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Some Chemical and Bacteriological Relations of Organic Matter in the Soil to Crop Yield

Lockett, John L
Iowa State University Digital Repository · Papers
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earth-sciencesphysical-sciences-and-mathematicssoil-science
For more than a century soil investigators have recognized the importance of organic matter in making soils productive. Indeed, it has been considered as an index to soil fertility. It has been generally accepted that organic matter improves the physical condition of the soil, and hence increases cr
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