Abstract
Abstract Populations of sorghum webworm and corn earworm were observer 20 Aug feeding on sorghum (pre-milk), planted 20 Jun in Little River County. Insecticide treatments were applied to plots of 50 ft × 1 row. An untreatec buffer row was left between plots. Treatments were arranged in a completely randomized block design with 4 replicates. Insecticides were applied using L backpack sprayer delivering 13.6 gal/acre at 30 psi through a single Teejet TX10 nozzle. Sprays were applied approximately 10-12 inches above the sorghun panicles on 20 Aug between 10 A.M. and 12 A.M. Ten panicles/plot were randomly tagged pretreatment. The effectiveness of the treatments was evaluate! on 21 Aug (24 h postapplication) by selecting 5 of the tagged panicles from each treatment in each replication. The panicles were clipped and twirled in white plastic bucket, and the number of live sorghum webworms and corn earworms was counted. The other 5 panicles were hand harvested 25 Sep fron each row. The panicles were threshed and the grain was weighed. Data were analyzed by conventional analysis of variance and multiple-comparison procedures
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