Growers are urged to exhaust all cultural grassweed control options pre-drilling of cereals this autumn to reduce the risk of resistance developing to the vital weedkiller glyphosate. At present, the non-selective herbicide is the only viable chemical option for grassweed control in stubbles and stale seed-beds and its loss could be devastating for those with a significant grassweed problem. Contact herbicides such as diquat (Retro) and carfentrazone (Shark) have approval for use in stubbles, but are only effective against a […]