Abstract
Cotton was planted on a silt loam soil in Grenada, MS on 27 April 2007. Plot size was 4 rows by 40 ft long planted on 38 inch centers. Statistical design was a RCB with 4 replications. Insecticides were applied with a tractor mounted sprayer calibrated to deliver 10.0 gpa at 65 psi through TX-6 Hollow Cone nozzles (2 per row). All treatments were applied on 6 Jul. All treated areas received 0.5 inches of rainfall within 10 min of application. Estimates of aphid density were determined by counting aphids on the bottom side of leaves on 5 randomly selected leaves per plot 3 nodes down from the terminal 3 DAT. Data were analyzed with ANOVA and means were separated using a Fisher’s Protected LSD (P ≤ 0.05).
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