We are in a CRP and WHIP program and what we did was spray in the falland then burned it, then plowed it in the spring. We had to do this to destroy the fescue. Our disk wouldn't cut through that thick grass. It was a year process but it is well worth it. We just planted 4500 trees, oats, ladino, millet, sorghum, sunflowers and we have some turnips to get in the ground in July.