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Yam tuber and maize grain yield response to cropping system intensification in south-west Nigeria

dc.contributor.authorEnesi, R.O.
dc.contributor.authorHauser, S.
dc.contributor.authorLópez Montez, A.
dc.contributor.authorOsonubi, O.
dc.date.accessioned2019-12-04T11:30:05Z
dc.date.available2019-12-04T11:30:05Z
dc.date.issued2018
dc.identifier.citationEnesi, R.O., Hauser, S., Lopez-Montez, A. & Osonubi, O. (2018). Yam tuber and maize grain yield response to cropping system intensification in south-west Nigeria. Archives of Agronomy and Soil Science, 64(7), 953-966.
dc.identifier.issn0365-0340
dc.identifier.urihttps://hdl.handle.net/20.500.12478/5187
dc.descriptionOpen Access Article; Published online: 11 Dec 2017
dc.description.abstractFour factorial trials were conducted with yam (Dioscorea rotundata Poir.) at Ibadan, Nigeria from 2013 to 2015, investigating effects of (1) tillage (2) fertilizer (3) intercropping (4) yam plant densities. Yam tuber yields varied between years (2013: 16.44 Mg ha−1; 2014: 10.08 Mg ha−1; 2015 26.61 Mg ha−1). In 2013 neither tillage nor fertilizer affected tuber yields. In 2014 tillage increased yields (+25.4%, P < 0.0001), fertilizer reduced yield (−10.5%; P = 0.0046). In 2015 tillage increased tuber yields by 8.1% (ns), fertilizer application increased yield (+17.5%, P = 0.0017). Across the years, tuber yields increased (P < 0.01) with increasing yam density with a constant increase in 2013 up to the highest density, yet yields leveled out above 14,815 plants ha−1 in 2014 and 2015. Intercropping with maize (66,667 plants ha−1) reduced tuber yield by 42.62% in 2013, 44.52% in 2014 and 30.68% in 2015 (P < 0.01 all years) across all yam densities. Maize grain yield was higher in sole crop in 2 years. Fertilizer increased yields in all years (P < 0.0001). Maize yield had no response to the yam densities. Ridging had a negative effect on grain yield in 2015 (−0.3 Mg ha−1, P = 0.0002). Increasing plant density appears a safe measure to increase yam yields.
dc.format.extent953–966
dc.language.isoen
dc.rightsCC-BY-4.0
dc.subjectPlant Population
dc.subjectIntercropping
dc.subjectFertilizers
dc.subjectYams
dc.subjectDioscorea Rotundata
dc.subjectMaize
dc.subjectNigeria
dc.titleYam tuber and maize grain yield response to cropping system intensification in south-west Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.creator.identifierStefan Hauser: 0000-0002-6329-7783
cg.creator.identifierAntonio Jose Lopez-Montes: 0000-0001-5801-2475
cg.researchthemeNATURAL RESOURCE MANAGEMENT
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCrop Systems
cg.iitasubjectFarming Systems
cg.iitasubjectMaize
cg.iitasubjectNatural Resource Management
cg.iitasubjectYam
cg.journalArchives of Agronomy and Soil Science
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid102797
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/03650340.2017.1404580


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