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06
Jul
2018
Corn and Grain Sorghum Weekly Update – July 6, 2018
Author: Chuck Capps, Corn and Grain Sorghum Research Verification Program Coordinator

By Chuck Capps, Corn and Grain Sorghum Research Verification Program Coordinator

All of our irrigated fields are being irrigated this week except for Mississippi County field which received almost 2” rain.  Common rust has been found in all our Corn Research Verification Program fields but in very small amounts.  Southern rust has not been found in the U.S. as of Thursday afternoon.  We found a small amount of Diplodia leaf spot and Northern corn leaf blight in the Desha County CRVP this week and one leaf of Northern corn leaf blight in the Arkansas County CRVP field.  This is the cleanest corn crop I have seen disease wise at this point of the growing season in a long time.  We do have ear worms feeding on tips of ears as usually for this time of the season.

The two GSRVP fields have headed in significant portions of the fields and some heads have begun to flower.  The Cross County field in Cherry Valley is more consistent across the field due to being irrigated.  No sorghum midge were found this week and very few sorghum head worms.  We saw a handful of stink bugs which were primarily rice stink bugs in our sampling.   Very light insect pressure so far.

See the linked pdf for field-specific information:  CGSRVP Update 7-6-18


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