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WSU Decision Aid System

WSU Decision Aid System

How Relevant Are Parasitoids for Leafroller Control?

Wednesday January 02, 2019 12:00am
Leafrollers have a number of parasitoids that naturally occur in orchards.

NEW Model: Bloom Phenology

Wednesday January 02, 2019 12:00am
DAS now predicts bloom phenology for Gala, Red Delicious, Cripps Pink, and Ambrosia. The models predict the start and duration for 8 different bud development and bloom stages: green tip, half-inch green, tight cluster, first pink, full pink, first bloom, full bloom, and petal fall.

NEW Model: Bloom Phenology - Ambrosia

Wednesday January 02, 2019 12:00am
We just added the bloom phenology model for Ambrosia. The bloom models predict the start and duration for 8 different bud development and bloom stages: green tip, half-inch green, tight cluster, first pink, full pink, first bloom, full bloom, and petal fall.

Apply Mating Disruption Dispensers Before First Moths Fly

Wednesday January 02, 2019 12:00am
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.

Campylomma Bug

Wednesday January 02, 2019 12:00am
Campylomma can be a pest during the bloom period when it feeds on young developing fruit. However, it is a beneficial predaceous insect that is valuable in control of soft bodied insects (such as spider mites) throughout the rest of year. DAS predicts the phenology of Campylomma during the spring, but beating tray samples need to be taken before and during the spring bloom period to determine if Campylomma is present and whether treatment is necessary.
Decision Aid System v. 6.8.0 (DAS) - Tree Fruit Research & Extension Center
1100 N Western Ave, Washington State University, Wenatchee WA 98801, 509-663-8181
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