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@ARTICLE{Morandage:892907,
author = {Morandage, Shehan and Vanderborght, Jan and Zörner, Mirjam
and Cai, Gaochao and Leitner, Daniel and Vereecken, Harry
and Schnepf, Andrea},
title = {{R}oot architecture development in stony soils},
journal = {Vadose zone journal},
volume = {20},
number = {4},
issn = {1539-1663},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2021-02431},
pages = {e20133},
year = {2021},
abstract = {Soils with high stone content represent a challenge to root
development, as each stone is an obstacle to root growth. A
high stone content also affects soil properties such as
temperature or water content, which in turn affects root
growth. We investigated the effects of all soil properties
combined on root development in the field using both
experiments and modeling. Field experiments were carried out
in rhizotron facilities during two consecutive growing
seasons (wheat [Triticum aestivum L.] and maize [Zea mays
L.]) in silty loam soils with high $(>50\%)$ and low
$(<4\%)$ stone contents. We extended the CPlantBox root
architecture model to explicitly consider the presence of
stones and simulated root growth on the plot scale over the
whole vegetation period. We found that a linear increase of
stone content resulted in a linear decrease of rooting depth
across all stone contents and developmental stages
considered, whereas rooting depth was only sensitive to
cracks below a certain crack density and at earlier growth
stages. Moreover, the impact of precipitation-influenced
soil strength had a relatively stronger impact on simulated
root arrival curves during the vegetation periods than soil
temperature. Resulting differences between stony and
non-stony soil of otherwise the same crop and weather
conditions show similar trends as the differences observed
in the rhizotron facilities. The combined belowground
effects resulted in differences in characteristic root
system measures of up to $48\%.$ In future work, comparison
of absolute values will require including shoot effects—in
particular, different carbon availabilities.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {217 - Für eine nachhaltige Bio-Ökonomie – von
Ressourcen zu Produkten (POF4-217) / DFG project 15232683 -
TRR 32: Muster und Strukturen in
Boden-Pflanzen-Atmosphären-Systemen: Erfassung,
Modellierung und Datenassimilation},
pid = {G:(DE-HGF)POF4-217 / G:(GEPRIS)15232683},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000659904000001},
doi = {10.1002/vzj2.20133},
url = {https://juser.fz-juelich.de/record/892907},
}