Abstract
Abstract Cotton was planted 9 Apr on rows spaced 40 inches apart. All cotton was treated 2, 4, and 6 wk prior to the experimental period with a mixture of cypermethrin and carbaryl to engender mite infestation. Mite densities in two untreated check plots and 3 acaricide-treated plots were compared in a randomized block design with 4 replications. Plots were 6 rows wide × 45 ft long, with spray applied to the inner 2 rows. Chemical applications were made with a high-clearance, self-propelled sprayer equipped with 3 TX-3 hollow-cone nozzles/row and calibrated to deliver 8.6 gal/acre. Acaricide treatments were applied 15 and 24 Aug and 4 Sep. Mite density was determined prior to each application of acaricide treatments (except for the 4 Sep application) and also 1 wk following the final treatment application. Mite density was estimated by inspecting 10 randomly selected (but visually chlorotic) leaves/plot with a hand lens and counting live (mobile) mites. Mite count data were analyzed by conventional analysis of variance and multiple comparison procedures. Yield data were not collected.
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