Moldy core and core rot can be serious problems in exported apples, because the symptoms usually can’t be seen from the outside when the fruit is shipped. Dr. Maryna Serdani, plant pathologist at Oregon State University’s Mid-Columbia Agricultural Research and Extension Center in Hood River, said that in most apple growing regions around the world where Red Delicious and Fuji are produced, moldy core and core rot can affect between 5 and 8 percent of the fruit. When shipments are rejected in export markets, significant financial losses can result. Moldy core (also known as dry core rot) begins to develop […]