From the Field
Storage Scald of Apples
Saturday Aug 15, 2026
The appearance of storage scald has been related to orchard temperature during the final weeks of fruit maturation. DAS provides accumulated hours below 50°F as well as orchard management recommendations for this postharvest disorder.
Predicting Third Generation of CM
Saturday Aug 01, 2026
Predicting the extent of the third generation of codling moth (CM) is based on a statistical relationship of the degree-days historically found on 1 August and at the end of the season on 1 November. We update this prediction roughly every 10 days after 15 August because the DD prediction for 1 November gets more accurate as we get closer.
Stinkbugs Seek Orchard When Shrubs Dry
Tuesday Jul 21, 2026
Adult stinkbugs puncture fruit with their beaks to feed on the fruit flesh. Stinkbug damage in apples can occur beginning in mid-summer and accumulate through the harvest period when new adults move into the orchard from outside habitats.
What is DAS?
The Decision Aid System (DAS) is a collaborative project between WSU Extension, the WSU Agricultural Research Center, and partners in agricultural industries. The DAS is a web-based platform designed to transfer time-sensitive information to decision makers. We run insect, disease, disorder, and horticultural models to predict on-farm conditions in real time, and link these site-specific forecasts to appropriate management and pesticide guidelines.
