Table of Contents

Total Page:16

File Type:pdf, Size:1020Kb

Table of Contents Table of Contents 1. Storage and Processing Evaluation of Advanced Potato Breeding Clones by Martin Glynn and Dr. Joe Sowokinos………………………………………………………………………………...1 2. Management of Powdery Scab and Potato Mop Top Virus Using Genetic Resistance by Neil C. Gudmestad.............……………………………………………………………………………..8 3. Prevalence of SDHI Resistance in Minnesota and North Dakota by Neil C. Gudmestad…….13 4. Screening Promising Germplasm for Cold-induced Sweetening (CIS) Resistance and Improved Nutritional Quality to Compliment Potato Breeding Programs and New Variety Development by Sanjay K. Gupta and Christian A. Thill …….………………………….……...19 5. 2013 Irrigated Starter Fertilizer Trial by Harlene Hatterman-Valenti and Collin Auwarter.………………………………………………………………………………………...21 6. Dessication in Red Norland Potatoes by Harlene Hatterman-Valenti and Collin Auwarter………………………………………………………………………………………....23 7. Effect of Simulated Glyphosate Drift to Four Potato Processing Cultivars by Harlene Hatterman-Valenti, Collin Auwarter and Andrew Robinson…………………………………….24 8. Glyphosate Carryover Effect to Daughter Tubers from Simulated Glyphosate Drift to Four Potato Processing Cultivars by Harlene Hatterman-Valenti, Collin Auwarter, and Andrew Robinson…………………………………………………………………………………………29 9. Red Norland In-furrow Fertilizer Trial by Harlene Hatterman-Valenti and Collin Auwarter.…………………………………………………………………………………….......35 10. Russet Burbank in-furrow Fertilizer Trial by Harlene Hatterman-Valenti and Collin Auwarter…………………………………………………………………………………………36 11. Aphid Alert II – Monitoring Aphid Vectors of Virus in Potato by Dr. Ian MacCrae ….…...37 12. Establishing a Resistance Monitoring Program for Neonicotinoid Insensitive Colorado Potato Beetle in Minnesota and North Dakota by Dr.Ian MacRae…………………...………………....60 13. Remote Sensing of Potato Virus Y – A Preliminary Assessment by Dr. Ian MacCrae and Asunta L. Thompson…………………………………………………………………………..…73 14. Effects of Linex as a Preemergence Herbicide on Russet Burbank Potato by Andrew P. Robinson and Eric Brandvik…………………………………………………………………..…77 15. Fresh Market Potato Variety Testing by Andrew P. Robinson and Asunta (Susie) L. Thompson...……………………………………………………………………………………....80 16. Sustainable Production of Dakota Trailblazer by Andrew P. Robinson, Ryan Larsen, Asunta Thompson, and Neil Gudmestad…………………………………………………………….…...83 17. Using Reduced Herbicide Rates to Control Buckwheat and Nightshade in Potatoes by Andrew P. Robinson and Harlene Hatterman-Valenti…………………………………………..92 18. Evaluation of Crystal Green as a Phosphate Source for Irrigated Potatoes by Carl Rosen, James Crants, Matt McNearney, and Peter Bierman…………………………………………....97 19. Evaluation of StollerUSA Products on Potato Yield and Quality by Carl Rosen, Matt McNearney, and James Crants…………………………………………………………………108 20. Irrigated Potato Response to Rate and Application Timing of Two Controlled Release Nitrogen Fertilizers by Carl Rosen, James Crants, and Matt McNearney……………...