Impact of science on African agriculture and food security

Challenges facing African agriculture -- The role of impact assessment in evaluating agricultural investments in Eastern and Southern Africa -- Economics of wheat research in Kenya -- Impact of sorghum research and development in Zimbabwe -- Ex-ante analysis of the sorghum and millet improvement programme (SMIP) -- Impact of pearl millet research and development in Namibia -- Economic impact of maize research in Tanzania -- Economic returns from livestock research and development in Tanzania: 1966-1995 -- Impact of the Russian wheat aphid control program in South Africa -- The impact of public investment in maize research in Kenya -- Impact of maize technology development and transfer in Ethiopia -- Evaluating agricultural research and extension in Tanzania -- Impact assessment of sorghum research in Zambia -- The economic impact of investments in cassava research in Uganda -- Impact assessment of groundnut research in Zimbabwe -- The rate of return to wine grape research and technology development in South Africa -- Socio-economic impact of lachenalia research in South Africa -- Impact assessment of sunflower in Zimbabwe -- Impact assessment of cotton research in Zimbabwe: 1970-1995 -- The socio-economic impact of proteaceae research and technology development in South Africa -- Impact assessment of the biological control of prosopis species in the Britstown de Aar District, South Africa -- Socio-economic impact of the control of ticks and tick-borne diseases in South Africa -- Impact of investments in livestock research and development programs in South Africa -- Overview of impact assessment methodologies