Southwestern Corn Borer Traps: June 29, 2018
By Jeff Gore, Research and Extension Entomologist, Angus Catchot, Extension Entomologist, Don Cook, Entomologist and Erick Larson, State Extension Specialist - Grain Crops
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Southwestern corn borer trap counts were up this week in Coahoma county. As a reminder, our threshold for foliar sprays on non-Bt corn is to spray one week after trap counts exceed 100 per trap from tassel to full dent. Once corn reaches the dent stage, it is safe from yield losses from corn borers. At least one trap exceeded the threshold this week, so non-Bt corn in that area may need treatment if it has not reached the dent stage.
Historically, southwestern corn borer populations generally peak around the second week of July in Mississippi, so it will be important to continue to monitor traps and corn for corn borers.
By Jeff Gore, Research and Extension Entomologist, Angus Catchot, Extension Entomologist, Don Cook, Entomologist and Erick Larson, State Extension Specialist - Grain Crops
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