…...…115 21. On-Farm Evaluation of Potato Response to Nitrogen Source and Rate by Carl Rosen, James Crants, and Matt McNearney…………………………………………………………………..131 22. Optimizing Potassium Management for Irrigated Potato Production Red Norland by Carl Rosen, Matt McNearney, and Peter Bierman…………………………………………………..148 23. Optimizing Potassium Management for Irrigated Potato Production Russet Burbank by Carl Rosen, Matt McNearney, James Crants, and Peter Bierman……..........................................…157 24. Blemish Disease Research 2013 by Gary Secor, Viviana Rivera, Russell Benz and Dean Peterson ………………………………………………………………………………………..169 25. 2013 Potato Breeding University of Minnesota Report Research Summary by Christian A. Thill……………………………………………………………………………………………..172 26. Potato Breeding and Cultivar Development for the Northern Plains by Asunta (Susie) L. Thompson…………………………………………………………………………………...…..239 Storage and processing evaluation of advanced potato breeding clones. Martin Glynn Dr. Joe Sowokinos USDA/ARS Professor Emeritus Potato Research Worksite Department of Horticultural Science East Grand Forks, MN University of Minnesota Materials and Methods Results Discussion Summary . References Valley Potato Grower As State Breeder Phone E-Mail 2011 - 2012 Class A: CC AGT SUCROSE GLUCOSE CC AGT SUCROSE GLUCOSE 45°F 42°F Clone Source (mg/g) (mg/g) (mg/g) (mg/g) 48 NY 145 ND 1 68 0.62 0.01 1 67 1.02 0.04 37 ND 7519-1 ND 1 67 1.00 0.03 1 65 1.19 0.03 39 ND 8-14 ND 1 64 1.69 0.66 1 65 1.14 0.04 63 W 5015-12 WI 1 67 1.70 0.03 1 64 1.21 0.12 60 W 2717-5 WI 1 65 0.82 0.08 1 64 0.91 0.10 59 W 2310-3 WI 1 64 0.86 0.03 1 64 1.22 0.05 24 NYE 106-4 NY 1 65 0.91 0.03 1 63 2.86 0.16 46 ND 860-2 ND 1 65 0.65 0.05 1 62 1.09 0.10 56 Sport 860 ND 2 62 0.94 0.04 1 62 0.76 0.19 22 Dakota Pearl ND 1 65 0.81 0.07 1 61 1.05 0.09 42 ND 8305-1 ND 1 66 1.21 0.01 1 61 2.63 0.08 5 AO 1143-3C ID 1 65 0.81 0.06 2 60 2.21 0.09 25 Ivory Crisp ND/OR/ID/USDA 2 62 1.28 0.08 2 60 1.00 0.14 44 ND 8331CB-2 ND 1 64 1.72 0.28 2 59 2.19 0.34 1CC 1CC= 1CC = Represents chip color relating to the Potato Chip/Snack Food Association five-code color chart: 1 and 2 are acceptable, 3 is marginal, 4 and 5 are unacceptable. 2Agtron values of 60 or greater yield acceptable colored chips. 3Acceptable values for Glc (glucose) are 0.25 mg/g (0.025%) or less. ***** Denotes no data. Table 2: 2011 - 2012 Class B: CC AGT SUCROSE GLUCOSE CC AGT SUCROSE GLUCOSE 45°F 42°F Clone Source (mg/g) (mg/g) (mg/g) (mg/g) 47 Norvalley ND 2 61 1.17 0.19 3 57 0.79 0.64 33 MSR 127-2 MI 2 55 1.99 0.60 3 56 1.65 0.54 21 Dakota Crisp ND 2 57 1.14 0.09 3 55 1.12 0.68 41 ND 8304-2 ND 1 64 1.88 0.56 2 55 2.31 0.99 55 Snowden WI 2 60 1.39 0.59 3 55 0.92 0.50 29 MSL 292-A MI 2 60 1.40 0.41 3 55 1.08 0.69 9 Atlantic USDA 2 59 1.94 0.62 3 55 1.10 0.88 15 CO 0197-3W CO 2 62 0.51 0.14 3 