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Bt Applications for Leafrollers

Tuesday March 13, 2018 9:02am
Bacillus thuringiensis (Bt) is a bacterium that must be eaten by lepidopteran larvae (caterpillars) to be effective. Temperatures need to be above 65°F for 3 or more days so that larvae have a chance to feed on it before sunlight breaks it down.

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.
Decision Aid System v. 6.8.0 (DAS) - Tree Fruit Research & Extension Center
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