Abstract
Abstract An experiment was conducted to determine what volumes of water/acre and what insecticides must be used to kill 3rd, 4th and 5th instar tufted apple budmoth larvae. Trees used were ‘Golden Delicious’ pruned to a height of 5.5 m. Treatments were randomized in a complete block design with 4 replicates of single tree plots. Sprays were applied to both sides of the trees and treated trees were separated by buffer trees. Treatments were applied on Jul 31 with sprayers driven at 2 mph. For the Lannate treatments, the amount of chemical/acre was the same but the amount of spray volume/acre varied. Treatments were evaluated by collecting all rolled leaves tree on Aug 5 and determining whether the larvae were live, dead or sick or whether they had pupated or were not present. Larval density was high in all trees.
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