55 0.62 2.30 64 W 5955-1 WI 2 62 0.96 0.07 3 54 1.05 0.60 28 MSL 007-B MI 2 59 0.74 0.24 3 54 0.84 0.59 61 W 2978-3 WI 2 58 0.78 0.32 3 53 1.22 0.88 31 MSQ 086-3 MI 2 60 0.64 0.11 3 53 0.98 1.04 27 MSJ 126-9Y MI 2 61 0.74 0.51 3 53 1.16 0.73 30 MSQ 070-1 MI 2 58 1.59 0.34 3 52 1.11 0.99 1CC = Represents chip color relating to the Potato Chip/Snack Food Association five-code color chart: 1 and 2 are acceptable, 3 is marginal, 4 and 5 are unacceptable. 2Agtron values of 60 or greater yield acceptable colored chips. 3Acceptable values for Glc (glucose) are 0.25 mg/g (0.025%) or less. ***** Denotes no data. Table 3 2011 - 2012 Class C: CC AGT SUCROSE GLUCOSE CC AGT SUCROSE GLUCOSE 45°F 42°F Clone Source (mg/g) (mg/g) (mg/g) (mg/g) 14 CO 0188-4W CO 3 55 0.52 0.07 3 53 0.99 0.79 62 W 4980-1 WI 3 53 0.97 0.27 3 52 0.83 0.91 8 AOTX 98152-3RU ID/OR/TX 3 53 0.71 0.33 3 52 0.97 1.33 23 Dakota Trailblazer ND 3 52 0.93 0.44 3 52 1.36 0.70 32 MSR 061-1 MI 3 57 1.71 0.45 3 52 1.63 1.13 43 ND 8307C-3 ND 1 64 1.43 0.37 2 52 2.02 0.60 6 AOND 95292-3RUSS ID/OR/ND 3 52 0.99 0.89 3 51 2.81 2.12 19 CO 99100-1RU CO 3 54 1.07 0.45 3 51 1.14 1.19 35 NCB 2497-17 NC 3 51 2.09 1.50 67 W 8946-1RUS WI 3 52 0.78 1.01 3 50 0.10 1.72 36 NCO 349-3 NC 2 53 1.22 0.45 3 50 0.65 2.64 1 A 98345 ID 3 52 0.66 1.11 3 50 1.32 1.52 17 CO 99053-3RU CO 3 52 0.70 1.13 3 50 0.33 2.92 40 ND 8229-3 ND 3 48 1.66 0.59 3 50 1.68 1.24 68 Yukon Gem ID 2 59 1.23 0.30 2 50 0.47 1.96 65 W 6234-4RUS WI 3 58 0.69 0.10 3 49 0.85 1.15 10 ATX 9202-3RUS ID/TX 3 48 1.11 0.94 3 47 0.84 2.32 26 MSH 228-6 MI *** *** *** *** 3 47 1.09 1.04 45 ND 8331-CB-3 ND 3 50 1.20 1.79 3 47 2.07 3.55 3 AO 02060-3TE ID/OR *** *** *** *** 3 46 1.77 2.81 4 AO 1010-1 ID/OR 2 57 0.46 1.11 3 46 0.79 3.10 20 COTX 90046-1W CO/TX 3 52 1.24 1.11 3 46 2.30 3.63 50 Red Norland ND 3 50 0.35 1.35 3 46 1.15 4.53 57 Umatilla ID/OR 3 52 1.18 1.58 3 46 0.76 1.91 13 CO 001399-10P/Y CO 3 45 0.07 0.99 3 45 0.00 2.70 12 CO 000270-7W CO 3 53 2.15 0.91 3 45 3.30 3.03 18 CO 99053-4RU CO 3 51 0.63 2.90 4 44 1.38 5.66 CC AGT SUCROSE GLUCOSE CC AGT SUCROSE GLUCOSE 45°F 42°F Clone Source (mg/g) (mg/g) (mg/g) (mg/g) AOTX 96216- 7 2RU ID/OR/RX *** *** *** *** 4 43 0.85 5.07 49 Ranger Russ ID/OR/WA/CO 3 45 0.00 2.56 4 43 0.10 5.91 Russ 52 Norkotah ND/TX 3 50 1.54 0.79 4 43 1.29 2.92 34 NC 182-5 NC 3 50 1.40 0.53 3 42 2.29 3.17 11 Classic Russ ID 3 46 0.70 1.61 4 42 1.14 3.94 51 Russ Burbank CO 3 48 0.63 2.93 4 42 0.85 3.77 69 Yukon Gold CAN 3 50 0.90 2.84 4 42 1.38 2.39 16 CO 98067-7RU CO 3 53 0.94 0.91 4 41 2.09 3.84 66 W 6360-1RUS WI 3 50 1.40 0.93 4 41 0.14 2.31 54 Shepody CAN/NB 4 39 0.31 2.04 4 40 0.69 3.97 53 Sangre ID/CO 4 36 1.63 5.96 4 37 1.75 6.57 2 AO 008-1TE ID/OR 4 45 1.40 1.76 5 34 2.06 4.34 58 Viking ID/OR/CO/WA 4 39 1.57 3.46 5 34 2.85 6.93 1CC = Represents chip color relating to the Potato Chip/Snack Food Association five-code color chart: 1 and 2 are acceptable, 3 is marginal, 4 and 5 are unacceptable.
