Abstract
Abstract A full season study was conducted at the Plant Science Research Farm of the Mississippi Agriculture and Forestry Experiment Station, Mississippi State, MS. Plots were planted to ‘Stoneville 825’ on 7 Jun. All treatments were replicated 4 times and arranged in a randomized complete block design. Each plot was 4 rows (38-inch rows) by 50 ft with 2 buffer rows between plots. Insecticides were applied with a boom-type sprayer calibrated to deliver 6.1 gal/acre total volume at 30 psi through 2 TX-4 nozzles per row. Applications were made 26 Jul, 2, and 14 Aug. All plots were sprayed for boll weevil suppression on 22 and 31 Aug, 12, 20, and 28 Sep, and 3 Oct with Guthion 2L (0.25 lb (AI)/acre). Insect populations and plant damage were monitored on 4 and 16 Aug by making 5-ft whole plant counts in each plot. Yield data were taken on 21 Nov by mechanically harvesting the center 2 rows of each plot.
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