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1. Surface tension, rheology and hydrophobicity of rhizodeposits and seed mucilage influence soil water retention and hysteresis

Author:
Naveed, M.; Ahmed, M. A.; Benard, P.; Brown, L. K.; George, T. S.; Bengough, A. G.; Roose, T.; Koebernick, N.; Hallett, P. D.
Source:
Plant and soil 2019 v.437 no.1-2 pp. 65-81
ISSN:
0032-079X
Subject:
barley; contact angle; corn; dialysis; drying; hydrogels; hydrophobicity; hydroponics; hysteresis; mucilages; osmotic pressure; polyethylene glycol; rheology; rheometers; rhizosphere; root exudates; roots; sandy loam soils; soil sampling; soil water; soil water retention; surface tension; surfactants; viscosity; wilting point
Abstract:
... AIMS: Rhizodeposits collected from hydroponic solutions with roots of maize and barley, and seed mucilage washed from chia, were added to soil to measure their impact on water retention and hysteresis in a sandy loam soil at a range of concentrations. We test the hypothesis that the effect of plant exudates and mucilages on hydraulic properties of soils depends on their physicochemical characteris ...
DOI:
10.1007/s11104-019-03939-9
PubMed:
31007286
PubMed Central:
PMC6447521