Ag Weather Forum
Freeze Threat Details For Wheat
The following table has details on spring freeze damage to winter wheat depending on the wheat stage and temperatures. Widespread freeze warnings are in effect for southern Plains wheat areas through Tuesday morning, April 15.--Bryce
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Details come from a Kansas State University bulletin, with research by James P. Shroyer, Merrel E. Mikesell, and Gary M. Paulsen.
STAGE INJURY TEMPERATURE YIELD EFFECT
P[L1] D[0x0] M[300x250] OOP[F] ADUNIT[] T[]
(Two Hours)
Jointing 24 F (-4 C) Moderate to Severe
As of Sunday April 6, 16 percent of Kansas wheat and 52 percent of Oklahoma wheat were in the joint stage.
Boot 28 F (-2 C) Moderate to Severe
Heading 30 F (-1 C) Severe
As of Sunday April 6, 9 percent of Texas wheat was in the heading stage.
Flowering 30 F (-1 C) Severe
Milk 28 F (-2 C) Moderate to Severe
Dough 28 F (-2 C) Slight to Moderate
(CZ)
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