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@ARTICLE{Cao:917543,
author = {Cao, Xinyue and Reichel, Rüdiger and Wissel, Holger and
Brüggemann, Nicolas},
title = {{I}mproving nitrogen retention of cattle slurry with
oxidized biochar: {A}n incubation study with three different
soils},
journal = {Journal of environmental quality},
volume = {52},
number = {1},
issn = {0047-2425},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2023-00746},
pages = {1 - 12},
year = {2023},
abstract = {The application of livestock slurry in soils can lead to
nitrogen (N) losses through ammonia (NH3) emission or
nitrate (NO3−) leaching. Oxidized biochar has great
potential to mitigate N losses due to its strong adsorption
capacity; however, the effects of oxidized biochar in
different soils treated with slurry are currently unclear.
Here, we investigated the effect of untreated and oxidized
biochar (applied at a rate of 50 kg C m−3 slurry) on
reducing N losses in a laboratory experiment with three
different soils (loamy sand, sandy loam, loam) amended with
cattle slurry at an application rate of 73 kg N ha−1.
Oxidized biochar reduced NH3 emissions by $64–75\%$ in all
soils, whereas untreated biochar reduced NH3 emissions by
$61\%$ only in the loamy sand. Oxidized biochar
significantly reduced the NO3− content in the soil
solution of the loamy sand in the early phase of the
incubation and led to a significantly higher NO3−
concentration in the same soil compared with the slurry-only
treatment at the end of the experiment, indicating a
significant increase in NO3− retention in this organic
C–poor soil. We conclude that oxidized biochar can reduce
N losses, both in the form of NH3 emission and NO3−
leaching, from cattle slurry applied to soil, particularly
in soil with soil organic carbon $content <1\%$ and pH <5
(i.e., oxidized biochar can serve as a means for improving
the quality of marginal and acidic soils).},
cin = {IBG-3},
ddc = {630},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
pubmed = {36327389},
UT = {WOS:000881855100001},
doi = {10.1002/jeq2.20424},
url = {https://juser.fz-juelich.de/record/917543},
}