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@INPROCEEDINGS{Schreiber:828385,
author = {Schreiber, Christina and Harrison, Lucy and Schrey, Silvia
and Ackermann, Bärbel and Nedbal, Ladislav and Hofmann,
Diana and Schiedung, Henning and Amelung, Wulf and
Mettler-Altmann, Tabea and Sadowsky, Andres and Hotopp, Ines
and Ebenhöh, Oliver},
title = {{A}lgal{F}ertilizer project:{A}lgae deliering nutrients
from phosphorous-rich media to soil and wheat},
reportid = {FZJ-2017-02346},
year = {2017},
abstract = {As an application-oriented part of the AlgalFertilizer
Project, we cultivated Chlorella vulgaris, IPPAS C1 in 3.6
m3 suspension in V-shaped plastic bag photobioreactors
(NovaGreen GmbH) in Jülich, Germany. The culture was grown
in batch regime in a P-rich medium. The thus produced algal
biomass was analyzed for nutrient content with special
regard to phosphorus and used as fertilizer to grow wheat in
a pot experiment under controlled phosphorus levels on
different substrates: sand and nutrient-poor ‘Null-Erde’
for controlled nutrient levels as well as a nutrient-rich
substrate (Dachstaudensubstrat, SoMi 513). The algal biomass
was mixed into the soil substrates either in form of
spray-dried powder or as a suspension of fresh cells
obtained by centrifugation to estimate P-exchange properties
of pre-treated and fresh biomass. Aiming at comparison to
standard Hoagland mineral fertilizer, we applied algae at
two different P-levels: high, corresponding to 45 kg(P)/ha
and low, corresponding to 4.5 kg(P)/ha. 150 pots were
prepared for the experiment. Each experimental variant was
represented by 10 pots of identical substrate and
fertilization treatment. One pre-germinated seed of wheat
(Triticum aestivum, var. Scirocco) was placed in each pot.
The plants were placed in a greenhouse on a robotic platform
that randomized position of individual pots and also ensured
uniform watering. Individual plants were moved regularly
with their pots into an imaging system that served to
quantify the plant growth. We also analyzed the dynamics of
nutrients in the soil. The results of the AlgalFertilizer
experiment lead us to conclude that microalgae are not only
very potent in sequestering phosphorus from nutrient rich
streams (Part 1 of this presentation) but that algal biomass
can be used as a very effective fertilizer and ameliorant of
nutrient-poor soils (Part 2 of this presentation).},
month = {Mar},
date = {2017-03-16},
organization = {IWA Conference on Algal Technologies
for Wastewater Treatment and Resource
Recovery, Delft (The Netherlands), 16
Mar 2017 - 17 Mar 2017},
subtyp = {Other},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582) / AF AlgalFertilizer -
AlgalFertilizer (20172303) / BioSC - Bioeconomy Science
Center (BioSC)},
pid = {G:(DE-HGF)POF3-582 / G:(BioSC)20172303 / G:(DE-Juel1)BioSC},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/828385},
}