Jim from Vacaville, Ca writes
Pasture Pro Herbicide is not labeled to control smutgrass or any other grassy weeds. This product contains the active ingredient 2,4-D which targets broadleaf weeds. Unfortunately, we do not have a product that is labeled to control smutgrass selectively in pastures. You will likely need to spot treat this plant using a non-selective herbicide such as Axxe Herbicide or Ranger Pro (may suppress only). You can also contact your local Cooperative Extension office for their recommendations.
Answer last updated on: 02/18/2020