% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Schwartz:820789,
author = {Schwartz, N. and Carminati, A. and Javaux, M.},
title = {{T}he impact of mucilage on root water uptake-{A} numerical
study},
journal = {Water resources research},
volume = {52},
number = {1},
issn = {0043-1397},
address = {[New York]},
publisher = {Wiley},
reportid = {FZJ-2016-06056},
pages = {264 - 277},
year = {2016},
abstract = {The flow of water between soil and plants follows the
gradient in water potential and depends on the hydraulic
properties of the soil and the root. In models for root
water uptake (RWU), it is usually assumed that the hydraulic
properties near the plant root (i.e., in the rhizosphere)
and in the bulk soil are identical. Yet a growing body of
evidence has shown that the hydraulic properties of the
rhizosphere are affected by root exudates (specifically,
mucilage) and markedly differ from those of the bulk soil.
In this work, we couple a 3-D detailed description of RWU
with a model that accounts for the rhizosphere-specific
properties (i.e., rhizosphere hydraulic properties and a
nonequilibrium relation between water content and matric
head). We show that as the soil dries out (due to water
uptake), the higher water holding capacity of the
rhizosphere results in a delay of the stress onset. During
rewetting, nonequilibrium results in a slower increase of
the rhizosphere water content. Furthermore, the inverse
relation between water content and relaxation time implies
that the drier is the rhizosphere the longer it takes to
rewet. Another outcome of nonequilibrium is the small
fluctuation of the rhizosphere water content compared to the
bulk soil. Overall, our numerical results are in agreement
with recent experimental data and provide a tool to further
examine the impact of various rhizosphere processes on RWU
and water dynamics.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000373117800016},
doi = {10.1002/2015WR018150},
url = {https://juser.fz-juelich.de/record/820789},
}