Chemical selector

Controls cheatgrass, Italian ryegrass, and many winter annual broadleaf weeds. GR1 herbicide is a component product available only in DuPont PrecisionPac blends with other broadleaf herbicides, which may have different use guidelines and restrictions. Apply to small, actively growing weeds in wheat in the fall or spring from the 3-leaf stage up to jointing. Best control is obtained on grasses from 2-leaf to 2-tiller and before broadleaves are 2 inches tall or 2 inches in diameter. Cheat and Japanese brome are more susceptible than downy brome. Apply with NIS at 0.25 to 0.5% v/v, UAN fertilizer at 1 to 2 qt/acre, or AMS at 1.5 to 3 lb/acre can also be added for enhanced weed control. Liquid nitrogen can be used as a spray carrier. The spray solution should not be more than 50% liquid nitrogen and should not exceed 30lb of actual nitrogen per acre. Only use NIS at 0.25% v/v when applied in nitrogen carrier. May be tank mixed with labeled rates of other broadleaf herbicides as needed for optimal control. Do not mix with products containing dicamba or amine formulations of 2,4-D or MCPA as these products may antagonize grass control. Soybean, sunflower, sorghum, and cotton can be planted after 3 months but not prior to April 30. Alfalfa, barley, canola, or corn cannot be planted for 9 months after PowerFlex application. Wheat should not be grazed until 7 days after application or harvested for hay until 28 days after application.