Mississippi State University has published the “2016 Insect Control Guide for Agronomic Crops” in a free, downloadable version. A print edition will be available at county Extension offices in January.
The updated guide has removed pyrethroid insecticides for bollworm control for all crops because of resistance and poor control.
The recommendations are not new for Mississippi but have only been verbal until now.
Based on a large, multi-state project, researchers also have added a dynamic threshold for bollworms, also known as podworms, in soybeans. The threshold takes into account commodity cost and treatment costs for bollworms in reproductive-stage soybeans.