Now is the time for grain farmers to scout fields at risk for insect infestations and potential pest problems, according to a Purdue Extension entomologist.
Corn planted into grass and wheat in areas of dense growth poses a high armyworm risk. Corn where weedy growth existed could potentially face cutworm troubles, and soybeans first emerging could face bean leaf beetle pressures.
“Corn that has been no-till planted into an abandoned wheat stand or a grass cover crop should be inspected immediately for armyworm feeding,” said Christian Krupke. “Hatched larvae will move from dying grasses to emerging or emerged corn.”
Armyworm feed from the leaf margin toward the midrib and give corn a ragged appearance. In some cases damage may be extensive enough that most of the plant, except the midrib and stalk, is consumed.
“A highly damaged plant may recover if the growing point has not been destroyed,” Krupke said.
If growers find that more than 50% of the corn plants show armyworm feeding damage and there are numerous live larvae less than 1.25 inches long, Krupke said a control method may be necessary.… Continue readingRead More »