Efficacy of Selected Insecticides for Control of Cabbage Looper in Cauliflower
Abstract Cauliflower was direct seeded into on 21 Sep at the Yuma Valley Agricultural Center, Yuma, Az. Each plot consisted of four, 30-ft-long beds spaced 42 inches apart and bordered on each side by two untreated beds. Plots were arranged in a CRB design with 4 replicates. Foliar applications were made on 10 and 14 Oct with a hand-held CO2 sprayer operated at 50 psi, delivering 20 gpa. Spreader-sticker (Kinetic) was included in all spray treatments at a rate of 0.125% of the total volume. Insecticide efficacy was determined by counting the total number of small (1 st and 2nd instars) and large (>2nd instar) CL on 5 randomly selected plants replicate. Data were analyzed as a 1-way ANOVA using a protected LSD F test (P = 0.05) to distinguish treatment mean differences.