ASSESSMENT OF INSECTICIDES AGAINST A COMPLEX OF HEMIPTERAN PESTS IN SUGARCANE, 2012

Five insecticides were evaluated for control of the Saccharosydne saccharivora, yellow sugarcane aphid (YSA), and sugarcane aphid (SA) in a field of sugarcane cultivar HoCP 96-540, 1 stubble, located near Cheneyville, LA. The experiment was arranged following RCBD with 4 blocks and 4-row plots (25 ft each). Pest levels were assessed by counting Saccharosydne saccharivora, YSA, and SA, on the 3 or 4 leaf down from the whorl on 4-5 randomly selected plants on each of the 2 center rows of each plot. Pre-treatment data collection was conducted on 23 Jul. On 24 Jul, insecticides were applied using a CO2-pressurized backpack sprayer calibrated to deliver 10 gpa at 30 psi. A 2-row boom equipped with 8 TeeJet TP11001VS nozzles spaced 18 inches was used to spray insecticides approximately 2 ft above the canopy. No rainfall was recorded within 48h of treatment applications. Insecticide efficacy was evaluated at 4, 12, and 24 days after treatment (DAT). Data from each date were analyzed separately using linear mixed models (Proc GLIMMIX, SAS Institute) with means separated using Tukey’s test (α = 0.05).