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@INPROCEEDINGS{RoblesAguilar:256122,
author = {Robles Aguilar, Ana Alejandra and Temperton, Vicky and
Blossfeld, Stephan and Jablonowski, Nicolai David},
title = {{E}ffect of nitrogen form, p{H} and plant species in the
mobilization and acquisition of {P} from a recycled
phosphorus fertilizer},
reportid = {FZJ-2015-06131},
year = {2015},
abstract = {World phosphorus resources are limited. Therefore recycling
of phosphorus from waste materials is important, and
struvite (MgNH4PO46H2O) is a common precipitate recovered
from waste water treatments or during anaerobic digestion of
manure. Our approach is to evaluate how mobilization of
phosphorus may differ when two different species
(narrow–leaved Lupin and Maize) are grown in an acidic or
alkaline sand with phosphorus added as either struvite or as
superphosphate. Nitrogen was applied as ammonium or nitrate
as an important factor that could affect phosphorus
availability by changing soil pH. The parameters to evaluate
the mobilization of phosphorus from struvite were phosphorus
uptake, phosphorus present in the soil and comparison of
plant performance within the different treatments. Lupines
are capable of symbiotically fixing atmospheric nitrogen, as
well as to release phosphate-mobilizing carboxylates. These
two traits make lupines good candidates forstudying nutrient
mobilization in the rhizosphere. In order to observe if
citrate (mimicking root exudates) was able to make the P
from the struvite more available compared with water, our
study also included a flushing experiment with citrate in
columns filled with two different sands of acidic and
alkaline pH mixed with struvite. We predict that lupine
growing on alkaline sand will have better access to
phosphorus in struvite (than on acidic sand) due to its
ability to acidify the rhizosphere via exudation of
carboxylates. Thus we expect lupine to have higher biomass
when growing on alkaline sand with an ammonium supply.},
month = {Jun},
date = {2015-06-21},
organization = {Rhizosphere 4, Maastricht
(Netherlands), 21 Jun 2015 - 25 Jun
2015},
subtyp = {After Call},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/256122},
}