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WA cropping plumbs new depths

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Growers in WA are using powerful deep-ripper implements to break through hardpans and allow plant roots and nutrients to reach deeper, more productive depths.. Trials were undertaken at three sites using various types of rippers and configurations for depth and spacing, including machinery depths to 20, 30 and 40 centimetres and tyne spacings of 30 and 60cm... "The results reinforce the importance of doing small plot trials before applying extreme treatments across paddocks, as well as knowing the characteristics of the subsoil and using an experienced machinery operator - to minimise the risks of negative impacts such as bringing too much clay or rock to the surface," she says...
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