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Prevalence and severity of bacterial blight and anthracnose diseases of cassava in different agroecological zones of Nigeria

dc.contributor.authorOnyeka, T.J.
dc.contributor.authorOwolade, O.F.
dc.contributor.authorOgunjobi, A.A.
dc.contributor.authorDixon, Alfred G.O.
dc.contributor.authorOkechukwu, R.U.
dc.contributor.authorBamkefa, B.
dc.date.accessioned2019-12-04T11:15:06Z
dc.date.available2019-12-04T11:15:06Z
dc.date.issued2008
dc.identifier.citationOnyeka, T.J., Owolade, O.F., Ogunjobi, A.A., Dixon, A.G.O., Okechukwu, R. & Bamkefa, B. (2008). Prevalence and severity of bacterial blight and anthracnose diseases of cassava in different agro-ecological zones of Nigeria. African Journal of Agricultural Research, 3(4), 297-304.
dc.identifier.issn1991-637X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2915
dc.descriptionPublished online: 30 April 2008
dc.description.abstractGeo-referenced surveys were conducted in 2001 and 2003 to assess the prevalence and severity of cassava bacterial blight (CBB) and cassava anthracnose disease (CAD) in different agro-ecological zones of Nigeria. A total of 132 fields were visited in 2001 as follow: humid forest (HF) 42, derived savannah (DS) 38, southern guinea savannah (SGS) 16, northern guinea savannah (NGS) 16 and Sudan savannah (SS) 20. In 2003, 277 fields were visited: HF (83), DS (143), SGS (22), NGS (11), and SS (18). CBB prevalence was greater than 70% in all ecozones in 2001; 33.7% in HF, 65.7% in DS and greater than 90% in others in 2003. CAD prevalence was greater than 90% in HF for the two surveys, 44.7% and 61.5% for 2001 and 2003 respectively in DS, while it was not observed in the other zones. In both surveys, more than 80% of CBB infected fields in all ecozones were moderately severe, except in SS where 47% of fields in 2003 were highly severe. In both HF and DS, more than 30% of fields in 2001, and less than 20% in 2003, had highly severe CAD symptoms. Prevalence of CBB was negatively correlated with annual precipitation and positively correlated with maximum temperature of the ecozones, while prevalence of CAD had strong positive relationship with the annual precipitation and negative association with maximum temperature. The distribution patterns of the diseases found in this study provide a baseline for disease management programme in the rapidly expanding cassava industry in Nigeria, and implications of the results for cassava industry were discussed.
dc.description.sponsorshipGovernment of Nigeria
dc.description.sponsorshipNiger Delta Development Commission
dc.description.sponsorshipShell Petroleum Development Company
dc.description.sponsorshipUnited States Agency for International Development
dc.language.isoen
dc.subjectAnthracnose
dc.subjectBacterial Blight
dc.subjectCassava
dc.subjectColletotrichum Gloeosporioides Prevalence
dc.subjectSeverity
dc.subjectXanthomonas Axonopodis
dc.subjectCassava Industry
dc.subjectAgroecological Zones
dc.titlePrevalence and severity of bacterial blight and anthracnose diseases of cassava in different agroecological zones of Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationInstitute of Agricultural Research and Training, Nigeria
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.iitasubjectDisease Control
cg.iitasubjectFarm Management
cg.iitasubjectFood Security
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.accessibilitystatusOpen Access
local.dspaceid94016


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