Malting barley was planted by a producer located near Edgar, MT on 13 Apr. Plots were 20 ft long and 8 rows wide (1 ft row spacing) and arranged in a RCB design with four replications (Trial 1) and 3 replications (Trial 2). Insecticide applications were made using a backpack, CO2-powered sprayer equipped with TeeJet XR8002VS nozzles, calibrated to deliver 8.2 gpa at 30 psi. Number of CLB eggs and larvae per plant were counted on 3 plants from center rows. Plots in Trial 1 were treated on 17 May when barley was at 2 to 3 tiller stage and evaluated on 1,3, and 11 DAT. No CLB larvae were detected until 28 May. A second trial was conducted to determine insecticide efficacy on CLB larvae. Plots in Trial 2 were treated on 4 Jun when barley was beginning to joint and evaluated on 1,3, 7, and 14 DAT. Data were analyzed using ANOVA and means were separated using DMRT.

Wheat was seeded 14 Jun, at Northern Agriculture Research Center, Havre, MT. Plots measured 16 ft long and 2 rows wide (1-ft row spacing) and were arranged in a RCB design with 4 replications. Insecticide applications were made using a backpack, CO2-powered sprayer equipped with TeeJet XR8002VS nozzles, calibrated to deliver 8.2 gpa at 30 psi. Six of the most recently, fully expanded leaves per plot were selected for sampling. Number WCM per leaf and percent infested plants were determined by visual inspection with the aid of a dissecting microscope. Data were analyzed using GLM and means were separated using LSMEANS.

Three insecticide treatments were evaluated for WSS control on a commercial farm near Dutton, MT. Winter wheat was treated on 19 Jun in 40 X 7 ft plots oriented along the edge of the wheat strip, adjacent to fallow where WSS activity is greater. Treatments were arranged in a RCB design with 4 replications. Insecticide applications were made using a backpack, CO2-pressured sprayer equipped with TeeJet XR8002VS nozzles, calibrated to deliver 8.2 gpa at 30 psi. WSS adults were sampled by taking 10 consecutive sweeps using a standard (15-inch diam) sweep net and larvae were sampled by splitting 20 stems per plot. Data were analyzed using ANOVA and separating means using Tukey.