In cereal farming, no one neglects the yield. In grassland, on the other hand, yield potential is often still being wasted. Early cutting for grass silage instead of hay prevents natural grass reseeding. Those who do not continuously reseed the desired, site-appropriate grasses automatically lose yield from year to year. Especially after dry years with gaps in the sward, dock and common brome, the most feared weeds in the grass stand, appear more frequently. An always intact and closed sward prevents the occurrence of undesirable weeds.