Effects of Larvin 3.2F and Pounce 3.2Ec on Corn Earworms, Green Cloverworms, and Beneficial Arthropods in a High-Cycle Test, 1986

Abstract

Abstract Larvin 3.2F, applied at three different rates, and Pounce 3.2EC were evaluated to determine their efficacy in controlling corn earworms and green cloverworms in soybeans. ‘Essex’ soybeans were no-till planted in early June after barley harvest on the F. F. Chandler, Jr. Farm in Westmoreland County, VA. A John Deere 6000 high-cycle ground rig was utilized with a 50-ft boom set at 65 psi that delivered 16 gal of finished formulation per acre. Larvin 3.2F was applied at rates of 4 oz, 6 oz, and 10 oz of formulated material per acre and Pounce 3.2EC was applied at 4 oz per acre on 23 Aug ‘86. Individual plots were 100 ft wide by the length of the field (about 5 acres). Each sprayed strip was partitioned into four replications (edge, middle, far middle, far end). Individual treatments were evaluated 1-, 3-, 7- and 14-days after application by comparing the number of insect pests and predators per 25 sweeps (using a 15-inch diameter sweep net) in the treated plots to those in the untreated checks.