Abstract
Abstract Field plot studies were conducted to measure the efficacy of Capture(R) insecticide/miticide alone and in combinations for the control of spider mites in cotton. “D&PL 41“ cotton was planted 15 Apr in rows spaced 40 inches apart. Plots used in this study were 6 rows wide and 150 ft long (0.07 A) and were irrigated on 4 Jul and 12 Jul. The experimental design was a randomized complete block with 4 replications of 4 treatments, including an untreated check plot. Foliar miticide treatments were topically applied using a ground sprayer calibrated to deliver 10 gal of solution per acre through two 6X hollow cone nozzles per row at 30 psi and 2 mph. One spray application was made on 8 Aug. Mite density levels were estimated in the field on 1 Aug (pretrt), 14 Aug, 16 Aug, and 20 Aug (at 6, 8, and 12 days posttreatment, respectively) by counting the number of adult female mites on 10 infested leaves per plot with the aid of a 5X lens. Orthene(R) insecticide was applied on 21 Jul, 3 Aug, and 16 Aug to eliminate western flower thrips as a factor in miticide evaluation. During the experiment, the plots received 2.2 inches of rain on 7 Jul, 0.2 inch on 8 Jul, 1.5 inch on 3 Aug, and 1.8 inch on 10 Aug.
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