Recommended publications
  • Early Blight of Tomato
    Dr. Yonghao Li Department of Plant Pathology and Ecology The Connecticut Agricultural Experiment Station 123 Huntington Street, P. O. Box 1106 New Haven, CT 06504 Phone: (203) 974-8601 Fax: (203) 974-8502 Founded in 1875 Email: [email protected] Putting science to work for society Website: www.ct.gov/caes EARLY BLIGHT OF TOMATO Early blight, caused by Alternaria solani, is a sunscald of fruit. common fungal disease of tomatoes grown in Stem infections can occur at any age, and fields, greenhouses, and high tunnels. In result in small, dark, slightly sunken areas that warm, rainy and wet weather, epidemics of enlarge to form circular or elongated this disease can cause severe defoliation, yield concentric lesions (Figure 2). loss, and poor fruit quality. The fungus also infects potato. Fruit can be infected during the green or ripe SYMPTOMS AND DIAGNOSTICS The fungus can infect most parts of a tomato plant, including leaves, stems, and fruit. Lesions on leaves first appear as small (less than 1/16 inch) brown spots surrounded by yellow discolorations. Diagnostic symptoms develop as the spots enlarge and become dark brown or black lesions with concentric rings, usually 1/3 to 1/4 inch in diameter (Figure 1). Under favorable conditions, many lesions Figure 2. An elongated concentric lesion coalesce and result in severe defoliation and (arrow) on the stem. Figure 3. A black and sunken lesion on the tomato fruit. Figure 1. Dark brown or black concentric Figure 3. A black and sunken lesion (arrow) lesions (arrows) on tomato leaves. on the tomato fruit.
    [Show full text]
  • Potato Di~Ea~E~ Early Blight Phillip Wharton and William Kirk Department of Plant Pathology, Michigan State University Early Blight Symptoms Alternaria Solani (E
    Extension Bulletin E-2991 • New • May 2007 ~----------------------- -----------------------~------~ MICHI6AN Potato Di~ea~e~ Early Blight Phillip Wharton and William Kirk Department of Plant Pathology, Michigan State University Early Blight Symptoms Alternaria solani (E. & M.) Jones and Grout Foliar symptoms of early blight first appear as small, (Hyphomycetes, Hyphales) irregular to circular dark brown spots on the lower (older) leaves. These spots may range in size from Introduction a pinpoint to 1/8 inch in diameter (Fig. 1). As the Early blight is a very common disease of potato that spots enlarge, they become restricted by leaf veins is found in most potato-growing areas. Although it and take on an angular shape. Early in the growing occurs annually to some degree in most production season, lesions on young, fully expanded, succulent areas, the timing of its appearance and the rate of leaves may be larger - up to 112 inch in diameter disease progress help determine the impact on the - and may, because of their size, be confused with potato crop. The disease occurs over a wide range of late blight lesions (Fig. 2). Leaf lesions are relatively climatic conditions and depends in large part on the easy to identify in the field because lesion develop­ frequency of foliage wetting from rainfall, fog, dew or ment is characterized by a series of dark concentric irrigation, on the nutritional status of foliage and on rings alternating with bands of light tan tissue (Fig. 3). cultivar susceptibility. Though losses rarely exceed 20 A narrow band of chlorotic tissue often surrounds percent, if left uncontrolled, the disease can be very each lesion, and extensive chlorosis of infected destructive.
    [Show full text]
  • 2021 Alaska Certified Seed Potato Varieties
    2021 Alaska Certified Seed Potato Varieties Variety Name Possible Other Names Potato Skin Color Potato Flesh Color Cooking/Eating Information Flower Description Yield Information Disease/Pest Information Adirondack Dark Blue (2) Dark Purple (2) Good roasted, steamed, and Petals are mainly Produces higher Can be susceptible to Blue in salads. Can be chipped, but white with some blue- yields than most common scab, silver scurf, not after being in cold storage. purple pigmentation. blue varieties. (1) and Colorado potato beetle. (1) (1) (1) Alaska AK Frostless Whitish/Yellowish White (3) Excellent flavor. (3) Good for Blue violet petals (3) Medium to high Somewhat resistant to Frostless (3) baking, chipping, and making yield potential. (3) common scab. Susceptible into french fries. Not good for to late blight, wart, and chipping after cold storage. (8) golden nematode. (3) Alaska Mountain Blush* Alaska Red AK Redeye Red (2) White (2) Good texture and flavor. Good Dark lilac petals. (9) High yielding. (9) Some susceptibility to scab. for boiling and baking, but not Susceptibility/resistance to good for chipping. (9) other diseases or pests is unknown. (9) Alby's Gold Yellow (2) Yellow (2) Texture is starchy. (2) Allegany Buff (10) Whitish-Yellowish Good for making french fries Light purple petals. High yielding. (10) Resistant to golden (10) and chipping, even after Yellow anthers. (10) nematode, early blight, and tubers are placed in cold verticillium wilt; some storage. Has good taste and resistance to pitted scab and texture after boiling and late blight. (10) baking. (11) Allagash Allagash Whitish/Yellowish White (3) Good Taste.
