The Royal Agricultural University (RAU) has been carrying out weeding trials at its Harnhill Manor Farm, near Cirencester, looking at the role of mechanical weeding. The replicated field trials have been designed to demonstrate weed control achieved by 4 different mechanical weeder options: Opico harrow comb weeder, Garford RoboCrop inter row hoe, TRP Rotanet and the Combcut weeder, which we are comparing with no mechanical weeding (control).