| dc.contributor.author | Ajayo, B. |
| dc.contributor.author | Badu-Apraku, B. |
| dc.contributor.author | Fakorede, M. |
| dc.contributor.author | Akinwale, R. |
| dc.date.accessioned | 2021-03-17T13:26:43Z |
| dc.date.available | 2021-03-17T13:26:43Z |
| dc.date.issued | 2021 |
| dc.identifier.citation | Ajayo, 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.issn | 2471-2086 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/7082 |
| dc.description.abstract | Maize (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.sponsorship | Bill & Melinda Gates Foundation |
| dc.format.extent | 381-400 |
| dc.language.iso | en |
| dc.subject | Maize |
| dc.subject | Agronomic Characters |
| dc.subject | Hybrids |
| dc.subject | Nitrogen |
| dc.subject | Plant Population |
| dc.subject | Nigeria |
| dc.subject | Plant Density |
| dc.title | Plant density and nitrogen responses of maize hybrids in diverse agroecologies of west and central Africa |
| dc.type | Journal Article |
| cg.contributor.crp | Maize |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | Obafemi Awolowo University |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.country | Nigeria |
| cg.coverage.hub | Headquarters and Western Africa Hub |
| cg.researchtheme | Biotech and Plant Breeding |
| cg.identifier.bibtexciteid | AJAYO:2021 |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Agronomy |
| cg.iitasubject | Maize |
| cg.iitasubject | Plant Breeding |
| cg.iitasubject | Plant Production |
| cg.journal | AIM Agriculture and Food |
| cg.notes | Open Access Article; Published online: 05 Feb 2021 |
| cg.accessibilitystatus | Open Access |
| cg.reviewstatus | Peer Review |
| cg.usagerightslicense | Creative Commons Attribution 4.0 (CC BY 0.0) |
| cg.targetaudience | Scientists |
| cg.identifier.doi | https://dx.doi.org/10.3934/agrfood.2021023 |
| cg.iitaauthor.identifier | Babatope Samuel Ajayo: 0000-0002-4167-2263 |
| cg.iitaauthor.identifier | BAFFOUR BADU-APRAKU: 0000-0003-0113-5487 |
| cg.futureupdate.required | No |
