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Turfgrass & Ornamental Field TURFGRASS & ORNAMENTAL FIELD DAY Division of Plant Science - CAFNR - University of Missouri South Farm Research Center Columbia, MO July 19, 2016 Faculty Dr. Bruce Barrett – Entomology Dr. Brad Fresenburg – Turfgrass Research & Extension Dr. Lee Miller – Turfgrass Pathology Dr. David Trinklein – Floriculture Dr. Xi Xiong – Turfgrass Management & Physiology Tim Moloney - Landscape Design Research Specialists Daniel Earlywine – Turfgrass Pathology Patti Hosack - MU Plant Diagnostic Clinic Director Graduate Research Assistants Naba Amgain Matt Fleetwood Waana Kaluwasha John Koehler Michael Patterson Kyle Robertson Enzhan Song Find us on the web: Brought to you by: turf.missouri.edu turf.missouri.edu/stat turfpath.missouri.edu motoc.org Editor’s Note Table of Contents e would like to express our gratitude to our industry sponsors for Sponsors and Contributors ......................................................................................................................................................................................4 their incredible support of the Mizzou Turfgrass & Ornamental Field Day Sponsors ..................................................................................................................................................................................................5 Field Day Vendors ....................................................................................................................................................................................................6 Programs. Without this assistance, we would not be able to build Schedule of Events Calendar ..................................................................................................................................................................................7 Wupon our programs, nor be able to function at the research and extension level that this great state of Missouri needs and deserves. We would also like to thank our wonderful colleagues at the MU Agronomy Research Center at Field Day Presentations Bradform Farm and those at South Farms for assisting us with the logistics and set up of this event. Stops* We have listed our contributors on the first page of this booklet to signify our appre- 1 Evaluation of Herbicide Formulations for Control of Ground Ivy (Glechoma hederacea) - Matt Fleetwood & Dr. Xi Xiong ...........................8 ciation of their support. While we strive to make this list as comprehensive as pos- 2 Dollar Spot: Got it, now how quickly can I get rid of it? - Daniel Earlywine ..................................................................................................10 sible, please let me or another faculty member know if your organization should be 3 Evaluating Hot Herbaceous Ornamentals that are Cool Under Summer Pressure - Dr. David Trinklein .....................................................13 on this list. If an error has occurred, please accept our sincere apology, and we will 4 MU Plant Diagnostic Clinic—2016 Common Diseases and Things to Watch Out For - Patti Hosack ..........................................................14 correct it in the future. 5 Mizzou’s Landscape Design Education-A Professional Approach - Tim Maloney....................................................................................................... 18 6 What’s Bugging You? Troubleshooting/Bring your Question Session - Dr. Brad Freesenburg ...................................................................23 In addition to our program sponsors, I’d also like to thank our numerous sponsors 7 Localized Dry Spot: Can Wetting Agents Remove Hydrophobic Coatings From USGA Sand? - Steve Song & Dr. Xi Xiong ......................25 and vendors at this 2015 field day. These companies are also listed and recognized 8 Nitrogen & Large Patch: When, Where, and Why? - John Koehler .............................................................................................................35 on these opening pages, because their participation and support has played an inte- 9 Integrating Management Strategies for Spring Dead Spot and Large Patch Control - Dr. Lee Miller ..........................................................39 gral part in facilitating this event. 10 The Vital Role of Pollinators for Human Health and Wildlife, & How to Support them in the Landscape - Carol Davit ................................43 Inside this booklet, we hope you will find valuable research and insights that you can bring back to your operation to make it more successful. Whether your operation * STOP Number is referenced on farm map on the back cover of this booklet. is a lawn, landscape, golf course, sod farm, nursery, athletic field, (etc.), we would like to assist with your plant health issues. If there is a concern you feel needs to be Other Reports covered more fully, please don’t hesitate to let us know, or email me at turfpath@ missouri.edu or phone at (573) 882-5623. Please enjoy your day of discussion, learn- 1. National Turfgrass Evaluation Program Trials of Cool Season Turfgrasses .................................................................................................46 ing and camaraderie, and we hope you take something back that is useful. 2. National Turfgrass Evaluation Program Trials of Warm Season Turfgrasses...............................................................................................58 3. Evaluation of Preventative Fungicide Applications for Fairy Ring Control on a Creeping Bentgrass Putting Green ....................................65 Sincerely, 4. Evaluating Fungicide Efficacy for Dollar spot and Brown Patch Control on a Creeping Bentgrass Putting Green ......................................67 5. Evaluation of Multiple Fungicide Programs for Summer Disease Control on Fairway and Putting Height Creeping Bentgrass ..................73 Dr. Lee Miller 6. Detection of Chemical Hormesis Caused by DMI Fungicides on Sclerotinia homoeocarpa ........................................................................80 Extension Turfgrass Pathologist 7. Effect of Calcium Fertilizer and Water Status on Tolerance of Creeping Bentgrass (Agrostis stolonifera L.) University of Missouri to Dollar Spot (Sclerotinia homoeocarpa Bennett) .......................................................................................................................................83 Division of Plant Sciences 8. Evaluation of EH1601, NB39020 and NB39051 for Control of Cinquefoil (Potentilla spp.) .........................................................................87 9. Evaluation of EH1587 and EH1545 for Control of Cinquefoil (Potentilla spp.) ............................................................................................89 10. Evaluation of Herbicide Formulations for Control of Wild Violet (Viola spp.) ...............................................................................................91 11. A Study of Billbug Biology............................................................................................................................................................................94 12. Evaluation of Insecticides for Control of Billbug on Zoysiagrass Fairway ....................................................................................................97 Note: Reference to products in this booklet is intended to convey objective, unbiased information and not an 13. Evaluate EH1587 for Control of Common Chickweed ...............................................................................................................................100 endorsement of the product over other similar products with similar results. The use of brand names and any mention or listing of commercial products or services does not imply endorsement by University of Missouri or 14. Differential Responses of Bermudagrass (Cynodon dactylon (L.) Pers.) Genotypes to AOPP Herbicide..................................................103 discrimination against similar products or services not mentioned. Other brand names may be labeled for use 15. Efficacy of Specticle FLO on Control of Lespedeza on a Bermudagrass Lawn .........................................................................................106 on turfgrasses. Individuals who use pesticides are responsible for ensuring that the intended use complies with 16. Performance of Micronutrient Fertilizer MicroPel® ® for Improving Creeping Bentgrass (Agrostis stolonifera L.) Growth........................108 current regulations and conforms to the product label. Be sure to obtain current information about usage regula- tions and examine a current product label before applying any chemical. For assistance, contact your county’s Cooperative Extension agent. 3 Sponsors & Contributors to the 2016 2016 Field Day Sponsors Mizzou Turfgrass & Ornamental Research Program Agrologics* FMC Corporation* Ozark Turf Association* St. Louis, Missouri Philadelphia, PA Branson, Missouri MU Ag Research Center* Gateway Chapter (STMA) ** Ozarks Chapter STMA** Columbia, Missouri St. Louis, Missouri Springfield, Missouri Harrell’s, LLC Agrotain* Pennington Seed* GR Robinson Seed & Service Co GreensPro, Inc.* 720 Kraft Rd, Lakeland, FL 33815 St. Louis, Missouri Greenfield, Missouri 10747 Trenton Ave, St. Louis, MO 63132 Fenton, Missouri Contact: Mickey Lovett Contact: Glenn Kraemer [email protected] A.L. Gustin Golf Course* Harrells LLC* PBI Gordon** [email protected] Columbia, Missouri Kansas City, Missouri 863-687-2774 Lakeland, FL 314-427-0300
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