The influences of cropping systems on weed communities of rice in Côte d'Ivoire, West Africa

Simple item page
dc.contributor.authorKent, R.en
dc.contributor.authorJohnson, D. E.en
dc.contributor.authorBecker, M.en
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialCote d'Ivoireen
dc.coverage.spatialWest Africaen
dc.date.accessioned2016-04-19T19:10:53Zen
dc.date.available2016-04-19T19:10:53Zen
dc.date.issued2001en
dc.descriptionMetadata only recorden
dc.description.abstractIn West Africa agricultural land use for rice production is changing rapidly with increased cropping intensity in some areas. Studies were conducted to examine how the different cropping systems are reflected in rice weed populations. Weed species were surveyed on 126 rice farms in the humid forest to the moist savannah zones of Côte d'Ivoire. Two additional surveys were undertaken in a peri-urban area of the savannah zone to examine the effects water control and cropping diversification on weed species in lowland rice systems. Multivariate techniques were used to describe the weed communities encountered. Weed species in upland rice differed between forest and savannah zones with Chromolaena odorata being common in the former and Platosoma africanum and Mariscus cylindristachus were associated with the savannah. Bacopa decumbens, Fimbristylis littoralis, Sphenochlea zeylanica and Echinochloa colona were common in both forest and savannah lowlands and, the sedges, Cyperus difformis and Cyperus iria, were particularly abundant in the savannah. Dissimilarities in species composition were found between unimproved and improved lowland fields in the savannah zone. These differences can be explained largely by difference in water management and hydrology, rather than by cropping intensification. Weed biomass in irrigated systems was lower than in open or bunded rainfed fields, though there were no differences in grain yield. Sustained flooding, associated with land use intensification, favoured a shift towards Cyperus iria and Sphenochlea zeylanica. In crop rotations where vegetables are grown during the dry season, Cynodon dactylon and Cyperus rotundus were more common.en
dc.format.mimetypetext/plainen
dc.identifier1836en
dc.identifier.citationAgriculture, Ecosystems and Environment 87(3): 299-307en
dc.identifier.issn0167-8809en
dc.identifier.urihttp://hdl.handle.net/10919/66407en
dc.language.isoen_USen
dc.publisherElsevier Science B.Ven
dc.rightsIn Copyrighten
dc.rights.holderCopyright 2001 Elsevier Science B.Ven
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectIrrigationen
dc.subjectWater managementen
dc.subjectEcologyen
dc.subjectCorrespondence analysisen
dc.subjectWest Africaen
dc.subjectEcosystem Farm/Enterprise Scaleen
dc.titleThe influences of cropping systems on weed communities of rice in Côte d'Ivoire, West Africaen
dc.typeAbstracten
dc.type.dcmitypeTexten

Files

Collections

Sustainable Agriculture and Natural Resource Management (SANREM) Knowledgebase