Nutgrass (Cyperus rotundus) remains one of the major problem weeds of cotton production. However, extensive research has show nutgrass can be controlled using management strategies which: ensure a strong, competitive crop; use herbicides to control nutgrass when its actively growing; use cultivation when nutgrass is stressed, in hot, dry conditions, and; prevent nutgrass spreading on equipment. Results from last season were very promising, with even a single, shielded Roundup application dramatically reducing the nutgrass population. Two growerswho applied glyphosate in-crop last season, were extremely pleased with their results. Research plots in one fieldfield showed a 0.8 bales/acre yield increase when shielded Roundup was applied in-crop on 3 occasions.