Figure 1. Dectes stem borer larvae.
Figure 2. Adult Dectes stem borer.
Figure 3. Egg scars on a soybean stem.
Figure 4. Dectes stem borer larva tunneling inside a soybean stem.
Figure 5. Approximate area of Dectes stem borer infestation in soybean based on Pioneer Field Agronomist observations, October 2018.
Figure 6. Soybean stems girdled and tunnels plugged with frass.
Figure 7. Lodging due to stem girdling by Dectes stem borer larvae.
Figure 8. Dead trifoliate from Dectes stem borer larva tunneling.
Cultural Practices
Insecticides
Author: Mark Jeschke
December 2018
The foregoing is provided for informational use only. Please contact your Pioneer sales professional for information and suggestions specific to your operation. Product performance is variable and depends on many factors such as moisture and heat stress, soil type, management practices and environmental stress as well as disease and pest pressures. Individual results may vary.