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Manihot esculenta.This paper which is based on information collected as part of Collaborative Study of Cassava in Africa (COSCA) provides information on cassava genotypes cultivated in sub-Saharan Africa. It shows that there is a high degree of turnover in the cassava genotypes cultivated. Farmer...


Nweke, F.Dixon, A.Asiedu, RobertFolayan, S.A.[Attributes of cassava varieties desired by farmers in subSaharan Africa]Attributes of cassava varieties desired by farmers in subSaharan Africa

Most cassava (Manihot esculenta Crantz) improvement programs depend on the range of variability available within the cultigen for breeding varieties adapted to target environments. Efforts by some programs to introduce additional variability from wild Manihot species into cassava have led to impr...


Asiedu, RobertHahn, S.K.Bai, K.V.Dixon, A.[Interspecific hybridization in the genus Manihot progress and prospects]Interspecific hybridization in the genus Manihot progress and prospects

Thirty isolates of Colletotrichum gloeosporioides f. sp. manihotis causal organism of cassava anthracnose disease (CAD), were collected from cankers on cassava stems in cassava-growing zones of Nigeria. Using a pathogenicity test, five virulent isolates (05FCN, 10FCN, 12FCN, 18FCN and 26FCN) were...


Fokunang, C.N.Ikotun, T.Dixon, A.[Mycelial growth, sporulation and spore germination of virulent Colletotrichum gloeosporiodes f. sp. manihotis isolates under selected growth conditions]Mycelial growth, sporulation and spore germination of virulent Colletotrichum gloeosporiodes f. sp. manihotis isolates under selected growth conditions

Stable as well as adaptable genotypes of high-yielding cassava cultivars, should be developed and made available to farmers, to ensure increases in cassava production in a target region or country in sub-Saharan Africa. As farmer-to-farmer contact is the primary means of diffusion of new crop var...


Dixon, A.Asiedu, RobertHahn, S.K.[Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture]Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture

Multilocational trials were conducted in several agroecological zones in West Africa to assess the magnitude of genotype x environment (G x E) interaction and to identify stable varieties which could be used in breeding programs in the region. The reaction of the varieties to major cassava diseas...


Otoo, J.Dixon, A.Asiedu, RobertOkeke, J.E.Maroya, N.Tougnon, K.Okoli, O.Tetteh, J.P.Hahn, S.K.[Genotype environment interaction studies with cassava]Genotype environment interaction studies with cassava

Major upland soils in the humid and sub humid zones of West Africa consist of low activity clays (LAC) Alfisols, Ultisols and Oxisols. Alfisols which are less leached and have a high base saturation are more dominant in the sub-humid zone. Chemically they are more fertile, but they have a low str...


Kanno, H.Dixon, A.Asiedu, RobertHahn, S.K.[Host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa Bondar) at IITA]Host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa Bondar) at IITA

Electronic insect-feeding monitors are increasingly being used to study the feeding behavior of piercing-sucking insects in relation to host resistance and biotypes. The original AC design has been modified several times to simplify and expand the signal generator and signal processor. We report ...


Noyes, S.Margolies, D.C.Reese, J.C.Dixon, A.Bramel-Cox, P.J.[Computer acquisition and analysis of insect feeding monitor data]Computer acquisition and analysis of insect feeding monitor data
Patino, M.Okechukwu, R.U.Ezedinma, C.Sanni, L.O.Lemchi, J.Ogbe, F.Akoroda, M.O.Tarawali, G.Okoro, E.Mkumbira, J.Ssemakula, G.N.Maziya-Dixon, B.B.Dixon, A.Geteloma, C.[Marketing of cassava products: cassava enterprises management series]Marketing of cassava products: cassava enterprises management series

An agroecologically-based germplasm enhancement strategy to further broaden the genetic base of cassava in selected ecologies of Africa was initiated by CIAT and IITA in 1990. Crosses are being made at CIAT, in Colombia, using parents adapted to four different agroecologies of South America with ...


Porto, M.C.Asiedu, RobertDixon, A.Hahn, S.K.[An agroecologically oriented introduction of cassava germplasm from Latin America into Africa]An agroecologically oriented introduction of cassava germplasm from Latin America into Africa

Research on the resistance of cassava to fire is scarce because ordinarily researchers would not set their cassava farms on fire for such evaluation. Stems rendered useless by fire were commonly reported by farmers but no information on root yields and shoot regeneration. This study compared the ...


Asadu, C.L.A.Unagwu, B.O.Dixon, A.Okechukwu, R.Ilona, P.Asadu, A.N.[Cassava, plantain and moringa grown in an Alfisol and their resilience to bush fire in eastern Nigeria]Cassava, plantain and moringa grown in an Alfisol and their resilience to bush fire in eastern Nigeria

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