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ABSTRACT
A new inductive electromagnetic device (EM) for measuring soil electrical conductivity (ECa) was tested. Practical and accurate methods are given for measuring ECa by soil depth intervals through soil profiles using a succession of EM readings made at various heights above ground. In contrast with other devices and methods for field salinity appraisal, readings are obtained without any soil-to-instrument contact. The device is well suited for field investigations of soil salinity.
1 Contribution from the U.S. Salinity Laboratory, USDA-AR-SEA, Riverside, CA 92501.
2 Supervisory Soil Scientist and Soil Scientist, respectively.
Received for publication July 21, 1980. Accepted for publication December 9, 1980.
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