Can pollinizer pmning reduce fruit rot?

摘要

Manchurian crab apples are thought to be sources of disease inoculum. Fruning of crab apple pollinizers is being explored as a way to reduce the incidence of two posthar-vest fruit diseases that have closed the Chinese market to U.S. apples. The twofungal diseases are Sphaeropsis pyriputrescens (known as sphaeropsis rot) and Phacidiopycnis washingtonensis (speck rot). Both were discovered in Washington State within the past decade and have since been reported in British Columbia, Canada, and New York. The fungal spores that infect fruit originate from cankers on dead, dying, or weak wood.