| Manual weeding of intrarow weeds in seeded leek and bulb onion grown organically can be very labour-intensive. Four field experiments, two in direct-sown leek (Allium porrum L.) and two in direct-sown bulb onion (Allium cepa L.), were made in this investigation to study the effects of physical and cultural methods on intrarow weed numbers, time consumption for hand-weeding and marketable yield parameters. The physical methods considered were: pre-emergence flaming and harrowing, and post-emergence hoeing close to the row (only leek) and vertical brush weeding. The cultural methods were: seed priming, slurry placement, and cultivar choice (only leek). Flaming plus brush weeding gave generally the highest intrarow weed control at 92% and 87%, respectively,... |
