Scouting for Dectes Stem Borer in Soybeans
Channel: Pioneer Seeds United States
Date: 2022-08-22

The Dectes stem borer is a small, long-horned beetle whose larvae attack soybeans. It is a native insect species in North America east of the Rocky Mountains. In this video, Jon Olsen, Pioneer Field Agronomist, scouts a soybean field for this pest. Adults can be found in the soybean canopy throughout most of the summer with peak emergence often occurring in late June or early July and beetle activity extending as late as September. As newly hatched larvae tunnel through the petiole toward the main stem, the affected trifoliate will die but remain hanging in canopy for some time. A dead trifoliate surrounded by healthy leaves is a telltale sign that Dectes stem borer is present. 

For more information on how to manage dectes stem borer in soybeans, visit: https://www.pioneer.com/us/agronomy/stem-borer-dectes.html

#Agronomy #PioneerSeeds #Soybeans