Control of Grasshoppers on Lawns, Bozeman, Montana, August 1978

Plot size for each rate (2 and 4 oz ai/acre) of 3 candidate insecticides was 0.01 acre of lush meadow grass mowed to theheightof the typical lawn. There plots were divided into 4 equal 0.0025-acre subplots, each representing one replication. A knapsack compressed air sprayer was used to treat each subplot with insecticide diluted in one quart of water (i.e., 100 gal/acre). Immediately after spraying, a 1/2 yd2 cage was secured on the still-wet grass in each subplot, and 20 adult grasshoppers were placed into each cage. There was an untreated check for each of the 3 materials.