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The Resistance of Intact Maize Roots to Water Flow
Author(s) -
So H. B.,
Aylmore L. A. G.,
Quirk J. P.
Publication year - 1976
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1976.03615995004000020012x
Subject(s) - rhizosphere , tensiometer (surface tension) , water content , water flow , resistance (ecology) , water potential , moisture , soil science , agronomy , environmental science , soil water , chemistry , biology , geology , geotechnical engineering , bacteria , genetics , physics , organic chemistry , quantum mechanics , surface tension
Using a novel tensiometer‐potometer system the relationship between the root resistance to water flow of maize and the water potential of the root tissue has been examined. Over the range of water potentials used a linear relation has been observed in contrast to previous observations. Calculations using published data indicate that the rhizosphere resistance is of the same order of magnitude as the root resistance when the soil moisture potential of the rhizosphere is about −1 to −2 bars.