Control of Southern Armyworm on Fresh Market Tomatoes, Fall 1996

Transplants were set 4 Sep, 18 inches apart on 8-inch-high beds of EauGallie fine sand covered with white polyethylene mulch. Each plot consisted of a single 15-ft row with rows on 5-ft centers. Treatments were replicated 4 times in a RCB design and were applied with a 2.5-gal, hand-held CO2-powered sprayer on 30 Sep, 14, 21, 28 Oct, 4, 18 Nov, and 3 Dec. The sprayer was operated at 60 psi and delivered 60 gpa the first two applications, 90 gpa the third application and 120 gpa the last four applications using a single nozzle fitted with a D-5 disk and #45 core. Fruit were harvested on 14, 26 Nov, and 11 Dec. The number and weight of un-damaged fruit and fruit damaged by armyworm larvae were determined.