Apple, Concentrate Insect Airblast Evaluation, 1996

Experimental and registered insecticides were applied alone or in various combinations to 3-tree plots in a randomized block design consisting of 2 replicates of ‘Golden Delicious’ and 2 replicates of ‘Yorking’ with a buffer row between plots. Trees were planted at a spacing of 20 X 30 ft and were 21 yr old. Samples were taken from the center tree in each plot. Experimental sprays were applied with a Friend Airmaster ‘309’ calibrated to deliver 100 GPA at 2.0 mph. The 2nd application of CGA-59205 35WP treatments and the Comply 40 WP treatment were timed for 250° degree days (base 50°F) after the first emergence of CM adults during the first brood. All applications were complete sprays. A routine schedule of fungicides (Benlate 50DF, Dithane 75DF, Nova 40WP, and Ziram 76WP) was maintained throughout the experiment.