Apple, Control of the Obliquebanded Leafroller with Conventional Insecticides in Summer, 1993

Different insecticides were evaluated for their ability to control OBLR larvae of the summer generation. The test was conducted in an apple orchard near Milton-Freewater, OR. Trees were 2-yr-old ‘Delicious’ on dwarfing roots. The orchard was ditch irrigated. Treatments were applied to live-tree plots replicated five times in a RCBD. All treatments were applied on 6 Jul with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gpa. The post-treatment evaluation was made on 29 Jul. Each tree was examined and the no. of live leafroller larvae recorded.