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@ARTICLE{Pfeifer:136581,
author = {Pfeifer, Johannes and Faget, Marc and Walter, A. and
Bloßfeld, Stephan and Fiorani, Fabio and Schurr, Ulrich and
Nagel, Kerstin},
title = {{S}pring barley shows dynamic compensatory root and shoot
growth responses when exposed to localised soil compaction
and fertilisation},
journal = {Functional plant biology},
volume = {-},
number = {6},
issn = {1445-4416},
address = {Collingwood, Victoria},
publisher = {CSIRO Publ.},
reportid = {FZJ-2013-03367},
pages = {-},
year = {2013},
abstract = {The impact of heterogeneous soil compaction in combination
with nutrient availability on root system architecture and
root growth dynamics has scarcely been investigated. We
quantified changes of barley (Hordeum vulgare L.) root and
shoot growth during the first 3 weeks of growth in a
controlled-environment chamber. Vertically divided
split-root rhizotrons were filled either uniformly with
loose or compacted peat, or heterogeneously with loose peat
in one compartment and compacted peat in the other. We
investigated the following questions. (a) Can growth
processes affected by soil compaction be mimicked in our
system? (b) Do plants show compensatory growth effects when
exposed to heterogeneous soil compaction? (c) Does localised
fertiliser application affect root systems’ responses to
compaction? We observed compensatory effects regarding root
system architecture and root growth dynamics due to
vertically heterogeneous soil compaction. Roots grew deeper
and lateral roots emerged earlier in the loose compartment
of the split-root treatment compared with uniform
treatments. When fertiliser was applied only via the
compacted compartment in the split-root treatment, more
lateral roots were initiated in the compacted compartment
and lateral root formation started a few days earlier than
in the uniform treatments. Consequently, the first days
after exposure to heterogeneous soil conditions are critical
for the analysis of underlying physiological responses.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {242 - Sustainable Bioproduction (POF2-242) / 89582 - Plant
Science (POF2-89582)},
pid = {G:(DE-HGF)POF2-242 / G:(DE-HGF)POF2-89582},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000335386300003},
doi = {10.1071/FP13224},
url = {https://juser.fz-juelich.de/record/136581},
}