INFLUENCE OF SOIL WATER MATRIC POTENTIAL AND RESISTANCE TO PENETRATION ON CORN ROOT ELONGATION
- 1 November 1973
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Soil Science
- Vol. 53 (4), 383-388
- https://doi.org/10.4141/cjss73-055
Abstract
A study of the interacting effects of soil bulk density and soil water matric potential on resistance to penetration and on corn root elongation showed that for any level of resistance, elongation was further restricted as potential decreased (suction increased). This was explained through the effect of matric potential on plant turgor, which in turn affects the ability of the root to overcome resistance. At negligible resistance, elongation was greater in a clay loam soil than over a range of equivalent osmotic potentials in solution, indicating that moisture transport in the soil apparently did not restrict moisture supply to the root. It is suggested that the presently accepted upper limits of resistance for corn growth may be too high.Keywords
This publication has 6 references indexed in Scilit:
- Mathematical Description of the Influence of Temperature and Seed Quality on Imbibition by Seeds of Corn (Zea mays L.)1Crop Science, 1972
- ROOT ELONGATION RATES OF COTTON AND PEANUTS AS A FUNCTION OF SOIL STRENGTH AND SOIL WATER CONTENTSoil Science, 1969
- SOIL STRENGTH-ROOT PENETRATION RELATIONS FOR MEDIUM- TO COARSE-TEXTURED SOIL MATERIALSSoil Science, 1966
- Penetration of Wax Layers by Cotton Roots as Affected by Some Soil Physical ConditionsSoil Science Society of America Journal, 1964
- INFLUENCE OF SOIL STRENGTH OF GROWTH OF ROOTSSoil Science, 1963
- PENETRATION OF COTTON SEEDLINGN TAPROOTS AS INFLUENCED BY BULK DENSITY, MOISTURE CONTENT, AND STRENGTH OF SOILSoil Science, 1963