Deep ripping and topsoil inclusion: a case study at paddock scale – WA (Case study)
This case study addresses the issue of managing compact acid subsoil layers in sandy soils in cropping land near Geraldton, Western Australia. This work was funded by the Grains Research and Development Corporation (GRDC) and investigated the effect of deep ripping, inclusion of topsoil, and whether and where to deep rip e.g on ripline or off-row ripline. The researchers from the WA Department of Primary Industries and Regional Development (DPIRD) found that 4 years after deep-ripping with topsoil inclusion, canola yield increased. There was an improvement in pH and lower bulk density along the rip line, enabling deeper root penetration. The webpage includes a video presentation by researcher, Bindi Isbister, explaining the results of the study. This case study may be relevant to other regions with similar soil features.#
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