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Research targets slow no-till response

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Figure 1: Mean yuield (t/ha) of 20 years (1983 - 2003) cropping comparing tillage systems.. When land has been cropped for many years with multiple cultivations per crop, research is showing that it can take at least three years before the advantages of no or reduced tillage show up in extra yield or more organic soils... Reduced tillage treatments - no-till, reduced-till (one to three passes per fallow of a chisel plough, blade plough and rod weeder) and stubble mulch (two to five passes per fallow of a chisel plough, blade plough and rod weeder) - convincingly out-yielded the conventional aggressive tillage system (involving two to five passes per fallow of a disc plough, scarifier and cultivator) by an average of 24 to 30 per cent per crop over the first 20 years...
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