    [Show full text]
  • Potatoes in the Home Garden
    for the Gardener Growing Potatoes in the Home Garden f you could cultivate a vegetable crop that could be grown in almost every climate (except hot tropical zones) from sea level to 15,000 feet, could be eaten for breakfast, lunch, dinner, and snacks, prepared in a myriad of ways, be easily kept Iwithout processing or refrigeration for up to 6-8 months, produced high yields (2-5 pounds per square foot) and was extremely nutritious (high in protein, vitamin C, niacin, B vitamins, iron and energy) but low in calories (sans butter and sour cream), you would wouldn’t you? If you did you would be in the minority of home gardeners. Most gardeners eschew the illustrious “spud” (Solanum tuberosum), thinking it doesn’t warrant space in the small garden and that home grown potatoes don’t taste much better than their store-bought counterparts. Not true! Wrong on both counts. Solanum tuberosum (the Andean potato) originated in the highlands of the Andes mountain ranges of South America (Peru, Columbia, Ecuador, Bolivia) at elevations up to 15,000 feet. Potatoes have been in cultivation for more than 2000 years and there are more than 2,000-3,000 Beveridge Melisa varieties extant today. It is an herbaceous perennial in its native habitat, but treated as a tender annual in the temperate zones and damaged by frost at 28-30°F. The plant’s only edible portions are the tubers produced underground, apically (at the tip) on stolons (horizontal underground stems; see drawing at right). While potatoes produce viable seed, the genetic makeup of sexually- produced plants is so diverse and variable (heterozygous) that production from this seed is negligible.
    [Show full text]
  • 2015 Consortium Research Reports
    Northwest Potato Research Consortium Cooperative Effort of the Potato Commissions of ID, OR, & WA Current Projects -- Growing year 2014, Commission fiscal year 2014-15 http://nwpotatoresearch.com/ (**Contact information for each scientist is listed at the end of this document.**) Pests and Pest Management Research ZC/Potato Psyllid Research Evaluation of potato insect pest management programs Alan Schreiber (ADG, Inc.), Erik Wenninger (U of I), Silvia Rondon & Stuart Reitz (OSU), Tim Waters (WSU) OBJECTIVES: 1. Generate efficacy data on products/programs for control of potato psyllids. 2. Examine the effects of insecticides that target potato psyllid on chemical control strategies for other insect pests. 3. Determine if potato psyllid control foments outbreaks of other insect pests. 4. Determine the effect of potato psyllid control on natural enemies. Comparative biology of potato psyllid haplotypes and implications for Northwest potato growers Dave Horton, Joe Munyaneza, Rodney Cooper, Kylie Swisher (USDA-ARS) OBJECTIVES: 1. Examine overwintering biology of haplotypes. 2. Bittersweet nightshade as an alternate host. 3. Examine vector efficiency of haplotypes. 4. Develop means for visually separating haplotypes on yellow sticky cards. Population genetics of the potato psyllid in the inland Northwest Bill Snyder, Zhen "Daisy" Fu (WSU) OBJECTIVES: 1. Working with the WSU core genomics facility, sequence the entire genome of a representative of a population of northwest psyllids. 2. Use the RAD-tag approach to determine relatedness among psyllids collected from potato and nightshade, across collection points in WA, OR and ID. 3. Determine whether distinct genetic groups that we have identified differ in their likelihood of carrying the zebra chip pathogen, and whether these groups exist in different parts of the inland northwest.
