[Fhb-update_ma] FHB Update from DE, 05/14/19

[FHB Updates - Mid Atlantic SWW Region]

Wheat in lower Delaware has finished flowering and wheat in Kent and New
Castle counties range from head emergence through flowering. The entire
state is at high FHB risk. If your wheat is flowering (yellow anthers
visible on 50% of main tillers), it is advised to make a fungicide
application for management of FHB. The advised window for fungicide
application is flowering until 4-5 days after flowering. Fungicides for FHB
include Caramba, Miravis-Ace, and Prosaro. Fungicides containing
strobilurins should be avoided at this growth stage. Applications should be
made at the full recommended rate in 15 gallons per acre (gpa) with 300-350
um droplet size for ground application and 5 gpa recommended for aerial
application. Spray nozzles should be pointed toward the grain heads (30-45°
angle from horizontal), with forward and backward mounted nozzles or nozzles
with a two directional spray (Twinjet). 

--akoehler, Extension Plant Pathologist, University of Delaware

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