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dc.contributor.author
Traoré, Ouakoltio Y.A.
dc.contributor.author
Kiba, Delwendé I.
dc.contributor.author
Bünemann, Else K.
dc.contributor.author
Oberson, Astrid
dc.date.accessioned
2020-11-20T07:26:55Z
dc.date.available
2020-11-20T06:56:02Z
dc.date.available
2020-11-20T07:26:55Z
dc.date.issued
2020-10-29
dc.identifier.other
10.1002/agg2.20111
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/452133
dc.identifier.doi
10.3929/ethz-b-000452133
dc.description.abstract
On nutrient‐depleted Lixisols from Burkina Faso, nutrient acquisition by crops and soil microbes mainly relies on the limited amounts of mineral and organic fertilizers applied by small‐scale farmers. The objective of this study was to determine simultaneously the uptake of nitrogen (N) and phosphorus (P) contained in organic and mineral fertilizers by sorghum [Sorghum bicolor (L.) Moench ] and soil microbial biomass. Double 15N and 33P direct and indirect labeling techniques were applied in a pot experiment to determine the contributions of different fertilizers to sorghum N and P uptake during 52 d of growth. In parallel, soil respiration, available, and microbial N and P were tracked in an incubation experiment. Sorghum derived 83–90% of P from fertilizers. Nitrogen from cattle manure was poorly available, contributing only 20% of the N taken up by sorghum. Water‐soluble mineral fertilizers increased soil N and P availability, resulting in the highest total N and P uptake by sorghum from fertilizers and soil among all treatments. The application of cowpea [Vigna unguiculata (L.) Walp.] residues induced microbial N and P immobilization, reducing sorghum N and P uptake to the level of the non‐fertilized treatment. The use of double 15N and 33P labeling elucidated the impact of fertilizers on soil nutrient pools. The low plant N/P ratio suggested N limitation for sorghum in the manure treatment. Cowpea residues were inefficient for sorghum nutrition, but they increased soil microbial nutrient pools. This study gives insights on the potential effects of legume residues used as green manure to build soil fertility.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Nitrogen and phosphorus uptake from isotope‐labeled fertilizers by sorghum and soil microorganisms
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Agrosystems, Geosciences & Environment
ethz.journal.volume
3
en_US
ethz.journal.issue
1
en_US
ethz.pages.start
e20111
en_US
ethz.size
17 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03427 - Frossard, Emmanuel / Frossard, Emmanuel
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03427 - Frossard, Emmanuel / Frossard, Emmanuel
en_US
ethz.date.deposited
2020-11-20T06:56:12Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-11-20T07:27:11Z
ethz.rosetta.lastUpdated
2021-02-15T20:51:14Z
ethz.rosetta.versionExported
true
ethz.COinS
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