NDSU Extension Entomologist Jan Knodel says grasshopper nymphs are showing up in threshold numbers in areas that missed the recent rains. “Mainly near Benson, Steele and Traill counties, there are high populations of young grasshoppers. We do recommend that you get out and look at your field because they are easier to control when they’re young.” Knodel encourages farmers to scout along field edges. “There’s a threshold of 50 to 75 nymphs per square yard in the ditches or non-crop areas and 30 to 45 nymphs per square yard in the field.”
Subscribe to RRFN
Get a weekly digest from RRFN to stay up-to-date on all the latest news in agriculture.