Sandhill Cutworm Control, 1984

A locally severe outbreak of sandhill cutworm near Royalton, Mn permitted this trial. The soil type was glacial outwash sand. Moisture was adequate with air temperature min-max 38°F and 75°F. Plot size was nine 30-inch rows 50 ft long. A randomized complete block experimental design was used. Ten gal total material per acre was broadcast on undisturbed soil surface with no posttreatment cultivation. Corn height was 8 inches leaf extended on treatment date of 30 May ‘84. Corn stand loss was 82% before treatment and was uneven in the plot area. Stand counts were taken before and after treatment. Numbers of dead larvae per 6 rows × 25 ft long were counted 24 h posttreatment and are reported.