Evaluation of Seasonal Insecticide Programs Against New York Apple Pests, 2014

The objective of this test was to determine the effectiveness of seasonal spray programs against a variety of apple pests in a research orchard located at the NYS Agricultural Experiment Station in Geneva, NY. Cultivars in the block were “Empire,” “Cortland,” “Jonagold,” and “Delicious.” Treatments, including an untreated check, were replicated three or four times in four-tree blocks arranged in an RCB design. Treatments were applied at various rates and timings from bud stage “tight cluster” (6 May), “pink” (13 May), or “petal fall” (27 May) and then approximately every 14 d depending on weather conditions until 19 August (Table 1). Seasonal insecticide programs were applied with a Durand-Wayland airblast sprayer at 100 gpa. Damage was assessed from foliage or fruit on the tree for OBLR on 19 June and 11 July. Feeding damage from the IL complex of CM, OFM, and LAW was assessed on 27 June, 11 July, and 29 July. PC …