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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

The historical view of cassava as “a poor man crop” in Africa has long limited efforts to fully exploit its commercial potential as raw material in the production of food, feed and industrial products. This situation is now changing, led by special projects which promote cassava-based agric busin...


Ntawuruhunga, PheneasJames, B.Sanni, L.O.Sandifolo, V.Tarawali, G.Okechukwu, R.U.Abass, A.[Inter-project linkages to create cassava enterprises for expanded markets and utilization]Inter-project linkages to create cassava enterprises for expanded markets and utilization

Ex ante evaluation of agricultural research for development projects has become important in recent years for priority setting, ex post impact assessment and learning about generalizability to other populations and contexts. We apply farm household and random utility modeling to baseline survey ...


Rusike, J.Jumbo, S.Ntawuruhunga, PheneasKawonga, J.M.James, B.Okechukwu, R.U.Manyong, Victor M.[Ex-ante evaluation of cassava research for development in Malawi: a farm household and random utility modeling approach]Ex-ante evaluation of cassava research for development in Malawi: a farm household and random utility modeling approach

EARRNET is one of the ASERACA networks whose mandate is research for development on cassava. Thefirst and second phases of the network’s activities were mostly characterized by biological research. Duringthe second phase, there was an emphasis to shifting to post-harvest and market issues. For th...


Ntawuruhunga, Pheneas[Strategies, choices, and program priorities for the Eastern Africa Root Crops Research Network]Strategies, choices, and program priorities for the Eastern Africa Root Crops Research Network

During the two 5-year consecutives phases ( 1994–1998 and 1999–2003) EARRNET operated considerably among the national cassava research programs of Burundi, Democratic Republic of Congo, Kenya, Madagascar, Rwanda, and Uganda. After 2000, the network expanded significantly with activities in Southe...


Ntawuruhunga, PheneasOkidi, J.[Eastern Africa Root Crops Research Network (EARRNET) legacy; performance report: 20042007]Eastern Africa Root Crops Research Network (EARRNET) legacy; performance report: 20042007

For quite some time, cassava breeding activities of the International Institute of Tropical Agriculture (IITA) in Uganda were mainly focused on developing genotypes resistant to cassava mosaic disease (CMD), which was the major biotic production constraint since the early 1990s. Although cassava ...


Ntawuruhunga, PheneasKiryowa, M.Okechukwu, R.Otim Okello, F.[Preliminary results of screening IITA improved germplasm for resistance to Cassava Brown Streak Disease (CBSD) in Uganda]Preliminary results of screening IITA improved germplasm for resistance to Cassava Brown Streak Disease (CBSD) in Uganda

In 1996, Cassava Mosaic Disease in Western Kenya depressed productivity and de-stabilized markets. The study assesses the effectiveness of breeding and disseminating CMD-resistant varieties in western Kenya by determining the extent of adoption and impact on farmers' income of the new varieties v...


Abele, S.Twine, Edgar E.Ntawuruhunga, PheneasTenywa, J.S.Nampala, P.Okori, P.Kyamuhangire, W.Adipala, E.Tusiome, G.Odendo, M.Obiero, H.Odenya, J.[Effectiveness of breeding and disseminating CMDresistant cassava varieties in western Kenya]Effectiveness of breeding and disseminating CMDresistant cassava varieties in western Kenya
Ntawuruhunga, PheneasLegg, J.P.Okidi, J.Okao-Okuja, G.Tadu, G.Remington, T.[Southern Sudan, Equatoria region, cassava baseline survey technical report]Southern Sudan, Equatoria region, cassava baseline survey technical report

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

This paper measures the economic impacts of IITA/SARRNET led cassava improvement research in Malawi and Zambia over the period 1990-2008. The data come from sample household surveys, expert opinion surveys, and a series of cassava improvement experiments conducted in the two countries. Past inves...


Alene, Arega D.Khataza, R.Ntawuruhunga, PheneasMahungu, N.M.Jumbo, S.[Economic impacts of cassava improvement in Malawi and Zambia]Economic impacts of cassava improvement in Malawi and Zambia

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