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- W207673561 abstract "Tillage can help maintain weed populations at a low and stable level directly by killing or damaging weeds, or indirectly by improving the achievable performance and timeliness of operations, enhancing the establishment and growth of a competitive crop, and by interfering at other points in weed lifecycles. Two areas where soil tillage research can help reduce herbicide reliance of weed management are highlighted: mechanical weeding and enhancing weed seed mortality. This paper considers the following questions: 1) Can required tactics be accomplished in current tillage systems? 2) What tillage system improvements would provide better opportunities for mechanical weeding and reduced weed emergence? and 3) how can non-chemical weed management be merged with soil conservation? Major limitations with mechanical weeding include limited weed control in crop rows at early vulnerable crop stages, the weather-dependent effectiveness and workability, and difficulties in handling crop residues. It is expected that precise steering and depth control of intra-row tools, improved seedbed friability and using light tractors and controlled traffic would bring considerable improvements. To exploit the potential of exposing weed seeds to predators at the soil surface and disposing the remaining seeds in a position with high fatal germination, high seed viability decline and low emergence probability, completely different soil displacement patterns may be required than those created by current implements and tillage systems. High-precision strip-tillage could extend the period of weed seed decay and reduce weed emergence by burying weed seeds in narrow vertical slots. Managing residues and living mulches is an important topic in weed management. As mouldboard plough systems generally facilitate a wider variety of non-chemical tactics than conservation and no-till systems, non-chemical weed management and soil conservation appear contradictory. However, controlled traffic and precise strip tillage might offer opportunities to merge mechanical and thermal control, enhanced weed seed mortality and maintaining residues." @default.
- W207673561 created "2016-06-24" @default.
- W207673561 creator A5040587032 @default.
- W207673561 date "2003-01-01" @default.
- W207673561 modified "2023-09-26" @default.
- W207673561 title "Enhancing non-chemical weed management - how soil tillage research can contribute" @default.
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- W207673561 hasPublicationYear "2003" @default.
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