Soil fertility maintenance with organic amendments to orange fleshed sweetpotato
dc.contributor.author
Conz, Rafaela F.
dc.contributor.author
Six, Johan
dc.contributor.author
Andrade, Maria I.
dc.contributor.author
Pereira, Engil I.P.
dc.date.accessioned
2021-03-26T11:59:46Z
dc.date.available
2021-01-27T06:18:06Z
dc.date.available
2021-02-05T08:58:01Z
dc.date.available
2021-03-26T11:59:46Z
dc.date.issued
2021-03
dc.identifier.issn
1385-1314
dc.identifier.issn
1573-0867
dc.identifier.other
10.1007/s10705-020-10111-8
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/465816
dc.description.abstract
Smallholders in sub-Saharan Africa traditionally cultivate orange-fleshed sweetpotato without soil fertility management, leading to soil nutrient mining and thereby threatening future food security. We set out to determine the potential of locally-accessible organic amendments and weed biomass management to secure crop nutritional quality and yield while maintaining soil fertility. Orange-fleshed sweet potato was fertilized with sole or co-application of poultry manure, cowpea residue, and inorganic fertilizer, combined with removal or incorporation of biomass residue from the fallow period. Non-amended control represented current farmers practice. Poultry manure fertilization, in sole or co-application with inorganic fertilizer, maintained storage root yield from the first to the second season, averaging 7.7 t ha−1. Conversely, non-amended control decreased storage root yield by 61% from the first to the second season. Poultry manure with weed biomass incorporation maintained total soil C and N at 14.4 g kg−1 and 1.1 g kg−1, respectively, after two growing seasons. Poultry manure co-applied with inorganic fertilizer decreased total C and N by 15% and 14% respectively. The changes in soil total C and N observed in this experiment provide basis to support management recommendations for farmers focusing on locally-sourced organic amendments. Poultry manure is the more reliable organic amendment to maintain sweet potato agricultural performance and soil fertility, with potential to support long-term sweet potato cultivation. The negative effect of inorganic fertilizer on total soil nutrient concentration after two seasons needs consideration to avoid soil fertility mismanagement.
en_US
dc.language.iso
en
en_US
dc.publisher
Springer
en_US
dc.subject
Organic fertilizer
en_US
dc.subject
Poultry manure
en_US
dc.subject
Weed biomass incorporation
en_US
dc.subject
Crop residue
en_US
dc.title
Soil fertility maintenance with organic amendments to orange fleshed sweetpotato
en_US
dc.type
Journal Article
dc.date.published
2021-01-09
ethz.journal.title
Nutrient Cycling in Agroecosystems
ethz.journal.volume
119
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Nutr Cycl Agroecosyst
ethz.pages.start
213
en_US
ethz.pages.end
229
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Dordrecht
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::03982 - Six, Johan / Six, Johan
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::03982 - Six, Johan / Six, Johan
ethz.date.deposited
2021-01-27T06:18:09Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-03-26T11:59:55Z
ethz.rosetta.lastUpdated
2023-02-06T21:38:47Z
ethz.rosetta.versionExported
true
ethz.COinS
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