Delay weed resistance to herbicides. Use action thresholds to make treatment decisions. Don't treat unless your return will more than cover the cost of the treatment. Check with your local Cooperative Extension agent or private consultant for action thresholds for your region. Know that accurate timing can make the difference between success and failure.
Many herbicides have a narrow window of maximum effectiveness.
Whichever control method you choose, be sure to take action before weeds go to seed. Always carefully remove seeds from clothing and equipment when moving from an infested area to a clean field. Back to top Treatment options Herbicides are only one of many weapons in your arsenal against weeds. Manual or mechanical cultivation is often the best option, especially for post-herbicide spot cleanup. Careful cleanup early in the season is especially important to prevent late-season weed population explosions.