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Non-uniform soil water extaction by plant roots

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Abstract

Using the technique of Computer Assisted Tomography applied to gamma ray attenuation measurement of soil water content, it has been shown that the assumption of uniform absorption of soil water along a plant root is clearly erroneous and that drawdown distance is a function of time. The results suggest that the plant sequentially removes water from the top to the bottom of the root as soil hydraulic resistance becomes a major limiting factor in the upper layers, even at the high soil water potential (−0.30 MPa) used.

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References

  • Caldwell M M 1976In Water and Plant Life. Eds O L Lange, L Kapper, and E D Schulze. Springer-Verlag Berlin.

    Google Scholar 

  • Cowan I R 1965 J. Appl. Ecol. 2, 221–239.

    Google Scholar 

  • Gardner W R 1960 Soil Sci. 89, 63–73.

    Google Scholar 

  • Hainsworth J M and Aylmore L A G 1983 Aust. J. Soil Res. 21, 435–443.

    Google Scholar 

  • Hainsworth J M and Aylmore L A G 1986 Soil Sci. Soc. Am. J. 50, 841–848.

    Google Scholar 

  • Hainsworth J M and Aylmore L A G 1988 Aust. J. Soil Res. 26, 105–110.

    Google Scholar 

  • Oosterhuis D M 1981 Ph.D. Thesis, Utah State University, Logan U.S.A.

  • Sanderson J 1983 J. Exptl. Botany 34, 240–253.

    Google Scholar 

  • Shone M G T and Flood A V 1980 J. Exptl Botany 31, 1147–1159.

    Google Scholar 

  • So H B et al. 1978 Plant and Soil 49, 461–475.

    Google Scholar 

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Hainsworth, J.M., Aylmore, L.A.G. Non-uniform soil water extaction by plant roots. Plant Soil 113, 121–124 (1989). https://doi.org/10.1007/BF02181929

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  • DOI: https://doi.org/10.1007/BF02181929

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