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@ARTICLE{RoblesAguilar:866805,
author = {Robles-Aguilar, Ana A. and Schrey, Silvia D. and Postma,
Johannes A. and Temperton, Vicky M. and Jablonowski, Nicolai
D.},
title = {{P}hosphorus uptake from struvite is modulated by the
nitrogen form applied},
journal = {Journal of plant nutrition and soil science},
volume = {183},
number = {1},
issn = {1436-8730},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2019-05870},
pages = {80-90},
year = {2019},
abstract = {Next to nitrogen, phosphorus (P) is the most limiting
nutrient for plant production worldwide. To secure food
production, new nutrient management strategies using
alternative P sources instead of mined P fertilizers need to
be implemented. Struvite (MgNH4PO4 · 6 H2O) is a promising
example of a recycled mineral P fertilizer. Besides positive
agronomic results regarding crop yields, further
investigations are required to improve the use efficiency of
the product and thereby increase its value. Using an
automated plant phenotyping platform, we investigated the
dynamic response to struvite by two plant species (lupine
and maize) with diverse P acquisition strategies in an
acidic sandy substrate. Although at three weeks after
germination both maize and lupine had reduced leaf area in
the struvite treatments compared to the commercial triple
superphosphate (TSP), from week four onwards struvite plants
grew larger than the TSP‐treated plants, indicating a slow
release fertilizing effect. Greater P uptake efficiency (g /
root length), but reduced root length were observed in the
combined treatment of struvite and ammonium, in comparison
to struvite and nitrate. We propose that rhizosphere
acidification in response to ammonium uptake may enhance P
recovery from struvite. A possible additional acidification
effect by lupine root exudation might explain the higher P
uptake efficiency in this species compared to maize. We
conclude that struvite combined with ammonium can be used as
a sustainable slow‐release P fertilizer on acidic sandy
soils.},
cin = {IBG-2},
ddc = {640},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000498292400001},
doi = {10.1002/jpln.201900109},
url = {https://juser.fz-juelich.de/record/866805},
}