Potato Insect Control with Systemic Insecticides, Larimer County, Colorado, 1985

‘Norchip’ potatoes were planted 8 May, ’85 at the Colorado State University Horticulture Research Center, Larimer County, CO. Plots were 6-row, 25 ft in length, randomized in a complete block design with 4 replications. Treatments were applied post-emergence 14 Jun by banding the insecticides 4 to 6 inches along the sides of the planting. Plants were less than 6 inches at the time of treatment and treatments were incorporated immediately post-application. Potato psyllid, green peach aphid and onion thrips were sampled by examining 35 leaves/plot. CPB larvae were counted 19 Aug by counting all larvae on center rows of each plot.