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22
Jun
2020
Southwestern Corn Borer Trap Catches – June 19, 2020
Author: Glenn Studebaker, Extension Entomologist/IPM Coordinator

By Glenn Studebaker, Extension Entomologist/IPM Coordinator

Trap catches remain relatively low for all counties with the exception of Lawrence County.  One trap hit a peak of over 100 moths per trap this week. Growers with non-Bt corn in this area are encouraged to check their fields for eggs and/or larvae. In previous years, this county has experienced very low populations of southwestern corn borer, hence the importance of monitoring even if your area has a history of low pressure. Other areas of the state are not seeing high numbers at this time. However, we usually begin to see numbers increase around the last week of June or first week of July. We generally don’t get too worried until we see numbers reaching 100 or more moths per trap per week. Recommended insecticides and rates can be found in the corn section of MP144 Insecticide Recommendations for Arkansas (mp144.uaex.edu).

Trap catches by county can be seen in the PDF below:

“This work is supported by the Crop Protection and Pest Management Program [grant no. 2017-70006-27279/project accession no. 1013890] from the USDA National Institute of Food and Agriculture.”


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