Abstract
Abstract The experiment was conducted on a 4-year-old commercial stand in Grand Terrace, CA. Experiment design was a randomized complete block with 3 replications. Each plot contained 4 trees. Average tree height was 5.5 ft. Treatments were applied with a Solo® knapsack sprayer using a hollow cone nozzle at 32 psi, and a 100 gal/acre spray rate. Nantucket pine tip moth damage was estimated by randomly selecting 40 terminals per tree (10 in each compass direction) and recording the number of damaged and healthy tips. Insecticides were applied on 2 Jun, 5 Aug, and 30 Sep, and damage evaluations were made on 11 Jul, 9 Sep and 28 Oct.
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