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Science 18 March 1966:
Vol. 151. no. 3716, pp. 1385 - 1386
DOI: 10.1126/science.151.3716.1385
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Articles

Soil-Water Potential: Direct Measurement by a New Technique

A. J. Peck 1 and R. M. Rabbidge 1

1 Division of Plant Industry, CSIRO, Canberra, A.C.T., Australia

Current methods of measuring the potential of water in soil are inadequate. It is proposed to depress the reference free energy of water by a predetermined amount from the standard level of pure free water at atmospheric pressure by use of a solute. The specific free-energy difference of soil water from the depressed reference can be measured as a pressure.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
New Polymer Tensiometers: Measuring Matric Pressures Down to the Wilting Point.
G. Bakker, M. J. van der Ploeg, G. H. de Rooij, C. W. Hoogendam, H. P. A. Gooren, C. Huiskes, L. K. Koopal, and H. Kruidhof (2007)
Vadose Zone J. 6, 196-202
   Abstract »    Full Text »    PDF »
Response of the Osmotic Tensiometer to Varying Temperatures: Modeling and Experimental Validation.
P.M. Biesheuvel, R. Raangs, and H. Verweij (1999)
Soil Sci. Soc. Am. J. 63, 1571-1579
   Abstract »    Full Text »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)