Production of summer crops in northern New South Wales, 2. Effects of tillage and crop rotation on yields of sorghum
1992
Holland, J.F. | Herridge, D.F. (New South Wales Agriculture, Tamworth (Australia). Agricultural Research Centre)
In field experiments, 2 crops of sorghum were grown in successive seasons at 3 sites following either soybean, mungbean, cowpea, pigeonpea, sunflower or sorghum, using different tillage practices. Responses to no-tillage were apparent in only a very dry season: in the other 3 seasons, the cultivated crops out-yielded the no-tilled crops or the differences between the 2 practices were not significant. It was concluded that yields of sorghum can be increased by the use of no-tillage and by growing the crop after a grain legume or after sunflower compared with continuous sorghum. Rainfall has a dominant influence on production for rainfed cropping, and for particular seasons or sites, that influence may override the benefits of no-tillage and crop rotations.
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