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dc.contributor.authorUnamma, R.P.
dc.contributor.authorAkobundu, I.
dc.date.accessioned2019-12-04T11:27:44Z
dc.date.available2019-12-04T11:27:44Z
dc.date.issued1989
dc.identifier.citationUnamma, R. & Akobundu, I. (1989). Effects of tropical weeds on yield in white yam (Dioscorea rotundata Poir). Weed Research, 29(1), 1-6.
dc.identifier.issn0043-1737
dc.identifier.urihttps://hdl.handle.net/20.500.12478/5000
dc.description.abstractThe effects of tropical weeds on the yield of while yam were studied outdoors in wooden boxes. When the foliage and roots of weeds were in physical contact with the crop until harvest (full interference), tuber yield of yam was reduced by 76–79% of that obtained under weed‐free conditions over 3 years of study. When there was no physical contact between roots of crop and weeds, the leachate from the weed zone caused tuber yield reductions of 42, 40 and 38% in 1978, 1979 and 1980, respectively, when it was applied to the yam zone. This leachate also reduced leaf area index (LAI) in the yam crop but the adverse effects on yam root and shoot biomass were less pronounced. This technique made it possible to separate competitive interference from allelopathic interference of tropical weeds with the yam crop.
dc.language.isoen
dc.subjectWeeds
dc.subjectYams
dc.subjectHarvesting
dc.subjectSoil
dc.subjectNutrients
dc.titleEffects of tropical weeds on yield in white yam (Dioscorea rotundata Poir)
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR single centre
cg.iitasubjectWeeds
cg.iitasubjectYam
cg.iitasubjectFood Security
cg.iitasubjectCrop Husbandry
cg.iitasubjectPost-Harvesting Technology
cg.iitasubjectNutrition
cg.accessibilitystatusLimited Access
local.dspaceid102263
cg.identifier.doihttps://doi.org/10.1111/j.1365-3180.1989.tb00833.x


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