Effect of Chemical and Mechanical Fallow Methods on Moisture Storage, Wheat Yields, and Soil Erodibility1
- A. L. Black and
- J. F. Power2
Neither complete chemical fallow (no tillage) nor combinations of chemical and mechanically tilled fallow methods resulted in more moisture conserved than conventional stubble-mulch fallow. Grain yields (Triticum aestivum L., ‘Lee’ ‘Rescue’, or ‘Centana’) were highest on stubble-mulch fallow, or other tillage plots receiving no spray at any time. Lowest moisture conservation and grain yields resulted from complete chemical fallow. Yields were lower even in the absence of visual residual effects of chemical treatments.
Wind erodibility of the surface of complete chemical fallow soils was considerably lower than stubble-mulch fallow. Complete chemical fallow methods increased surface residue cover at least 10% and significantly decreased the erodible fraction of the 0- to 2-inch soil layer in comparison with stubble-mulch fallow.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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