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Taming hostile subsoils for production Taming hostile subsoils for production

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Increased capture and use of deep subsoil water We observed that subsoil manuring enabled the crop roots to extract more deep soil water from the subsoil layers in dry years... We believe that the improved ability of the canola crop on subsoil-manured plots to establish, and then withstand the heavy winter rainfall at the Penshurst site in 2010 (Table 3), compared with the commercial crop, resulted from better aeration in the subsoil... There was no need for the crop to extract water from the subsoil, as there was ample soil water in the topsoil...