Requirements for Achieving and Maintaining Uniformly Low Salt in a Saline Soil
1965
Robinson, C. W. | Kemper, W. D. | Golus, H. M. | Schumaker, G. | Pugh, W. J.
The amount of irrigation necessary to limit salinity in the plant root zone to concentrations equal to or less than 8 mmho/cm was computed from the consumptive use, rainfall, and salinity of the irrigation water, assuming completely homogeneous plots. Heterogeneity of infiltration rates within plots required that the amount of water applied be 10 to 20% higher than in the theoretical homogeneous case in order to maintain adequate salt removal. Irrigation at 30% higher than the need for the homogeneous case resulted in reduced yields and reduced N content of wheatgrass in areas of high infiltration within the plots. Irrigation at 6% higher than necessary for the homogeneous case resulted in accumulation of salts in areas of low infiltration.
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