval Limitations Special Notes Rust pyraclostrobin 6-12 fl oz/A Do not apply within 21 days of Adjuvants may be used with (Puccinia helianthi) harvest. Headline. Headline Apply prior to disease development and continue on a 7-14 day interval if Do not apply more than two Do not apply more than 24 fl oz/A conditions are favorable for disease. applications of Headline without per season. alternating with a fungicide that Use the higher rate and shorter inter- has a different mode of action for vals when disease pressure is high. at least one application. tebuconazole 4–6 fl oz/A Do not apply within 50 days of Apply a minimum of 5 gal/A by air or harvest. 20 gal/A by ground. AmTide Tebu 3.6F Apply at first visible signs of disease or when conditions are favorable for Do not apply more than 16 fl oz/A The lowest label recommended rate Folicur disease. per season. of surfactant must be added.

Embrace 3.6L Apply higher rate to highly susceptible varieties and/or under severe Monsoon disease conditions.

Onset 3.6L Repeat applications on a 14 day interval if necessary to maintain Orius 3.6F control (AmTide Tebu 3.6F, Folicur, Monsoon, Orius 3.6F, Solera Tebuco- Solera Tebuconazole nazole 3.6F, Tebusha 3.6FL, Tebuzol 3.6F 3.6F, Toledo) .

Tebusha 3.6FL

TebuStar 3.6L

Tebuzol 3.6F

Toledo

Sunflower Growth Stage Chart Growth Stage Description VE Emergence V1 First true leaf V2 Second true leaf V3 Third leaf V(n) (n) leaf R1 Terminal bud is forming a minature floral head R2 The immature bud elongates 0.5–2.0 cm R3 The immature bud elongates more than 2.0 cm R4 The inflorescence begins to open R5 Beginning of flowering R6 Flowering is complete and the ray flowers are wilting R7 The back of the head has started to turn a pale yellow color R8 The back of the head is yellow but the bracts remain green R9 The bracts become yellow and brown. Physiological maturity

34 FOLIAR FUNGICIDES FOR Safflower Disease Fungicide Dosage and Interval Limitations Special Notes Alternaria leaf spot azoxystrobin 6–15.5 fl oz/A Do not apply within 30 days of Use only in an integrated disease (Alternaria spp) harvest. management approach with resistant Quadris Apply prior to disease development. hybrids, proper fertility, residue Do not apply more than two management and crop rotation. sequential applications of Quadris without alternating with another Quadris may be applied by ground, fungicide chemistry. air or through chemigation.

Do not apply more than 27 fl oz/A Use a minimum of 10 gal/A for per season. ground applications. pyraclostrobin 6–12 fl oz/A Do not apply within 21 days of Adjuvants may be used with harvest. Headline. Headline Apply prior to disease development and continue on a 7–14 day Do not apply more than two Do not apply more than 24 fl oz/A per interval if conditions are favorable applications of Headline without season. for disease. alternating with a fungicide that has a different mode of action for at least one application.

Safflower Growth Stage Chart Growth Stage Emergence Rosette Stem Elongation Branching Flowering Mature

35 FOLIAR FUNGICIDES FOR Chickpea Disease Fungicide Dosage and Interval Limitations Special Notes Ascochyta azoxystrobin Do not apply within 14 days of Use only in an integrated disease (Ascochyta spp) harvest. management approach with resistant Quadris 6.2–15.4 fl oz/A hybrids, proper fertility, residue Do not apply more than two management and crop rotation. Amistar 2–5 oz/A sequential applications without alternating with another fungicide Apply by ground, air or through Apply prior to disease development chemistry. chemigation. and continue on a 7–14 day following the resistance Do not apply more than 92.3 fl oz An adjuvant may be added at management guidelines. (Quadris) or 1.5 lbs a.i. (Amistar) of recommended rates. product/A per season. Use higher rates when disease pressure is severe. azoxystrobin + 1.6–2.4 pints/A Do not apply within 14 days of Use only in an integrated disease chlorothalonil harvest. management approach with resistant Apply prior to disease development hybrids, proper fertility, residue Quadris Opti and continue on a 7–14 day Do not apply more than two management and crop rotation. following the resistance sequential applications without management guidelines. alternating with another fungicide Quadris Opti may be applied by chemistry. ground, air or through chemigation.

