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Legg, J.P.Lava Kumar, PMakeshkumar, TTripathi, LeenaFerguson, MoragKanju, EdwardNtawuruhunga, PheneasCuéllar, Wilmer J.[Cassava virus diseases: biology, epidemiology, and management]Cassava virus diseases: biology, epidemiology, and management

Cassava brown streak disease (CBSD) has emerged as a major threat to cassava ( Manihot esculenta ) in eastern and southern Africa. CBSD was first reported in Malawi in the 1950s, but little data on the distribution and epidemiology of the disease are available. A diagnostic survey was therefore ...


Mbewe, W.Kumar, P.Changadeya, W.Ntawuruhunga, PheneasLegg, J.P.[Diversity, distribution and effects on cassava cultivars of Cassava Brown Streak Viruses in Malawi]Diversity, distribution and effects on cassava cultivars of Cassava Brown Streak Viruses in Malawi

This study was conducted to evaluate the growth and yield stability of cassava mosaic disease (CMD) resistant breeding populations clones against early drought. Field trials were planted using 200 CMD resistant clones and 7 local landraces in a randomised complete block design with 3 replicates a...


Babirye, A.Ntawuruhunga, PheneasEdema, R.[Cassava mosaic disease resistant clones’ growth and yield are prone to early drought stress]Cassava mosaic disease resistant clones’ growth and yield are prone to early drought stress

Cassava is the main food crop for an estimated 30% of the population in Zambia where yields of 5.8 t/ha are some of the lowest of any major cassava-producing country. A study was conducted to characterize yield responses of Zambian cassava genotypes to cassava mosaic disease (CMD), as well as the...


Tembo, M.Mataa, M.Legg, J.P.Chikoti, Patrick ChizaNtawuruhunga, Pheneas[Cassava mosaic disease: incidence and yield performance of cassava cultivars in Zambia]Cassava mosaic disease: incidence and yield performance of cassava cultivars in Zambia

Research aimed at selecting varieties of cassava (Manihot esculenta Crantz) with potential for high storage root yields through identification of stable yield components that can be used as selection criteria was carried out at three locations of different altitudes in Uganda. Multiple regression...

Une recherche visant à sélectionner des variétés potentielles à haut rendement en tubercules du manioc (Manihot esculenta Crantz) par identification des composantes stables de rendement qui peuvent étre utilisées comme critères de selection a été conduite dans trois localités de differentes altit...


Ntawuruhunga, PheneasRubaihayo, P.Whyte, J.Dixon, A.Osiru, D.[Inter-relationships among traits and path analysis for yield components of cassava: a search for storage root yield indicators]Inter-relationships among traits and path analysis for yield components of cassava: a search for storage root yield indicators

Genotype by environment interaction (G x E) is a major problem in the study of quantitative traits as it complicates the interpretation of genotypes evaluation experiments and makes predications of performance difficult. In order to disentangle the genetic and GxE effects and get meaningful inter...

L'interaction entre génotype et environnement est un problème majeur dans l' étude des caractères quantitatifs puisqu'il complique l'interprétation de l'évaluation des génotypes et rend difficile la prediction de la performance du rendement. En vue de séparer la génétique des effects de l'interac...


Ntawuruhunga, PheneasRubaihayo, P.Whyte, J.Dixon, A.Osiru, D.[Additive main effects and multiplicative interaction analysis for storage root yield of cassava genotypes evaluated in Uganda]Additive main effects and multiplicative interaction analysis for storage root yield of cassava genotypes evaluated in Uganda

This paper estimates the economic impacts of cassava research and extension in Malawi and Zambia over the period 1990-2008. The data come from sample household surveys, planting material production records, and a series of cassava improvement experiments conducted in the two countries. Past inves...


Alene, A.Khataza, R.Chibwana, C.Ntawuruhunga, PheneasMoyo, C.[Economic impacts of cassava research and extension in Malawi and Zambia]Economic impacts of cassava research and extension in Malawi and Zambia

Chikoti, Patrick ChizaTembo, M.Chisola, M.Ntawuruhunga, PheneasNdunguru, J.[Status of cassava mosaic disease and whitefly population in Zambia]Status of cassava mosaic disease and whitefly population in Zambia

Fertilizer application is known to increase crop yields and mitigate net soil nutrient mining due to continuous removal. However, smallholder farmers rarely apply adequate fertilizers because of high cost, limited availability and lack of awareness. An experiment was conducted to evaluate the eff...


Biratu, G.K.Elias, E.Ntawuruhunga, PheneasNhamo, N.[Effect of chicken manure application on cassava biomass and root yields in two agro-ecologies of Zambia]Effect of chicken manure application on cassava biomass and root yields in two agro-ecologies of Zambia
Ntawuruhunga, PheneasOkidi, J.[EARRNET organised a cassava quality standards and policy consultative meeting for the East and Central Africa (ECA) Region]EARRNET organised a cassava quality standards and policy consultative meeting for the East and Central Africa (ECA) Region

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