Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya

cg.authorship.typesCGIAR and advanced research institute
cg.contributor.affiliationInstitut Sénégalais de Recherches Agricoles
cg.contributor.affiliationKansas State University
cg.contributor.affiliationKitale Research Centre
cg.contributor.affiliationUniversité Cheikh Anta Diop de Dakar
cg.contributor.affiliationEastern Cereal and Oilseed Research Centre
cg.contributor.affiliationCentre de Coopération Internationale en Recherche Agronomique Pour le Développement
cg.contributor.affiliationUniversité de Montpellier
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationDeakin University
cg.contributor.crpWater, Land and Ecosystems
cg.contributor.donorBill & Melinda Gates Foundation
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.coverage.regionSub-Saharan Africa
cg.creator.identifierdidier lesueur: 0000-0002-6694-0869
cg.identifier.doihttps://doi.org/10.3390/su12093803
cg.isijournalISI Journal
cg.issn2071-1050
cg.issue9
cg.journalSustainability
cg.reviewStatusPeer Review
cg.subject.alliancebiovciatSOIL HEALTH
cg.subject.sdgSDG 15 - Life on land
cg.volume12
dc.contributor.authorFaye, A.
dc.contributor.authorStewart, Zachary P.
dc.contributor.authorNdung’u-Magiroi, K.
dc.contributor.authorDiouf, M.
dc.contributor.authorNdoye, I.
dc.contributor.authorDiop, T.
dc.contributor.authorDalpé, Y.
dc.contributor.authorPrasad, P.V.V.
dc.contributor.authorLesueur, D.
dc.date.accessioned2021-09-15T14:44:59Zen
dc.date.available2021-09-15T14:44:59Zen
dc.identifier.urihttps://hdl.handle.net/10568/114998
dc.titleTesting of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenyaen
dcterms.abstractThe aim of this study was to assess the potential of commercial mycorrhizal inoculants and a rhizobial inoculant to improve soybean yield in Kenya. A promiscuous soybean variety was grown in a greenhouse pot study with two representative soils amended with either water-soluble mineral P or rock P to assess product performance. The performance of selected mycorrhizal inoculants combined with a rhizobial inoculant (Legumefix) was then assessed with farmer groups in three agroecological zones using a small-plot, randomized complete block design to assess soybean root colonization by mycorrhiza, nodulation, and plant biomass production in comparison to rhizobial inoculant alone or with water-soluble mineral P. Greenhouse results showed highly significant root colonization by commercial mycorrhizal inoculant alone (p < 0.001) and in interaction with soil type (p < 0.0001) and P source (p < 0.0001). However, no significant effect was shown in plant P uptake, biomass production, or leaf chlorophyll index. In field conditions, the e ects of mycorrhizal and rhizobial inoculants in combination or alone were highly context-specific and may induce either a significant increase or decrease in root mycorrhizal colonization and nodule formation. Mycorrhizal and rhizobial inoculants in combination or alone had limited effect on plant P uptake, biomass production, leaf chlorophyll index, and grain yield. Though some mycorrhizal inoculants induced significant root colonization by mycorrhizal inoculants, this did not lead to higher soybean yield, even in soils with limited P content. Our results are further evidence that inoculant type, soil type, and P source are critical factors to evaluate commercial inoculants on a context-specific basis. However, our results highlight the need for the identification of additional targeting criteria, as inoculant type, soil type, and P source alone were not enough to be predictive of the response. Without the identification of predictive criteria for improved targeting, the economic use of such inoculants will remain elusive.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2020-05-07
dcterms.bibliographicCitationFaye, A.; Stewart, Z.P.; Ndung’u-Magiroi, K.; Diouf, M.; Ndoye, I.; Diop, T.; Dalpé, Y.; Prasad, P.V.V.; Lesueur, D.; (2020) Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya. Sustainability 12(9): 3803. 15 p. ISSN: 2071-1050en
dcterms.extent15 p.
dcterms.issued2020-05-07
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherMDPI
dcterms.subjectsoil inoculationen
dcterms.subjectroot colonizationen
dcterms.subjectsoil qualityen
dcterms.subjectinoculación del sueloen
dcterms.subjectcolonización de raícesen
dcterms.subjectcalidad del sueloen
dcterms.typeJournal Article

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