This is the 4th year of the EPA phase-out of AZM (Guthion). Starting this year apple growers are limited to 1.5 lbs AI per acre. This reduction limits growers to only one application of a high labeled rate for the year. And next year will be the final year (same rate) of its use. So, if you've been putting off the inevitable, it is time to adopt OP-alternative insecticides into your pest management program.
The Pest Management Transition Program website is a good source of information on alternatives to AZM. Check out our handbook at: pmtp.wsu.edu/handbook.html
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