By: Stephanie Karhoff
For the sixth week of monitoring there were 7 moths per trap (21 moths in a total of three traps). As we approach peak flight, make sure to scout for eggs or larvae by choosing at least 20 consecutive plants in 5 random locations and inspecting the uppermost 3–4 leaves for eggs, as well as the silks for larvae if tassel has emerged. Be sure to inspect different areas of the field that may be in different growth stages. For field corn, if 8% or more of the plants inspected have eggs or larvae, consider treatment. For sweet corn, consider treatment if eggs or larvae are found on >4% of plants for the processing market or on >1% of plants for fresh-market. You can learn more about this pest by clicking here to access the OSU Extension Western Bean Cutworm Factsheet.
Continue reading Williams County WBC Monitoring Update – Week #6