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Improved leaching practices save water, reduce drainage problems

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Authors

J. W. Biggar, University of California
D. R. Nielsen, University of California

Publication Information

California Agriculture 16(3):5-5.

Published March 01, 1962

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Abstract

Field studies conducted at Tule Lake provide striking evidence that ponding water is not always an efficient method of leaching. In some plots, as much as 6 acre-ft. of water per foot of soil depth was applied, yet the soil salinity was not reduced below one half of the original amount present. Of the six feet of water applied, the first one-half foot was responsible for the leaching obtained. During the winter months, 4 inches of rainfall was recorded. In this case the soil salinity was reduced by one half again, yet the quantity of water involved was 18 times less. Irrigation techniques can also be used to produce similar results. Reasons for these effects involve consideration of the structure of the soil and the variation in the pore velocity. Similar results have been found in other parts of the world. Reclamation of soils inundated by the sea in the Netherlands flood disaster of 1953 was more efficiently carried out by rainfall than by ponding.

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Improved leaching practices save water, reduce drainage problems

J. W. Biggar, D. R. Nielsen
Webmaster Email: wsuckow@ucanr.edu

Improved leaching practices save water, reduce drainage problems

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

J. W. Biggar, University of California
D. R. Nielsen, University of California

Publication Information

California Agriculture 16(3):5-5.

Published March 01, 1962

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Field studies conducted at Tule Lake provide striking evidence that ponding water is not always an efficient method of leaching. In some plots, as much as 6 acre-ft. of water per foot of soil depth was applied, yet the soil salinity was not reduced below one half of the original amount present. Of the six feet of water applied, the first one-half foot was responsible for the leaching obtained. During the winter months, 4 inches of rainfall was recorded. In this case the soil salinity was reduced by one half again, yet the quantity of water involved was 18 times less. Irrigation techniques can also be used to produce similar results. Reasons for these effects involve consideration of the structure of the soil and the variation in the pore velocity. Similar results have been found in other parts of the world. Reclamation of soils inundated by the sea in the Netherlands flood disaster of 1953 was more efficiently carried out by rainfall than by ponding.

Full text

Full text is available in PDF.

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