[Fhb-update_ma] FHB Update from VA, 05/14/15
FHB Updates - Mid Atlantic SWW Region
fhb-update_ma at scabusa.org
Thu May 14 12:51:49 EDT 2015
Wheat in most of Virginia is either at or beyond flowering. Wet weather and
warm temperatures have increased scab risk over the past week especially on
the Eastern Shore and eastern portions of the Coastal Plain. A scab
fungicide application is recommended for wheat that is flowering in these
areas of the state. If a fungicide is applied for scab, strobilurins should
NOT be used as they may increase DON (vomitoxin) contamination of the grain
if applied after flag leaf. The triazole fungicides Prosaro, Proline, and
Caramba are the most effective fungicides for scab and should be applied at
early to mid-flowering and up to one week later. For maximum efficacy,
fungicides for scab and DON control should be applied with nozzles angled at
a 30 degree angle from the horizontal using both front and back facing
nozzles. This will ensure that the product is applied to the grain head
rather than the leaves or the ground.
--Hillary Mehl, Extension Plant Pathologist, Virginia Tech
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 http://www.scabusa.org
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