Consider increasing the seeding rate by 20 to 30 percent when planting no-till, and always consider germination rate and purity of the seed when determining seeding rates. Consult your county agricultural Extension agent for the feasibility of no-till pasture establishment in your situation. Both annual and perennial weeds can have a negative impact on your pasture establishment plans. The best way to avoid weed problems is to control established perennial weeds using approved herbicides before you plant. For minor infestations, spot treatment is the most ecologically sound method of control.
Annual weeds pose a bigger problem.
For this reason, fall planting leads to more success in pasture establishment. Very few herbicides are labeled for use in new pasture plantings. Also, many herbicides that will eliminate broadleaf weeds are harmful to legumes and those that will control weed-grass species will harm desirable grasses. It may be easiest to establish a stand of pure grass and be able to control broadleaf weeds the first year using approved herbicides. Producers who are unwilling to move their animals on a regular basis should opt for continuous grazing.