The information presented here about common diseases, insect pests and beneficial species was developed from the publication A Pocket Guide for IPM Scouting in Michigan Apples by David Epstein, Larry J. Gut and George W. Sundin. This is a pocket-sized guide for reference in the orchard and can be purchased from MSU Extension (Publication E-2720. Also available in Spanish E-2720SP).
For reference: Tree Row Volume Chart
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