I've been applying Tenacity this summer as a post-M for Nimblewill. I've been spraying it with a 15gal pull-behind sprayer. The product comes with a syringe with 2 measurement scales on it. One is teaspoons, the other is 'gallons' (ie, amount of product for x gallons) I started out using the gallon scale, only to realize that it wasn't near enough product at my spray rate. My advice is do your own math and measure things properly.

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