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WSU Decision Aid System

WSU Decision Aid System

Western Flower Thrips

Wednesday April 04, 2018 12:07pm
Western flower thrips feeding causes bloom distortion and poor fruit set. Egg-laying punctures create "pansy spot" on some cultivars. Adults can be sampled using either beating trays or blue sticky cards.

Monitoring Adult Codling Moth

Tuesday April 03, 2018 9:23am
Adult codling moth (CM) are monitored with traps baited with either CM pheromones or a mixture of pheromones and an attractant (Combo D/A lure). Pheromone traps should be placed in the upper 1/3 of the tree canopy before first apple blossoms open or by 100 DD since January 1 whichever comes first. If you are not using mating disruption...

NEW Model: Bloom Phenology - Ambrosia

Tuesday April 03, 2018 9:21am
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.

Factors Affecting Bee Pollination of Tree Fruits

Wednesday March 21, 2018 11:53am
Nearly 1,000 species of bees occur in the Pacific Northwest, but only a small number of species are useful in the pollination of orchard crops. Pesticide use and loss of appropriate nesting habitat have reduced the numbers of wild bee pollinators, leaving most of the pollination for commercial orchards dependent on honeybees. The success of honeybee pollination in tree fruits is affected by a number of factors, which in part can be manipulated by orchardists and beekeepers.

Combining Leafroller and Codling Moth Control Tactics

Wednesday March 21, 2018 9:30am
The period of time when overwintering leafroller (LR) larvae are most susceptible to the new insecticides overlaps with the beginning of the codling moth (CM) egg laying period. Some new insecticides will kill overwintering leafroller larvae as well as codling moth eggs that are laid on top of the insecticide residues.
Decision Aid System v. 6.7.0 (DAS) - Tree Fruit Research & Extension Center
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