Abstract
Abstract Experimental sprays were applied to non-replicated 0.4 acre plots consisting of the cultivars Bartlett, Anjou, and Bosc (6 years old). Treatments were applied with a handgun from a truck-mounted hydraulic sprayer at 375 psi, with the exception of the first Lorsban treatment, which was applied with a Myers Mity Mist sprayer calibrated to deliver 50 gpa. Treatments were evaluated for pear psylla control by counts of eggs and nymphs at 1 to 2-wk intervals on the cultivar Bartlett. Counts were made by sampling 10 mid-terminal or spur leaves from 4 trees randomly selected in each plot. PP pressure was moderate throughout the season.
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