Abstract
Abstract A 23 year-old apple orchard, varieties ‘Red Delicious’ and ‘Golden Delicious’ was used in this test. Single tree plots, replicated 4 times/variety in a randomized complete block design, were sprayed to runoff (ca 5 gal/tree) with a hydraulic sprayer equipped with a handgun operated at 300 psi. Treatments were applied 14 May, petal fall (PF); 19 Jun, 3rd cover (3C); 3 Jul, 4th cover (4C); 17 Jul, 5th cover (5C); and 31 Jul, 6th cover (6C).
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