Using a glyphosate spray to kill the old sward is important, as this removes competition from the new seedlings as they are establishing. Follow label guidelines and use the higher rate of water to ensure adequate uptake of the spray by the old grasses and weeds. Allow time for the spray to kill the old sward, particularly if docks and thistles are present. Apply lime to help counteract this surface acidity from surface thrash; liming is critical with min-till and direct drilling.