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Combining physical, cultural and biological methods: prospects for integrated non-chemical weed management strategies

Hatcher, P.E. and Melander, B. (2003) Combining physical, cultural and biological methods: prospects for integrated non-chemical weed management strategies. Weed Research, 43 (5). pp. 303-322. ISSN 0043-1737

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To link to this item DOI: 10.1046/j.1365-3180.2003.00352.x


Physical, cultural and biological methods for weed control have developed largely independently and are often concerned with weed control in different systems: physical and cultural control in annual crops and biocontrol in extensive grasslands. We discuss the strengths and limitations of four physical and cultural methods for weed control: mechanical, thermal, cutting, and intercropping, and the advantages and disadvantages of combining biological control with them. These physical and cultural control methods may increase soil nitrogen levels and alter microclimate at soil level; this may be of benefit to biocontrol agents, although physical disturbance to the soil and plant damage may be detrimental. Some weeds escape control by these methods; we suggest that these weeds may be controlled by biocontrol agents. It will be easiest to combine biological control with. re and cutting in grasslands; within arable systems it would be most promising to combine biological control (especially using seed predators and foliar pathogens) with cover-cropping, and mechanical weeding combined with foliar bacterial and possibly foliar fungal pathogens. We stress the need to consider the timing of application of combined control methods in order to cause least damage to the biocontrol agent, along with maximum damage to the weed and to consider the wider implications of these different weed control methods.

Item Type:Article
Divisions:Life Sciences > School of Biological Sciences
Interdisciplinary centres and themes > Soil Research Centre
ID Code:10769
Uncontrolled Keywords:arable crops, cover crops, cutting, fire, flame weeding, grasslands, intercropping, mechanical weed control, biological control , CLOVER TRIFOLIUM-PRATENSE, CONTROL AGENT, COVER CROP, RUMEX-OBTUSIFOLIUS, SEED PREDATION, SOIL-MOISTURE, LEAFY SPURGE, ULTRAHIGH TEMPERATURES, AMARANTHUS-RETROFLEXUS, ALTERNARIA-ALTERNATA
Additional Information:ISBN 9067546712

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