Caterpillar Control on Cabbage, Spring, 1984

Cabbage was transplanted 21 Feb in Myakka fine sand on the University of Florida’s Central Florida Research and Education Center in Sanfbrd. A plot consisted of one 30 ft row with 12 inch plant spacing. Each plot row was separated by 2 unplanted rows; row spacing was 30 inches. Nemacur 15G 2 lb (AI)/acre was applied pretransplant in a 15-inch band for nematode control. Randox 4EC and Vegedex 4EC both at 3 lb (AI)/acre were applied for weed control. Treatments were replicated in 5 randomized complete blocks separated by 25 ft weed-free alleys. Sprays were applied with a CO2 pressurized sprayer mounted on an Allis-Chalmers Model G tractor. Three nozzles (D3-45) were used per row; 1 overhead and 1 drop on each side. The delivery rate was 50 gpa with a boom pressure of about 50 psi and a speed of 2 mph. Sprays were applied 17, 19, 25, 30, Apr, 8 and 16 May. In each plot on 29 May 20 plants were rated for damage on the head and first 4 wrapper leaves using a scale of 1-6 as in Green et al., Jour, of Econ. Entomol. 62(4):798-800. The percentage of heads that were marketable was based on the frequency of heads with damage ratings of 3 or less.