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Final Report: UCS00008 - The contribution of subsoil constraints to Canola Yield Decline

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The aim of the study was to evaluate the impact of subsurface (below plough layer) and subsoil (B horizon) constraints on the performance of canola... The inclusion of canola in the cropping rotation underpinned unprecedented wheat yield improvements in many areas during the 1990s... Canola was generally considered more sensitive than wheat to hardpans, water logging and soil acidity but less sensitive to salinity and boron toxicity, although no comprehensive studies have been carried out to confirm these observations...
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