The organic grower has available only a fraction of the disease-suppressive spray products that a conventional grower can use. Properly pruning fruit trees has more than one benefit for the plants and the grower, but, arguably, the most important benefit for organic growers is management of diseases. Pruning Other Fruit Trees for Disease Control.Black Rot and Other “Summer Rots” of Apples.
Pruning strategies for apples and pears are contrasted with techniques used for other stone fruits, such as plums, peaches, and cherries. It explains how to remove diseased wood and prune branches and discusses how this can control spread of disease and help prevent hosting of pathogens that cause rot. This publication explains why pruning is an especially important disease-management tool for organic tree fruit growers. Ames, NCAT Horticulture Specialist Abstract
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