​​Management of Caterpillar Pests in Soybean

March 2019 | 28 min., 55 sec.
by Gus Lorenz
University of Arkansas

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Summary

Caterpillar pests of soybean, particularly the corn earworm, Helicoverpa zea, and the soybean looper, Chrysodeixis includens, are arguably the most important insect pests of soybean. In this presentation we will discuss why these pests are a problem, including insecticide resistance and overlapping generations. Discussion will center on a new dynamic threshold for determining when to spray and selecting the right insecticide to achieve effective and economical control. We will also discuss other control tactics which can reduce cost of control including cultural tactics and a Nucleopolyhedrovirus (NPV) for corn earworm and another for soybean looper which will provide control of these pests which are much cheaper than synthetic pesticides. Strict guidelines on how to optimize control with NPV will be discussed. This presentation should provide practitioners with new information on control of these important economic pests and provide information on new and developing products to enhance pest management.​

About the Presenter

Gus LorenzGus Lorenz began as a county agent in Jefferson County then served as Area Soybean Specialist, then Area Soybean and Wheat Specialist, and an Area Cotton Specialist. He returned to school to get his PhD which he completed in 1995. After completion of his PhD, he became an Extension Entomologist and IPM Coordinator. In 2005, he was promoted to Associate Department Head for Extension Entomologists, in 2017 he became Associate Department Head for Extension Entomology and Plant Pathology. His primary responsibilities include major row crops. Gus has worked for the University of Arkansas for 34 years.​

Contact Information:
Email: glorenz@uaex.edu

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