Wheat Scab Update-April 23, 2018

— Written By and last updated by

For wheat flowering now, scab risk is low across North Carolina due to recent dry weather. Rain predicted for April 23-28 will make conditions more conducive to scab for wheat flowering in the coming 10 days. However, considering the amount of moisture predicted, risk for wheat flowering later this week and next week will likely remain low in most of North Carolina, with the likely exception being the Tidewater area. If your wheat is flowering in the next 2 weeks, monitor scab risk closely, especially if you have susceptible varieties.

Do not apply a strobilurin-containing fungicide after flag leaf stage. For scab, the most effective products are Caramba, Prosaro, and Proline. Aerial application may be profitable. For ground application, rear- and forward-facing nozzles should be angled down 30 degrees from horizontal.

–Christina Cowger, Plant Pathologist, USDA-ARS and North Carolina State

For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu

For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org

Written By

Dr. Christina CowgerSmall Grains Pathologist (919) 513-7388 Christina.Cowger@ars.usda.govAgricultural Research Service - NC State University

Contributing Specialist

Photo of Lindsey Thiessen, N.C. Cooperative ExtensionDr. Lindsey ThiessenAssistant Professor & Extension Specialist (919) 515-2730 (Office) ldthiess@ncsu.eduEntomology & Plant Pathology - NC State University
Updated on Apr 24, 2018
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