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Judy from Spring Hill, Fl writes

Is Dithiopyr 40 WSB applied once a year or twice a year?

What is the time period that Dithiopyr is effective?

Answer:

How much Dithiopyr 40 WSB you use depends on the program you are going to use, however the amount is not easily measured out for smaller areas since it is in premeasured pouches. The max rate on the label states: Do not apply more than 0.5 lb ai/acre per application or more than 1.5 lb ai/acre per year using split or sequential applications. A better option if you have less than an acre to treat would be the liquid version, Dimension 2E. You will use 0.33 – 0.73 of an ounce of Dimension 2EW per 1,000 sq ft. The exact usage rate will depend on your location and the application program you choose. Please refer to pages 4-6 of the product label to find the exact usage rate for your needs. 

Answer last updated on: 02/03/2019

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Dithiopyr 40 WSB

Dithiopyr 40 WSB

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