Abstract
Transplants were set 8 Sep, 18 inches apart within the row on 8-inch-high and 32-inch-wide beds of Myakka fine sand covered with white polyethylene mulch. Each plot consisted of a single 18-ft long row with rows spaced 5 ft apart across the beds and 6.5 ft down the beds. Treatments were replicated four times in a randomized complete block design and were applied with a 2.5 gal, hand-held CO2-powered sprayer at 60 gpa on 30 Sep, 14 Oct, 10 Nov, and 1 Dec. The sprayer was fitted with a D-5 disk and #45 core and was operated at 60 psi. The numbers of armyworm larvae and predators were evaluated on the middle 10 plants of each plot by either examining all leaves of each plant or by shaking the plants and counting dislodged insects on the soil mulch. Sampling was conducted 3-4 days after treatments (DAT) for selected treatments and 6-14 DAT for all treatments. Fruit were harvested on 21 Nov and 7 Dec. The number and weight of undamaged fruit and the number of fruit damaged by armyworm larvae were determined and were totaled over both harvest dates.
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