Abstract
Abstract The trial was conducted in a 3-acre block of primarily ‘Bartlett’ pear trees near Arendtsville, Pa. Plot size was approximately 1 acre except for control trees. Five ‘Bartlett’ trees were randomly selected within each plot for monitoring. Control trees were five 3-tree plots of ‘Bartletts’ located in an adjacent pear block. Chemicals were applied as complete sprays to both sides of trees with a Myers Mity Mist airblast sprayer calibrated to deliver 50 gal/acre. Application dates and rates were as follows 5 Apr (BB, bud burst); 22 Apr (WB, white bud); 10 May (PF, petal fall); and 2 Jun (IC, first cover). Treatments were evaluated for control by counts of eggs and nymphs at 1- to 2-wk intervals. Counts were made by sampling 10 spur leaves/tree.
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