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Search Results for "resistance"

Spider Mite Control During the Summer

Thursday June 01, 2017 1:07am
There are currently lots of options to control spider mites in orchards. However, preventing outbreaks by avoiding pesticides toxic to predatory mites and their alternative prey is always first choice. If uncontrolled, spider mites can go through a single generation in 7-10 days during summer and increase their numbers exponentially. Monitoring helps to follow spider mite population growth and to intervene when necessary.

Use Pesticides Wisely to Avoid Resistance

Saturday May 27, 2017 12:04am
Repeated use of pesticides with the same mode-of-action used in the orchard can accelerate the development of insecticide resistance. WSU recommends that when you choose insecticides, keep track of which ones are being used so that you alternate materials with the different modes-of-action (shown in DAS) between generations.

Powdery Mildew of Cherry: New Fungicide Tools and Resistance Management Guidelines

Tuesday May 16, 2017 4:04pm
As of spring 2011 cherry growers in Eastern Washington have several new fungicides at their disposal for managing powdery mildew. New products included in the powdery mildew toolbox include Adament (tebuconazole + trifloxystrobin), Quash (metconazole), and Unicorn (tebuconazole + sulfur).

Leafroller and Codling Moth Movement During the Season

Tuesday May 16, 2017 4:04pm
Movement of codling moth and leafrollers into your orchard can be the start of serious damage. Both CM and leafrollers can easily fly 5-7 miles in a single night and their reproduction is as high as those that do not fly. Although 5-7 mile flights are common, the likelihood of the moths coming to your orchard in high numbers is directly related to wind speed, distance from the source, and the environment in between the source and your orchard.
Decision Aid System v. 6.3.36 (DAS) - Tree Fruit Research & Extension Center
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