Mechanism of yield compensation in some accession of cowpea grown at different plant densities and environments

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cg.authorship.typesNot CGIAR developing country instituteen_US
cg.contributor.affiliationUniversity of Josen_US
cg.contributor.affiliationInternational Institute of Tropical Agricultureen_US
cg.coverage.countryNigeriaen_US
cg.coverage.iso3166-alpha2NGen_US
cg.coverage.regionAfricaen_US
cg.coverage.regionWestern Africaen_US
cg.howPublishedGrey Literatureen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.iitaCOWPEAen_US
cg.subject.iitaFOOD SECURITYen_US
cg.subject.iitaGRAIN LEGUMESen_US
cg.subject.iitaFOOD SYSTEMSen_US
cg.subject.sdgSDG 2 - Zero hungeren_US
dc.contributor.authorOdesina, I.S.en_US
dc.date.accessioned2025-02-27T10:26:24Zen_US
dc.date.available2025-02-27T10:26:24Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/173419en_US
dc.titleMechanism of yield compensation in some accession of cowpea grown at different plant densities and environmentsen_US
dcterms.abstractGrain yield of cowpea [Vigna unguiculata (L.) Walp.] in Nigerian savannas are low despite the cultivation of improved accessions. Amongst a host of production constraints, missing plant stand has been suggested to contribute to yield loss in cowpea. Gap-filling could be used as alternative to mitigate yield losses caused by stand reduction. This study, which was carried out in 2020, was aimed at investigating the mechanism of yield compensation in some accessions of cowpea in two savannah agro-ecologies at Minjibir and Shika in Northern Nigeria. The randomised complete block design in a split-plot arrangement in three replicates was used. The main plot consisted of four plant densities (33,333, 66,666, 99,999 and 133,333 plants ha-1) while the sub-plots consisted of six cowpea accessions (DANILA, IT08K-150-27, IT89KD-288, IT93K-452-1, IT98K-205-8 and IT99K-573-1-1). Results showed that plant density and environment affected grain yield. Total grain yield increased with increasing plant density. Generally, total grain yield was higher at Minjibir than at Shika. The highest total grain yield of 1,793.3 kg ha-1 was observed in the accession DANILA at 99,999 plants ha-1, while the lowest(1,100 kg ha-1) was observed in the accession IT98K-205-8 at 33, 333 plants ha-1. Stand count at harvest, leaf area index and intercepted photosynthetically active radiation and pod weight were positively correlated with total grain yield at both locations, suggesting that these traits could be considered for cowpea improvement. Cowpea growers and breeders could consider erect accessions (IT93K-452-1 and IT98K-205-8) and semi-erect accessions (IT99K-573-1-1 and IT08K-150-27) for cultivation at 133,333 plants ha-1 and prostrate accessions (IT89KD-288 and DANILA) at 99,999 plants ha-1 at Minjibir. The accession IT93K-452-1-1, IT98-205-8, IT99K-573-1-1 and IT08K-150-27 could be considered for cultivation at Shika, irrespective of plant density.en_US
dcterms.accessRightsLimited Accessen_US
dcterms.audienceScientistsen_US
dcterms.bibliographicCitationOdesina, I.S. (2024). Mechanism of yield compensation in some accession of cowpea grown at different plant densities and environments. Plant Science and Biotechnology, University of Jos, (134 p.).en_US
dcterms.descriptionBoukar, O.C. Omoigui, L. Ongom, P.O. Oyebode, G.O.en_US
dcterms.extent134 p.en_US
dcterms.issued2024-01en_US
dcterms.languageenen_US
dcterms.licenseCopyrighted; all rights reserveden_US
dcterms.subjectcowpeasen_US
dcterms.subjectgrainen_US
dcterms.subjectplanten_US
dcterms.typeThesisen_US

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