#$%^&*AU2011265350A120120705.pdf#####- 10 ABSTRACT A method of controlling weed growth in a paddock comprises the removal of weed seeds from trash produced by a harvester prior to the trash being 5 returned or spread onto the ground. The method contemplates directing trash from a combine harvester into a separator which is drawn by or run separately but in close proximity to, a combine harvester. The separator operates to separate weed seeds from the trash to form a weed seed fraction that is stored in the separator for later disposal, and a cleaned trash fraction. The cleaned 10 trash fraction can be dumped or spread over the ground. By removing weed seeds from the trash, the volume of weeds produced in the next growing season is reduced. 30333431 (GHMatters) P85818 AU.1 19/12/11(rehue~ a~ iIe du1 Cte~1(2 ,2c2+ P31