Abstract
Squash was direct seeded for this test. Experimental plots were one row wide and 24 feet long. Treatments were arranged in a RCB design with four replications. All insecticide treatments were tank mixed with DyneAmic at 0.5% v/v. Applications were made on 13, 18 and 25 Aug. Treatments were applied with a CO2-pressurized (50 psi) backpack sprayer calibrated to deliver 30 gpa. Treatments were made with three ceramic hollow-cone nozzles per row (one over-the-top, one on drops on each side of the row). Plots were visually rated for severity of silverleaf symptoms on foliage, which results from SLWF feeding. A 1 to 5 scale was used as follows: 1 = little or no silverleaf (except on older leaves); 2 = silverleaf symptoms minor but apparent (good control); 3 = silverleaf symptoms obvious through most of plot; 4 = silverleaf symptoms moderate to heavy throughout plot; 5 = All or nearly all leaves with severe silverleaf symptoms. Data were subjected to ANOVA and means were separated using LSD (P ≤ 0.05).
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