Two pruning demonstrations have been scheduled this month to help orchardists understand how to prune Manchurian crab apple trees in order to be eligible to export apples to China. The Chinese apple market, closed between 2012 and 2014 due to fruit infection caused by two postharvest rots, recently reopened. The two pathogens survive in the orchard on cankered twigs and fruit of Manchurian crab apple and cause commercial fruit infection in the orchard, which leads to development of speck rot and sphaeropsis rot in storage. The work plan for exporting U.S. apples to China requires Manchurian crab apple pollinizer trees […]