Abstract
Abstract Cabbage was transplanted 25 Oct in Myakka fine sand on the University of Florida’s Agricultural Research and Education Center in Sanford. A plot consisted of one 30-ft row with 12-inch plant spacing. Each plot row was separated by 2 implanted rows; row spacing was 30 inches. Nemacur 15G 2 lb (AI)/acre was applied pretransplant in a 15-inch band for nematode control. Vegedex 4EC at 4 lb (AI)/acre was applied for weed control. Treatments were replicated in 4 times in a randomized complete block design separated by 25 ft weed-free alleys. Sprays were applied with a COa pressurized sprayer mounted on an Allis-Chalmers model G tractor. Three nozzles were used per row; 1 overhead (TX24) and 2 drop (TX12) 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 3, 10, 18, 22, and 30 Nov, 14, 22, and 29 Dec. In each plot twenty plants were rated for damage on the head and first 4 wrapper leaves on 3 Jan using a scale of 1-6 as in Greene et al., Journal of Economic Entomology, 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.
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