WSU Decision Aid System

WSU Decision Aid System

Apply Mating Disruption Dispensers Before First Moths Fly

Monday February 26, 2018 4:49pm
Mating disruption dispensers work by releasing synthetic pheromone which prevents or delays males from finding and mating with females. Therefore, dispensers need to be placed in your orchard before the first moths fly and mate. First moth flight (= biofix) occurs at around 175 DD. We recommend to place pheromone traps before first apple blossoms open or by 100 DD whichever comes first.

Why Coverage and Calibration Matter

Friday February 16, 2018 8:20am
Taking the time to ensure that your sprayer is properly calibrated will insure best control of pests and diseases and save time and money. Proper calibration of an airblast sprayer requires that tractor speed, water volume, and nozzle manifold arrangement be coordinated to achieve the best coverage under site-specific operating conditions. Driving too fast is the most common error made in airblast sprayer calibration.

Ways to Reduce Drift

Friday February 16, 2018 8:19am
Spray drift is one of the most important issues facing pesticide applicators. Movement to off-site locations can be caused by wind, poor calibration/adjustment, and operator error.

How Relevant Are Parasitoids for Leafroller Control?

Tuesday February 13, 2018 11:44am
Leafrollers have a number of parasitoids that naturally occur in orchards.

Most Effective Strategies for Control of Obliquebanded Leafroller

Tuesday February 13, 2018 11:43am
Timing is everything when it comes to effective pest management. Knowing when a pest is susceptible to which kind of pesticide is the key for successful control.
Decision Aid System v. 6.8.0 (DAS) - Tree Fruit Research & Extension Center
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