Summary Because of their organic matter content, the surface tension of water of soils is about 8 to 9 erg cm ‐2 (8 to 9 × 10 ‐7 J cm ‐2 ) less than that of pure water. It is estimated that the surface tension of soil solution is 63–64 erg cm ‐2 in the surface soils studied.
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Tschapek et al. (1978) studied this question.
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