WSU CAHNRS and Extension

Tree Fruit

Post-harvest Management

Post-harvest Information Network

The production of apples and pears is a complex process involving orchard, storage and marketing phases. Modern post-harvest technologies make the long-term storage of apples and pears possible. In Washington, apples can be stored for up to 12 months and winter pears for up to nine months.

WSU’s post-harvest information network is a source for information on apples, pears, cherries, stone fruit, and post-harvest practices. Go to the Post-harvest Information Network home page »

Cullage Assessment

With a keen eye on the needs of Washington producers selling to the global market, WSU researchers have trainings and information to help industry professionals identify damage and disorders encountered during the cullage assessment phase of the post-harvest process. There are also useful materials for people involved with identification of fruit damage in the orchard. Available materials include visual identification guides, instructions for sampling in the orchard and packinghouse, as well as, quarantine pest and export work plan information. Learn more »

Post-harvest Disease Information

Post-harvest diseases can be a limiting factor for the long-term storage of fruits. Losses as high as 50-60 percent in storage bins prior to packing have been observed. Instances of severe decay on packed fruit in the boxes have also been observed. Fruit decay and repacking of fruit due to decay cost the fruit industry millions of dollars in losses each year. Decay management has been considered one of the essential components in a profitable production system for pome fruits.

Because of the complexity of the production process, WSU researchers are dealing with post-harvest diseases in two phases: 1) fruit decay in storage bins before packing and 2) fruit decay after packing.

Control of post-harvest decay should start in the orchard and continue until the fruit are sold.

Accurate diagnosis of post-harvest diseases is the first step to implement relevant measures to control the problems. Learn more »

Tree Fruit, Hulbert 421, PO Box 646242, Washington State University, Pullman WA 99164-6242, 509-335-4561, Contact Us
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