The Hi-Yield Crabgrass Weed Control is not labeled for use on any type of pasture or grazing land.
Hi-Yield Crabgrass Weed Control is labeled for pre-emergent control of poa annua as directed on the product label.
Per the product label, Hi-Yield Crabgrass Weed Control should not be applied more than twice a year and should be applied 1 to 2 weeks before germination of annual grass weeds for best control. Please see the product Label for specific application rates and times.