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| Rasmussen, Ilse A.. |
| In organic farming, mechanical weed control in winter wheat is often difficult to carry out in the fall, and may damage the crop, and weed harrowing in the spring is not effective against erect, tap-rooted weeds such as Tripleurospermum inodorum, Papaver rhoeas, Brassica napus and others which have been established in the autumn. Some experiments concerning sowing strategy and intensity of mechanical weed control, which included row distance, were conducted. The results underline the importance of choosing weed control strategy, including preventive measures, according to the weed flora in the field. In the experiment with low weed pressure and without erect weeds, there was very little effect of sowing strategy and row distance. In such a case, the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management Crop husbandry Cereals; Pulses and oilseeds. |
| Ano: 2000 |
URL: http://orgprints.org/216/1/Elspeet.pdf |
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| Rasmussen, Ilse A.. |
| A series of field experiments were carried out in winter wheat grown under organic conditions in Denmark on fields with different weed pressure. The treatments were sowing strategy (normal sowing time, late sowing and false seedbed), row distance (12 cm and 24 cm row distance) and weed control method (untreated, mechanical weed control (weed harrowing at 12 cm supplemented with row hoeing at 24 cm), and herbicide weed control). Weed biomass was largest at the normal sowing time and was reduced by mechanical or chemical weed control. Row distance alone did not generally influence weed biomass, but mechanical weed control reduced weed biomass at a row distance of 24 cm. Normal sowing time gave rise to about 10% higher yield. The effect of weed control on... |
| Tipo: Journal paper |
Palavras-chave: Weed management Crop husbandry Cereals; Pulses and oilseeds. |
| Ano: 2002 |
URL: http://orgprints.org/215/1/vihveart_wr_rev.doc |
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