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USA - An unlikely pest impacting northern soybean fields: black cutworm
USA
February 15, 2021
Cutworm is most often found feasting on corn, cotton and tobacco plants, but it can also cause significant damage to soybean fields. If soybean fields have weed-ridden prevent plant areas, those areas can attract cutworms and result in infested soybean acres.
“The surface doesn’t tell the whole story, and digging up some of the dead plants won’t tell the whole story either,” said Larry Osborne, a Pioneer Field Agronomist in South Dakota. “We need to look at the stems of plants that appear to be healthy. You want to look at those roots.”
Farmers should scout fields that offer a potential food source for larvae. When surveying fields, farmers should use a small tool, such as a garden fork, to gently look at the soil around the plant. While digging for larvae, working with smaller tools allows for better viewing of the hypocotyls and roots. If larvae are spotted, insecticide seed treatments at high rates may provide some control. Broadcast pesticide or bait application may be used as a rescue treatment and a replant may be warranted if extensive feeding and infestation has occurred.
More news from: Corteva Agriscience
Website: http://www.corteva.com Published: February 15, 2021 |
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