Please refrain from downloading and saving posters in the FHB Forum Virtual Poster room. Not all authors have agreed to share their posters. If you would like a copy of a poster please contact the Corresponding Author.

Related Posters

Poster # 108
Poster Title: Fusarium Head Blight Management Coordinated Project: Integrated Management Trials 2024
Authors: Isaack Kikway 1, Alyssa Collins 2, Alyssa Koehler 3, Andrew Friskop 4, Carl Bradley 5, Christina Cowger 6, Damon Smith 7, Darcy Telenko 8, Douglas Higgins 9, Guy Padgett 10, Heather Darby 11, Heather Kelly 12, Juliet M. Marshall 13, Kelsey Andersen Onofre 14, Madalyn Shires 15, Mandy Bish 16, Martin Chilvers 17, Nidhi Rawat 18, Paul Esker 19, Santiago Mideros 20, Stephen Wegulo 21, and Pierce A Paul 1

1. The Ohio State University/OARDC, Wooster 44691.
2. The Pennsylvania State University, Manheim, PA 17545.
3. The University of Delaware, Georgetown, DE 19947.
4. North Dakota State University, Fargo, ND 58102.
5. University of Kentucky, Princeton, KY 42445.
6. North Carolina State University/USDA-ARS, Raleigh, NC 27695.
7. University of Wisconsin-Madison, Madison, WI 53706.
8. Purdue University, West Lafayette, IN 47907.
9. Virginia Tech, Suffolk, VA 23437.
10. Louisiana State University Ag Center, Baton Rouge 70803.
11. University of Vermont and State Agricultural College, St. Albans, VT 05478.
12. The University of Tennessee at Knoxville, Jackson, TN 38301.
13. University of Idaho, Aberdeen, ID 83210.
14. University of Kansas State University, Manhattan, KS 66506.
15. South Dakota State University, Brookings, SD 57007.
16. University of Missouri, Columbia, MO 65211.
17. Michigan State University, East Lansing, MI 48824.
18. University of Maryland, College Park, MD 20742.
19. The Pennsylvania State University, University Park, PA 16802.
20. University of Illinois, Urbana, IL 61801.
21. University of Nebraska-Lincoln, Lincoln, NE 68588;
Corresponding Author: PH: 330.263.3842; Email: paul.661@osu.edu
Presenting Author:   Isaack Kikway

Abstract


Integrated management approaches such as good agronomic practices, resistant cultivars, and chemical control are being employed for managing Fusarium head blight (FHB) and deoxynivalenol (DON) contamination of wheat grain. Demethylation inhibitor (DMI) fungicide active ingredients (AI) such as prothioconazole, metconazole, and tebuconazole have historically been the most effective for FHB and DON control. The current industry standards for management of FHB and DON are Prosaro, a premix of two DMI AIs (tebuconazole and prothioconazole) and Miravis® Ace, a premix of the DMI Propiconazole and the SDHI  Pydiflumetofen. Questions are being as whether newly registered products such as Prosaro Pro (a premix of the DMI tebuconazole and prothioconazole and the SDHI Fluopyram) and Sphaerex (a premix of the metconazole and prothioconazole) will be just as or more effective than the industry standards in integrated management programs. During the 2024 growing season, separate replicated plots of susceptible (S), moderately susceptible (MS), or moderately resistant (MR) cultivars were treated with Prosaro, Miravis Ace, Prosaro Pro, or Sphaerex at Feekes 10.5.1 or left untreated, and subsequently inoculated with spores of Fusarium graminearum. Mean FHB index (IND) and DON in S_CK ranged from 0 to 74% and 0 to 3.2 ppm, respectively. Relative to the non-treated susceptible check (S_CK), all fungicide x cultivar treatment combinations resulted in significantly lower for mean IND and DON. Averaged across the environments, the combination of a MR cultivar and a fungicide treatment showed significantly lower mean IND and DON than all treatments applied to S cultivars. Percent control (C) was estimated for IND and DON for each cultivar x fungicide program combination relative to S_CK. Averaged across environments, the combination of an MR cultivar and a fungicide treatment resulted in the higher C values for IND and DON than treatments applied to an S cultivar. For instance, across the tested fungicide programs, C for IND and DON ranged from 85.7 to 90% on MR cultivars and 69 to 82% on MS cultivars, compared to 56 to 70% on S cultivars. Finding from this study conducted under different agronomic conditions provide useful information on the efficacy of the new fungicide mixtures relative to the industry standards when used as part of integrated management programs to control FHB and DON.

ACKNOWLEDGEMENTS AND DISCLAIMER: This material is based upon work supported by the U.S. Department of Agriculture, under Agreement Nos. 59-0206-8-195, 59-0206-0-126; 59-0206-9-120, 59-0206-0-125; 59-0206-6-008, 59-0206-0-153; 59-0206-5-007, 58-6070-9-019, 59-0206-0-184; 59-0206-8-192, 59-0206-0-115; 59-0206-8-189, 59-0206-0-138; 59-0206-5-005, 59-0206-9-122, 59-0206-0-139; 59-0206-8-190, 59-0206-0-141; 59-0206-6-015, 59-0206-0-155; 59-0206-4-016, 59-0206-9-117, 59-0206-0-132; 59-0206-8-210, 59-0206-0-140; 59-0206-8-199, 59-0206-0-122; 59-0206-8-211, 59-0206-0-144; 59-0206-0-173; 59-0206-0-188; 58-2050-8-013, 59-0206-0-175; 59-0206-6-010; 59-0206-8-189; 59-0206-0-179; 59-0206-6-012, 59-0206-0-189; 59-0206-9-123, 59-0206-0-118; 59-0206-6-014, 59-0206-0-191; 59-0206-9-009, 59-0206-0-185; and 59-0206-8-187, 59-0206-0-131. This is a cooperative project with the U.S. Wheat & Barley Scab Initiative. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S. Department of Agriculture.