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@ARTICLE{Koch:864339,
author = {Koch, Maximilian and Guppy, Christopher and Amelung, Wulf
and Gypser, Stella and Bol, Roland and Seidel, Sabine and
Siebers, Nina},
title = {{I}nsights into 33phosphorus utilisation from {F}e- and
{A}l-hydroxides in {L}uvisol and {F}erralsol subsoils},
journal = {Soil research},
volume = {57},
number = {5},
issn = {1838-675X},
address = {Collingwood, Victoria},
publisher = {CSIRO},
reportid = {FZJ-2019-04135},
pages = {447 - 458},
year = {2019},
abstract = {There is currently relatively little available information
on subsoil phosphorus (P) use for crop production as a
function of soil order. In this study, a rhizobox experiment
was performed using subsoils of two reference soil groups,
an Orthic Ferralsol and a Haplic Luvisol. To evaluate the
immediate P uptake by wheat (Triticum aestivum L.) from
different subsoil P pools during 14 days of growth, subsoil
bands were spiked with KH2PO4 solution associated to
Fe-hydroxide (33P-Fe), to Al-hydroxide (33P-Al), in free
form (33P-OrthoP), or in trace amounts without any
additional 31P (33P-NoP). At the beginning of the
experiment, the soil water content was set at $75\%$ of
water-holding capacity, corresponding to an initial soil
matric potential of −12 ± 1 kPa. During plant growth,
soil moisture decreased in both soils, but soil matric
potentials in both soils did not drop below field capacity
(−33 kPa; pF 2.5). The shoot dry weights of the Ferralsol
were 1.2 to 1.8 times those of the Luvisol. Despite elevated
soil P availability in the Luvisol, shoot P concentrations
did not differ between the two soils. The amount of 33P
taken up by the shoots from the oxide phases was $15\%$ to
$40\%$ greater in the Ferralsol treatments than in those in
the Luvisol treatments. It was concluded that the more
favourable physical soil conditions facilitated 33P uptake
from both oxidic phases from the Ferralsol subsoil relative
to the Luvisol subsoil, despite better P phytoavailability
in the latter.},
cin = {IBG-3},
ddc = {640},
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:000475314600002},
doi = {10.1071/SR18223},
url = {https://juser.fz-juelich.de/record/864339},
}