Response of cowpea to sowing date and maize plant population in a Sudan savannah environment

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationUniversité du Béninen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationAhmadu Bello Universityen
cg.contributor.crpGrain Legumes
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.howPublishedFormally Publisheden
cg.issn0041-3216en
cg.issue1en
cg.journalTropical Agricultureen
cg.reviewStatusPeer Reviewen
cg.subject.iitaCOWPEAen
cg.subject.iitaGRAIN LEGUMESen
cg.subject.iitaMAIZEen
cg.volume92en
dc.contributor.authorEwansiha, S.U.en
dc.contributor.authorKamara, A.en
dc.contributor.authorChiezey, U.F.en
dc.contributor.authorOnyibe, J.E.en
dc.date.accessioned2016-07-12T14:02:51Zen
dc.date.available2016-07-12T14:02:51Zen
dc.identifier.urihttps://hdl.handle.net/10568/76140
dc.titleResponse of cowpea to sowing date and maize plant population in a Sudan savannah environmenten
dcterms.abstractMaize cultivation has recently expanded to the West African Sudan savannah and has the potential to play a key role in the cropping systems of the region where intercrop yields have been low. Staggering planting date and manipulating plant population of component crops are potential ways to improve yields of intercrops. A field trial was conducted to investigate the performance of contrasting cowpea cultivars when sown at different dates under varying maize plant populations at Minijibir in the Sudan savannah of Nigeria in 2008 and 2009. The trial was laid out in a randomized complete block design with split-split-plot arrangement and replicated four times. Planting date (four and six weeks after sowing maize) formed the main plot; plant population (0, 17,777, 26,666 and 53,333 plants ha-1 ) was assigned to subplots and cowpea cultivars to sub-sub-plots. Results showed that the best grain yield potential for intercropped cowpea was achieved by sowing early in low to moderate maize plant populations. Early sowing was more conducive to achieving a higher number of branches, higher number of peduncles, higher number of pods, and higher fodder and grain yields. Cowpea performance reduced progressively with increase in maize plant population because of increased shading from maize plants. Growing cowpea under high maize population was more favourable for indeterminate cowpea cultivar whereas, growing under zero to moderate maize populations favoured semi-determinate cowpea cultivar most in grain production. Thus, when planning to grow cowpea with maize at full maize crop, farmers may need to seed indeterminate cowpea cultivar early under maize. At reduced maize plant populations, growing maize with semi-determinate cowpea cultivar will do. However, choice of maize plant population to use may depend on the income, food nutrition and feed needs of the farmer.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.bibliographicCitationEwansiha, S.U., Kamara, A.Y., Chiezey, U.F. & Onyibe, J.E. (2015). Response of cowpea to sowing date and maize plant population in a Sudan savannah environment. Tropical Agriculture 92(1): 80-91.en
dcterms.extent80-91en
dcterms.issued2015-01-15
dcterms.languageen
dcterms.subjectmaizeen
dcterms.subjectplanting dateen
dcterms.subjectplant populationen
dcterms.subjectintercroppingen
dcterms.subjectcowpeasen
dcterms.typeJournal Article

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