    [Show full text]
  • Potato - Wikipedia, the Free Encyclopedia
    Potato - Wikipedia, the free encyclopedia Log in / create account Article Talk Read View source View history Our updated Terms of Use will become effective on May 25, 2012. Find out more. Main page Potato Contents From Wikipedia, the free encyclopedia Featured content Current events "Irish potato" redirects here. For the confectionery, see Irish potato candy. Random article For other uses, see Potato (disambiguation). Donate to Wikipedia The potato is a starchy, tuberous crop from the perennial Solanum tuberosum Interaction of the Solanaceae family (also known as the nightshades). The word potato may Potato Help refer to the plant itself as well as the edible tuber. In the region of the Andes, About Wikipedia there are some other closely related cultivated potato species. Potatoes were Community portal first introduced outside the Andes region four centuries ago, and have become Recent changes an integral part of much of the world's cuisine. It is the world's fourth-largest Contact Wikipedia food crop, following rice, wheat and maize.[1] Long-term storage of potatoes Toolbox requires specialised care in cold warehouses.[2] Print/export Wild potato species occur throughout the Americas, from the United States to [3] Uruguay. The potato was originally believed to have been domesticated Potato cultivars appear in a huge variety of [4] Languages independently in multiple locations, but later genetic testing of the wide variety colors, shapes, and sizes Afrikaans of cultivars and wild species proved a single origin for potatoes in the area
    [Show full text]
  • Minnesota Area Ii Potato Research and Promotion Council
    MINNESOTA AREA II POTATO RESEARCH AND PROMOTION COUNCIL AND NORTHERN PLAINS POTATO GROWERS ASSOCIATION 2021 RESEARCH REPORTS Table of Contents 3. Evaluation of MN13142: An Advanced Breeding Clone with Long Dormancy & Other Desirable Traits S. Gupta, J. Crants, M. McNearney & C. Rosen 11. Evaluating Bruising in Storage Among New Fresh-Market and Processing Varieties D. Haagenson 20. Management of Colorado Potato Beetle 2020 I. MacRae 34. Managing PVY Vectors 2020 I. MacRae 41. Developing Remote Sensing-based Yield Mapping Technologies for Potato in Minnesota Y. Miao 51. Adjusting Planting Date for the Management of Verticillium Wilt J. Pasche 59. Support of Irrigated Potato Research for North Dakota and Minnesota 2020 J. Pasche 61. Late Blight Spore Trapping Network for Minnesota A. Robinson & J. Pasche 68. Measuring Nitrogen Uptake in Russet Burbank A. Robinson 72. ND Fresh Market Potato-Cultivar/Selection Trial Results for 2020 A. Robinson, S. Thompson, E. Brandvik & P. Ihry 76. Effect of Branded Versus Broadcast Application of ESN, Turkey Manure & Different Approaches to Measuring Plant N Status on Tuber Yield & Quality in Russet Burbank Potatoes C. Rosen, J. Crants, B. Bohman & M. McNearney 86. Yield & Quality Responses of Ivory Russet & Russet Burbank Potatoes to P Rate, Banded P Application, Soil Fumigation & Mycorrhizal Inoculation in High-P Soils C. Rosen, J. Crants & M. McNearney 98. Evaluation of Mosaic Products as P, S, MG, and Zn Sources for Russet Burbank Potatoes C. Rosen, J. Crants, & M. McNearney 103. Evaluation of NACHURS Products in Russet Burbank Potatoes C. Rosen, J. Crants & M. McNearney 110. Data Report for Potato Breeding Program Data Report 2020 L.
    [Show full text]
  • Methods for Inoculation of Tomatoes and Potatoes with Alternaria Solani in the Greenhouse and Field
    Methods for inoculation of tomatoes and potatoes with Alternaria solani in the greenhouse and field June 2014 Gerd Stammler, Simone Miessner, Franziska Böhme BASF SE, Agricultural Center, Speyerer Strasse 2, 67117 Limburgerhof, Germany Isolation of strains of A. solani Dried leaf samples with typical Early blight symptoms are sterilized, lesions were cut out and placed on 2 % malt agar (at 16°C or 22°C). Outgrowing mycelium is transferred on new Petri dishes. Pure cultures are made by additional transfers. Isolated species are determined by their spore size and shape. Inoculation of tomatoes with single isolates in the greenhouse Three weeks old tomato plants (cv. Goldene Königin) are inoculated with spore suspensions from different isolates. 10 ml spore suspensions of each A. solani isolate are made with deionized water or 0.2 % or 2 % malt solution, respectively. The concentration of the spore suspensions should be around ~105 spores per milliliter. Inoculated plants are incubated in a moist chamber at 20°C and 95 % relative humidity. During the first 24 hours a lid covers the plants in order to prevent the spore suspension from washing off the wet leaves. The plants are kept for one week and rated regularly to measure the disease progress. Disease progress is highest if spores are suspended in 2 % malt, followed by 0.2 % malt and water (Figure 1). Experiments can also be done in the same way with older plants (Figure 2) Figure 1. Tomato seedlings inoculated with different isolates of Alternaria solani. Spores were suspended in water, 0.2 % malt and 2 % malt, respectively.
