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Intermediate maturing soybean produce multiple benefits at 1:2 maize: soybean planting density

dc.contributor.authorSimbine, M.G.
dc.contributor.authorBaijukya, Frederick P.
dc.contributor.authorOnwonga, R.N.
dc.date.accessioned2019-12-04T11:30:05Z
dc.date.available2019-12-04T11:30:05Z
dc.date.issued2018
dc.identifier.citationSimbine, M.G., Baijukya, F.P. & Onwonga, R.N. (2018). Intermediate maturing soybean produce multiple benefits at 1:2 maize: soybean planting density. Journal of Agricultural Science, 10(9), 29-46.
dc.identifier.issn1916-9752
dc.identifier.urihttps://hdl.handle.net/20.500.12478/5183
dc.descriptionOpen Access Journal; Published online: 15 Aug 2018
dc.description.abstractA study was conducted to identify the most suitable intercropping arrangement in smallholder farms in Western Kenya. Biomass and N (nitrogen)-accumulation, N2 fixation and grain yield of maize and soybeans grown as intercrops at three planting densities were assessed. The study was conducted in four seasons. Three soybean varieties, Namsoy 4m, SC Squire and TGx1987-18F, were used in the experiment. Maize: soybean planting densities 1:1 (D1), 1:2 (D2), 1:3 (D3) as well as sole soybean (SS) and sole maize (SM) were tested. Higher biomass, N-accumulation, and N-fixed in the order 3.8 Mg ha-1, 260 kg ha-1 and 161 kg ha-1 respectively, were recorded in D3 with long maturing variety TGx1987-18F. Conversely, higher soybean grain yield < 2.4 Mg ha-1 was achieved by intermediate maturing SC Squire in D3. The highest maize yield in the intercrop was obtained in D1. N balance calculations indicated that planting TGx1987-18F resulted in an addition of 6 to 67 kg N ha-1, while SC Squire and Namsoy 4 m removed 3 to 89 kg N ha-1 when soybean grain was removed from the field. The differences in N balances between the intercrops depended on the N-fixed and the amount of N in harvested soybean and maize grain. Greater land equivalent ratio < 1.75 were obtained with SC Squire and Namsoy 4m in D2. We concluded that intermediate maturing soybean have multiple benefits for farmers in Western Kenya at 1:2 maize: soybean planting density provided that the practice is accompanied with good soil and crop management practices.
dc.description.sponsorshipAlliance for a Green Revolution in Africa
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent29-46
dc.language.isoen
dc.rightsCC-BY-4.0
dc.subjectSoybeans
dc.subjectMaize
dc.subjectIntercropping
dc.subjectSmallholders
dc.subjectFarmers
dc.subjectVarieties
dc.subjectKenya
dc.subjectIntensification
dc.titleIntermediate maturing soybean produce multiple benefits at 1:2 maize: soybean planting density
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpClimate Change, Agriculture and Food Security
cg.contributor.crpGrain Legumes
cg.contributor.affiliationUniversity of Nairobi
cg.contributor.affiliationTshwane University of Technology
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryKenya
cg.creator.identifierFrederick Baijukya: 0000-0003-2586-2013
cg.researchthemeNATURAL RESOURCE MANAGEMENT
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectClimate Change
cg.iitasubjectFarming Systems
cg.iitasubjectGrain Legumes
cg.iitasubjectMaize
cg.iitasubjectNatural Resource Management
cg.iitasubjectSmallholder Farmers
cg.iitasubjectSoybean
cg.journalJournal of Agricultural Science
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid102729
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.5539/jas.v10n9p29


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