Do not apply more than 4 applications of Quadris Opti per acre per season. boscalid 6 oz/A Do not apply within 21 days of Do not apply more than two harvest. applications per season. Endura Apply at the beginning of flowering. Do not apply more than 22 oz of Repeat applications on a 7–10 day product/A per season. interval if the disease persists or if conditions are favorable for disease. chlorothalonil Do not apply within 14 days of Apply by ground, air or chemigation. harvest. Bravo Ultrex 1.25–1.8 lbs/A (Apply at early bloom Use sufficient water to obtain stage.) Do not apply more than 7.3 lbs adequate coverage, 5–10 gal/A (Bravo Ultrex), 8 pints (Bravo for concentrated ground and aerial Bravo Weather Stik 1 3/8–2 pints/A ( Begin applications Weather Stik, Equus 720 SST), application. at first onset of disease which may 11.5 pints (Bravo ZN, Equus 500 occur as early as 2–4 weeks before ZN), 6.0 lbs a.i. (Echo 720, Echo flowering.) 90DF, Echo ZN), 7.2 lbs (Equus DF), per acre per season. Bravo ZN 2–2 3/4 pints/A ( Begin applications at first onset of disease which may Do not apply more than 4 times occur as early as 2–4 weeks before per growing season (Bravo Ultrex). flowering.)

Echo 720 1 3/8–2 pints/A (Apply at early bloom stage.)

Echo 90DF 1 1/8–1 5/8 lbs/A (Apply at early bloom stage.)

Echo ZN 2-3 pints/A (Apply during early bloom stage.)

Equus 500 ZN 2.0-2.75 pints/A (Begin applications at first onset of disease which may occur as early as 2-4 weeks before flowering.)

Equus 720 SST 1.37–2 pints/A (Begin applications at first onset of disease which may occur as early as 2–4 weeks before flowering.)

Equus DF 1.25–1.8 lbs/A (Begin applications at first onset of disease which may occur as early as 2–4 weeks before flowering.)

Repeat at 7–10 day intervals.

36 FOLIAR FUNGICIDES FOR Chickpea Disease Fungicide Dosage and Interval Limitations Special Notes Ascochyta maneb 1.2–1.6 quarts/A Do not apply within 30 days of Apply a minimum of 3 gal/A by air or (Ascochyta spp) harvest. 10 gal/A by ground. Manex Apply at the first sign of disease. (Continued) Repeat applications on a 5–7 day Do not apply more than 9.6 quarts interval. of product/A per season.

Use higher rates and shorter intervals when disease pressure is severe. prothioconazole 5–5.7 fl oz/A Do not apply within 7 days of Apply a minimum of 5 gal/A by air or harvest. 10 gal/A by ground. Proline Apply at the first sign of disease. Repeat applications on a 10–14 Do not apply more than 3 A surfactant may be added at day interval if conditions remain applications per season. the lowest recommended rate to favorable for disease. enhance disease control. Do not apply more than 17.1 fl Use the higher rate when conditions oz/A per season. for disease pressure are high or if growing susceptible varieties. pyraclostrobin 6–9 fl oz/A Do not apply within 21 days of Adjuvants may be used with harvest. Headline. Headline Apply prior to disease development and continue on a 7–14 day interval Do not apply more than two Do not apply more than 18 fl oz/A per if conditions are favorable for applications of Headline without season. disease. alternating with a fungicide that has a different mode of action for Pea vines and pea hay may be fed 14 Use the higher rate and shorter at least one application. days after the last application. intervals when disease pressure is high. White Mold thiophanate- PHI- 28 days Apply a minimum of 5 gal/A by (Sclerotinia methyl air(Topsin 4.5 fl, Topsin M 70 WDG, sclerotiorum) Do not apply more than 80 fl oz Topsin M WSB). Topsin 4.5 FL 30-40 fl oz/A (20-30 fl oz/A for (Topsin 4.5 FL), 4lbs (Topsin M 70 multiple applications) WDG, Topsin M 70WP, Topsin M WSB) of product/A/season. Topsin M 70 WDG 1 1/2-2 lbs/A (1-1 1/2 lbs/A for multiple applications)

