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dc.contributor.author
Knijnenburg, Jesper T.N.
dc.contributor.author
Hilty, Florentine M.
dc.contributor.author
Oelofse, Janro
dc.contributor.author
Buitendag, Riaan
dc.contributor.author
Zimmermann, Michael B.
dc.contributor.author
Cakmak, Ismail
dc.contributor.author
Grobler, Anne F.
dc.date.accessioned
2019-09-27T13:33:23Z
dc.date.available
2019-02-01T04:41:50Z
dc.date.available
2019-02-08T10:50:59Z
dc.date.available
2019-09-27T13:33:23Z
dc.date.issued
2018-12
dc.identifier.other
10.1186/s40538-018-0138-8
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/322284
dc.identifier.doi
10.3929/ethz-b-000322284
dc.description.abstract
Background Foliar iron (Fe) fertilization of crops may increase Fe concentrations in edible portions of plants and improve yield in soils with low available Fe. However, the role of foliar Fe fertilization in increasing seed Fe has not been studied in soybeans (Glycine max). In this study, the Pheroid® nutrient delivery technology was combined with FeSO4 or nanostructured FePO4 to develop potential new Fe foliar fertilizers. Eight different treatments including different combinations of FeSO4 and Pheroids were foliarly applied on field-grown soybeans in Northern Cape province in South Africa to investigate their influence on seed nutrient composition and yield. Results Confocal and optical microscopy images indicate that FeSO4 or FePO4 was not entrapped in the Pheroids but formed separate precipitates. The average seed Fe of the non-treated plants was 56 ± 3 mg kg−1, and none of the treatments (including the positive controls, FeSO4 and FeSO4 with citrate) significantly increased seed Fe over the control. There was also no significant change in yield or seed Zn, P, protein, or phytic acid. Thus, Pheroids as well as FeSO4 are not suitable as delivery system for Fe to soybean seeds due to Pheroid incompatibility with FeSO4 and poor dispersibility of FePO4. Conclusions Because none of the Fe treatments (including positive controls) affected seed Fe concentrations, foliar Fe application may not be effective to increase seed Fe in crops such as soybean that already have high native Fe.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Springer
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Biofortification
en_US
dc.subject
Iron
en_US
dc.subject
Foliar application
en_US
dc.subject
Soybean
en_US
dc.subject
Pheroids
en_US
dc.subject
Nanotechnology
en_US
dc.subject
Fertilizer
en_US
dc.title
Nano- and Pheroid technologies for development of foliar iron fertilizers and iron biofortification of soybean grown in South Africa
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2018-12-20
ethz.journal.title
Chemical and Biological Technologies in Agriculture
ethz.journal.volume
5
en_US
ethz.journal.issue
1
en_US
ethz.pages.start
26
en_US
ethz.size
10 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Heidelberg
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2019-02-01T04:41:53Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-02-08T10:51:16Z
ethz.rosetta.lastUpdated
2020-02-15T21:48:43Z
ethz.rosetta.versionExported
true
ethz.COinS
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