SSSAJ Journal of Natural Resources and Life Sciences Education
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Published in Soil Sci Soc Am J 29:597-601 (1965)
© 1965 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Requirements for Achieving and Maintaining Uniformly Low Salt in a Saline Soil1

C. W. Robinson, W. D. Kemper, H. M. Golus, G. Schumaker and W. J. Pugh2

ABSTRACT

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.

NOTES

1 Contribution from the Colorado Agr. Exp. Sta. and the Soil and Water Conservation Research Division, ARS, USDA. Authorized for publication as Colorado Agr. Exp. Sta., Sci. J. Series no. 908. Presented before Div. S-6 Soil Science Society of America, Nov. 18–22, 1963, at Denver, Colo.

2 Assistant Agronomist, Colorado Agr. Exp. Sta., Grand Junction; Research Soil Scientist, USDA, and Associate Agronomist, Colorado Agr. Exp. Sta., Fort Collins; Junior Agronomist, Colorado Agr. Exp. Sta., Grand Junction; Soil Scientist, USDA, Grand Junction; and Agricultural Engineering Aid, Colorado Agr. Exp. Sta., Grand Junction; respectively.

Received for publication December 31, 1964. Accepted for publication April 6, 1965.






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Environmental Quality		 The Plant Genome
Copyright © 1965 by the Soil Science Society of America.