Integrated Management of Lepidopterous Pests on Cabbage, 1990

Abstract

‘Rio Verde’ cabbage seeds were incorporated into a germination mix (Pro-Mix) and direct seeded into a Rockdale soil at the University of Florida’s Tropical Research and Education Center on 6 Feb 1990. The soil was fumigated with Terr-O-Gas (75% methyl bromide, 25% chloropicrin; 246 kg/ha) and covered with white on black plastic mulch on 30 Jan. Plants were spaced 0.3 m apart within rows and 0.76 m apart between rows on 1.8 m-center beds. Fertilizer (1680 kg/ha of granular 6:12:12) was applied and incorporated into the soil on 25 Jan. Goal 2 EC was applied (0.56 kg (AI)/ha) between the beds on 2 Feb for weed control. Plants were irrigated 4 h/day using a turbo T-tape drip irrigation system (model 40) which delivered 5.0 liters of water/m of dripline/h. Eight treatments and a nontreated check were compared. Treatments tested were alternate week applications of an insect growth regulator, CME 13406 (0.033 kg (AI)/ha), in combination with Bacillus thuringiensis var. kurstaki, Cutlass WP (2.2 kg/ha) or Dipel 2 X (0.56 kg/ha) rotated with B. thuringiensis var. kurstaki (Cutlass WP or Dipel 2 X); biweekly applications of CME 13406 in combination with B. thuringiensis var. kurstaki (Cutlass WP or Dipel 2 X); biweekly applications of CME 13406; and weekly application of Cutlass, Dipel, and Phosdrin 4 E (0.56 kg (AI)/ha) in combination with Dipel 2 X (0.56 kg/ha). Treatments were replicated 4 times in a randomized complete block design.