    [Show full text]
  • Tomato Disorders: Early Blight and Septoria Leaf Spot (A2606)
    A2606 Tomato omato disorders: Early blight and Septoria leaf spot T KAREN DELAHAUT a n d WALT STEVENSON Both early blight and Septoria Symptoms and effects Septoria leaf spot is first notice- leaf spot are potentially serious dis- Early blight is primarily a able by the small, circular spots on eases that affect the leaves, stems, foliage disease, but may also cause the upper surface of the lower leaves. and fruit of tomatoes. Early blight, fruit to rot near the stem in late fall. There is often a corresponding water- caused by the fungus Alternaria solani, Symptoms of early blight first appear soaked spot on the lower leaf surface. can also infect eggplant. Septoria leaf on older leaves and are characterized These spots are smaller and more spot is caused by Septoria lycopersici by irregularly shaped brown spots numerous than those of early blight. and can infect ground cherries, jim- with concentric rings. Usually the They are 1/16–1/4 inch in diameter sonweed, and nightshade as well. tissue surrounding each spot turns and have a tan or light-colored center. Both diseases thrive during periods yellow. The spots enlarge to Tiny black fruiting bodies may be of moderate temperatures and abun- 1/4–1/2 inch in diameter and coalesce, found in the center of these lesions. dant rainfall. They may occur on causing the leaf to turn brown and Infected leaves may drop from the plants of any age, but they usually drop. As the plant loses its leaves, the plant. Spotting of the stem and blos- become evident after the plants begin fruit become exposed to the sun and soms may also occur.
    [Show full text]
  • Seed Potato Directory 2017
    The farm operation grows 93 acres of field generations one and two seed, operates 4 greenhouses producing conventional and NFT minitubers. Our stewardship of this seed continues through WISCONSIN the certification Our of stewardship these seed oflots this on seed Wisconsin continues seed through grower t farms, there is no other program like it. CERTIFIED The program maintains variety trueness to type; selecting and testing clones, rogueing of weak, genetic variants, and diseased plants to continue to develop and maintain germplasm of your SEED POTATOES favorite varieties at our laboratory. 103 Years of Seed Growing Tradition A Century Long Tradition Pioneers In Seed Potato Certification Administered since inception by the College of Agricultural and Life Sciences, University of Wisconsin – Madison, the program Much of the early research work on potato diseases and how retains a full-time staff of experienced professionals to ensure they spread was done Scientists in Germany found and that, Holland through around careful the monitoring turn thoroughness and impartiality in inspection and certification of the century. Scientists found that, through careful monitoring procedures. o of the crop and removal of unhealthy plants, Similar they could research maintain soon was a vigorous, healthy stock indefinitely. Similar research soon was Through providing information, exercising technical skill, doing b being conducted in the United States. research directed at solving problems, and conducting outreach activities, the University meets the growers at the field level. USDA plant pathologist W.A. Orton had studied potato This special relationship to the academic community brings new certification in Germany and upon his return, began to work with T information on pathogens, best practices, and introduces high potato growers and Universities to introduce those concepts quality basic seed into the marketplace.
