Soybean stem borer
scouted Sept. 28, 2022
- Scientific Name
- Dectes texanus
- Background
- Soybeans in Union county, variety AS54FXO, were scouted and observed 10% of the field was affected by browning and yellowing, leaf spots, and wilting. These symptoms were widespread in the upper leaves for the most part. Stink bugs on the top plant leaves, pods, eggs, and egg bearing structure for a large stink bug hatch out. The site has a large stink bug infestation.
- Conclusion
- The issue was identified after the sample was analysed, and what was found was that the stem showed signs of Dectes stem borer, also known as soybean stem borer. Soybean stem borers have one generation a year and are active from May through early October. It usually causes indirect yield loss due to lodging or an interaction with other negative environmental conditions, such as drought. These insects are usually more abundant in field edges near weeds or fields adjacent to last year's soybeans. There is no economic threshold for it, but good cultural practices and timely harvest can limit its impacts.
- Resources
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- No resources have been added.
