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dc.contributor.authorAjayo, B.
dc.contributor.authorBadu-Apraku, B.
dc.contributor.authorFakorede, M.
dc.contributor.authorAkinwale, R.
dc.date.accessioned2021-03-17T13:26:43Z
dc.date.available2021-03-17T13:26:43Z
dc.date.issued2021
dc.identifier.citationAjayo, B., Badu-Apraku, B., Fakorede, M. & Akinwale, R. (2020). Plant density and nitrogen responses of maize hybrids in diverse agro-ecologies of West and Central Africa. AIMS Agriculture and Food, 6(1), 381-400.
dc.identifier.issn2471-2086
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7082
dc.description.abstractMaize (Zea mays L.) production in West and Central Africa is constrained by drought, low soil-N and Striga infestation. Breeders in the region have developed and commercialized extra-early and early-maturing hybrids (E-EH and EH), which combine high yield potentials with tolerance/resistance to the three stresses. Hybrids of both maturity groups are new to the farmers; thus, the urgent need to recommend appropriate agronomic practices for these hybrids. We investigated the responses of four hybrids belonging to extra-early and early-maturity groups to plant density (PD) and nitrogen (N) application in five agroecologies. The EHs consistently out-yielded the E-EHs in all the five agroecologies. The hybrids showed no response to N-fertilizer application above 90 kg ha-1. All interactions involving N had no significant effect on all traits except in few cases. The E-EHs and EHs had similar response to PD; their grain yield decreased as PD increased. Contrarily, flowering was delayed and expression of some other agronomic traits such as plant and ear aspects became poorer with increased PD. Optimal yield was obtained at approximately 90 kg N ha-1 and 66,666 plants ha-1. Most of the measured traits indicated high repeatability estimates (i.e. ≥ 60) across the N levels, PDs and environments. Evidently, the hybrids were intolerant of high PD.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent381-400
dc.language.isoen
dc.subjectMaize
dc.subjectAgronomic Characters
dc.subjectHybrids
dc.subjectNitrogen
dc.subjectPlant Population
dc.subjectNigeria
dc.subjectPlant Density
dc.titlePlant density and nitrogen responses of maize hybrids in diverse agroecologies of west and central Africa
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationObafemi Awolowo University
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidAJAYO:2021
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalAIM Agriculture and Food
cg.notesOpen Access Article; Published online: 05 Feb 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3934/agrfood.2021023
cg.iitaauthor.identifierBabatope Samuel Ajayo: 0000-0002-4167-2263
cg.iitaauthor.identifierBAFFOUR BADU-APRAKU: 0000-0003-0113-5487
cg.futureupdate.requiredNo


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