Colorado Potato Beetle Control on Potatoes With Foliar Insecticide Sprays, 1996

Abstract

Abstract ‘Red Norland’ potatoes were planted in 20 foot rows on 8 Apr, ‘96. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a RCB design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gpa at 30 psi. Treatments were applied 26 May. Novodor plots were sprayed 24 and 26 May. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae, egg masses/10 plants and the % defoliation were recorded. Yields were taken on 28 Jun from 20 feet of row.