    [Show full text]
  • 2019 Potato Crop Year Research Reports
    MINNESOTA AREA II POTATO RESEARCH AND PROMOTION COUNCIL AND NORTHERN PLAINS POTATO GROWERS ASSOCIATION 2020 RESEARCH REPORTS Table of Contents 3. Vine Desiccation as an Effective Disease Management Strategy to Control Verticillium Wilt of Potato N. Gudmestad 9. Evaluation of a Promising Minnesota Clone for N Response, Agronomic Traits & Storage Quality S. Gupta, J. Crants, M. McNearney & C. Rosen 16. Measuring Bruise Susceptibility Among New Fresh Market & Processing Varieties in Storage D. Haagenson 19. Baseline Evaluation of Pollinator Landscape Plantings Bordering Commercial Potato I.MacRae 25. Management of Colorado Potato Beetle in Minnesota & North Dakota I. MacRae 30. Managing PVY Vectors, 2019 I. MacRae 37. Carryover of Imazamox in Soil of Potato Fields A. Robinson 43. Evaluation of Fresh Potato Cultivars in the Field and Storage A. Robinson & D. Haagenson 46. Late Blight Spore Trapping Network for Minnesota A. Robinson & N. Gudmestad 52. ND Fresh Market Potato-Cultivar/Selection Trial Results for 2019 A. Robinson, E. Brandvik & P. Ihry 56. A Novel Approach to Manage Nitrogen Fertilizer for Potato Production Using Remote Sensing C. Rosen, J. Crants, M. McNearney & B. Bohman 65. Effects of Application Timing & Banded Versus Broadcast Application of ESN on Russet Burbank Potatoes C. Rosen, J. Crants & M. McNearney 79. Evaluation of Aspire, MicroEssentials S10 & MicroEssentials SZ as Sources of Potassium, Phosphate, Sulfur, Boron & Zinc for Russet Burbank Potatoes C. Rosen, J. Crants, & M. McNearney 87. Evaluation of Co-Granulated Formulation of K & B for Russet Burbank Potato Production C. Rosen, J. Crants & M. McNearney 94. Optimizing Planting Configuration, Planting Density, & N Rate for Russet Burbank Potato Production C.
    [Show full text]
  • 2004 Michigan Potato Research Report
    MICHIGAN STATE UNIVERSITY AGRICULTURAL EXPERIMENT STATION IN COOPERATION WITH THE MICHIGAN POTATO INDUSTRY COMMISSION 2004 MICHIGAN POTATO RESEARCH REPORT Photo on Left Left to Right: Ben Kudwa, First Last, First Last, First Last, Senator Alan Cropsey, First Last, First Last Volume 36 TABLE OF CONTENTS PAGE INTRODUCTION AND ACKNOWLEDGMENTS……………………………. 1 2004 POTATO BREEDING AND GENETICS RESEARCH REPORT David S. Douches, J. Coombs, K. Zarka, S. Copper, L. Frank, J. Driscoll and E. Estelle…………………………………………. 5 2004 POTATO VARIETY EVALUATIONS D. S. Douches, J. Coombs, L. Frank, J. Driscoll, J. Estelle, K. Zarka, R. Hammerschmidt, and W. Kirk…………………..….……...… 18 MANAGEMENT PROFILE FOR NEW POTATO VARIETIES AND LINES DECEMBER 2004 Sieg S. Snapp, Chris M. Long, Dave S. Douches, and Kitty O’Neil…...….. 50 2004 ON-FARM POTATO VARIETY TRIALS Chris Long, Dr. Dave Douches, Fred Springborn (Montcalm), Dave Glenn (Presque Isle) and Dr. Doo-Hong Min (Upper Peninsula)..…... 56 SEED TREATMENT, IN-FURROW AND SEED PLUS FOLIAR TREATMENTS FOR CONTROL OF POTATO STEM CANKER AND BLACK SCURF, 2004 W.W. Kirk and R.L. Schafer and D. Berry, P. Wharton and P. Tumbalam………………………………..……...…………..………..... 70 POTATO SEED PIECE AND VARIETAL RESPONSE TO VARIABLE RATES OF GIBBRELLIC ACID 2003-2004 Chris Long and Dr. Willie Kirk……………..……...…………..……….... 73 MANAGING RHIZOCTONIA DISEASES OF POTATO WITH OPTIMIZED FUNGICIDE APPLICATIONS AND VARIETAL SUSCEPTIBILITY; RESULTS FROM THE FIELD EXPERIMENTS. Devan R. Berry, William W. Kirk, Phillip S. Wharton, Robert L. Schafer, and Pavani G. Tumbalam………………….……….... 78 HOST PLANT RESISTANCE AND REDUCED RATES AND FREQUENCIES OF FUNGICIDE APPLICATION TO CONTROL POTATO BLIGHT (COOPERATIVE TRIAL QUAD STATE GROUP 2004) W.W.
    [Show full text]