Topsin M 70WP 1 1/2-2 lbs/A (1-1 1/2 lbs/A for multiple applications)

Topsin M WSB 1 1/2-2 lbs/A (1-1 1/2 lbs/A for multiple applications)

T-Methyl 70W WSB 1-2 lbs/A

For one application: Apply when 100% (50-70% for T-Methyl 70W WSB) of the plants have at least one open bloom or when conditions are favorable for disease development

For multiple applications: Make the first application when 10-30% of plants have at least one open bloom and follow with sequential applications on a 4-7 day interval. Apply prior to disease development for best results.

Chickpea Growth Stage Chart Growth Stage Description 2 branch stage 2 branches unfolded 4 branch stage 4 branches unfolded 8 branch stage 8 branches unfolded Pre-flowering Full Flowering Podding Stage

37 FOLIAR FUNGICIDES FOR Field Pea Disease Fungicide Dosage and Interval Limitations Special Notes Ascochyta azoxystrobin Do not apply within 14 days of Use only in an integrated disease (Ascochyta spp) harvest. management approach with resistant Quadris 6.2-15.4 fl oz/A hybrids, proper fertility, residue Do not apply more than two management and crop rotation. Amistar 2–5 oz/A sequential applications without alternating with another fungicide Quadris and Amistar may be Apply prior to disease development chemistry. applied by ground, air or through and continue on a 7–14 day chemigation. following the resistance Do not apply more than 92.3 fl oz management guidelines. (Quadris) or 0.15 lb a.i. (Amistar) of An adjuvant may be added at product/A per season. recommended rates. Use higher rates when disease pressure is severe. pyraclostrobin 6–9 fl oz/A Do not apply within 21 days of Adjuvants may be used with harvest. Headline. Headline Apply prior to disease development and continue on a 7–14 day interval Do not apply more than two Do not apply more than 18 fl oz/A per if conditions are favorable for applications of Headline without season. disease. alternating with a fungicide that has a different mode of action for Pea vines and pea hay may be feed Use the higher rate and shorter at least one application. 14 days after the last application. intervals when disease pressure is high. Powdery mildew pyraclostrobin 6–9 oz/A Do not apply within 21 days of Adjuvants may be used with (Erysiphe polygoni) harvest. Headline. Headline Apply prior to disease development and continue on a 7-14 day interval if Do not apply more than two Do not apply more than 18 fl oz/A per conditions are favorable for disease. applications of Headline without season. alternating with a fungicide that Use the higher rate and shorter has a different mode of action for Pea vines and pea hay may be feed intervals when disease pressure is at least one application. 14 days after the last application. high. White Mold prothioconazole 5.7 fl oz/A Do not apply within 7 days of Apply a minimum of 5 gal/A by air or (Sclerotinia harvest. 10 gal/A by ground. sclerotiorum) Proline Apply at 25% flower. Do not apply more than 3 A surfactant may be added at Repeat applications as needed on applications per season. the lowest recommended rate to a 5–14 day interval if conditions enhance disease control. remain favorable for continued or Do not apply more than 17.1 fl increasing disease development. oz/A per season.

Field Pea Growth Stage Chart Growth Stage Description VE The epicotyl emerges from the soil. VS Two small scale leaves appear on the stem. V1 The true leaf (pair of leaflets) has unfolded at the first node above VS, no tendril. V2 The second true leaf (one or more pairs of leaflets) has unfolded at the second node, tendril present. V3 The third true leaf (one or more pairs of leaflets) has unfolded at the second node, tendril present. V(n) The nth true leaf (one or more pairs of leaflets) has unfolded at the nth node, tendril present. R1 Flower bud present at one or more nodes. R2 First open flower at one or more nodes. R3 First flat pod present at one or more nodes. R4 Green seeds fill the pod cavity at one or more nodes. R5 Yellow or dry seeds fill the pod cavity at one or more nodes. R6 The leaves start yellowing and lower pods have turned yellow to golden brown. R7 Most pods on the plant are yellow to golden-brown.

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