Trimec 992 Broadleaf Herbicide is mixed at 1.5 fl oz per gallon of water. It will take 4 pints to treat an acre. Herbicides do not give a water amount. They only tell you how much of the product to apply over 1000 square feet. The amount of water is dependent on how ever much water it takes for you to walk 1000 square feet. Whether you place the amount of product per 1000 square feet in a gallon of water or 10 gallons of water, it does not matter, just as long as that amount of product is distributed over the 1000 square feet.
Trimec 992 Broadleaf Herbicide is not labeled for that use. We recommend contacting PBI Gordon Corporation. 800-821-7925.
To advise if you can safely use this product in pasture.