I don't know the condition of your pastures, your goal for your pastures, size of your pastures, where you are located, etc....
I'm in the process of renovating my pastures, my farm is in East Tennessee. I'm not spraying for weeds. I am soil testing and adding lime to get the ph corrected. I am planting cool season grasses (broadcast) in the fall (timothy, orchard grass, endophyte free fescue). I do a little bit of very light disking. I plant clovers (broadcast) in the last two weeks of February. I don't fertilize my fields. I'm no longer making hay, I'm keeping the nutrients on the farm and building/improving my soil. I let the pastures grow tall to develop stronger root systems, put more carbon/organic material in the ground, and to capture more rainfall. I do rotational grazing, letting pastures rest and recover. That's it.