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Abstract
Abstract Fenoxycarb was compared with Lorsban for control of pandemis leafroller larvae in post-bloom sprays. Both materials were applied in a dilute spray to the point of drip (approximately 400 gal/A) using a hand gun sprayer at 400-500 psi to a block of 7-year-old apple trees containing 33 trees each. Treatments were applied about 2 wk after petal fall on 20 May when leafroller larvae were predominantly in the 4th and 5th instar. Treatments were evaluated on 30 Jul when larvae from summer generation were present. Insecticide treatments were compared with an untreated block of trees adjacent to treated areas. Ten trees were randomly selected from each block and examined for live larvae. Mites were sampled bi-weekly from mid-June through mid-Sep. Fifty leaves (5 per tree) were selected at random from each block, returned to the laboratory, brushed and mites counted. Mite densities are presented as mean mites per leaf for the growing season.
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