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CABI Book Chapter

Impact of science on African agriculture and food security.

Book cover for Impact of science on African agriculture and food security.

Description

This book, which contains 24 chapters and organized into three major parts, compiles available evidence of the impact of agricultural research in Eastern and Southern Africa to facilitate the mobilization of much needed additional investments for agricultural research and development in the continent. Part I addresses current issues, challenges and contributions in African agricultural development...

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Chapter 12 (Page no: 127)

Evaluating agricultural research and extension in Tanzania: the production function approach.

Agricultural research in Tanzania began in 1923 on sorghum and cotton. Since then, the number of research stations and institutions involved in agricultural research has increased. However, there are very few evaluations of the performance of agricultural research. This study uses the production function approach to assess the efficiency of investments in agricultural research and extension from 1971 to 1992. Results of the regression analysis showed that the total factor productivity for crop production in Tanzania is responsive to expenditures on research while it is not responsive to expenditure on agricultural extension. The model also shows that total factor productivity for crop production was not significantly responsive to the literacy rate of farmers, rainfall and lagged export earnings. The study concludes that since the marginal rate of return of investment in agricultural research is greater than the social rate of return, continued funding of agricultural research by both government and private sector is encouraged. The marginal rate of return was found to be low. This calls for efforts to improve extension and enhance the linkages between agricultural research and extension.

Other chapters from this book

Chapter: 1 (Page no: 1) Challenges facing African agriculture. Author(s): Babu, S. C. Anandajayasekeram, P. Rukuni, M.
Chapter: 2 (Page no: 13) The role of impact assessment in evaluating agricultural investments in Eastern and Southern Africa. Author(s): Anandajayasekeram, P. Babu, S. Rukuni, M. Workneh, S.
Chapter: 3 (Page no: 34) Economics of wheat research in Kenya. Author(s): Makanda, D. W. Oehmke, J. F.
Chapter: 4 (Page no: 46) Impact of sorghum research and development in Zimbabwe: the case of SV 2. Author(s): Anandajayasekeram, P. Martella, D. R. Sanders, J. Kupfuma, B.
Chapter: 5 (Page no: 57) Ex-ante analysis of the Sorghum and Millet Improvement Program. Author(s): Anandajayasekeram, P. Martella, D. R. Sanders, J. Kupfuma, B.
Chapter: 6 (Page no: 68) Impact of pearl millet research and development in Namibia: the case of Okashana 1. Author(s): Anandajayasekeram, P. Martella, D. R. Sanders, J. Kupfuma, B.
Chapter: 7 (Page no: 74) Economic impact of maize research in Tanzania. Author(s): Moshi, A. J. Anandajayasekeram, P. Kaliba, A. Martella, D. Mwangi, W. Shao, F. M.
Chapter: 8 (Page no: 83) Economic returns from livestock research and development in Tanzania: 1966-1995. Author(s): Kaliba, A. Fox, S. Norman, D.
Chapter: 9 (Page no: 91) Impact of the Russian wheat aphid integrated control programme in South Africa. Author(s): Marasas, C. N.
Chapter: 10 (Page no: 103) The impact of public investment in maize research in Kenya. Author(s): Karanja, D. D.
Chapter: 11 (Page no: 116) Impact of maize technology development and transfer in Ethiopia. Author(s): Zegeye, T. Tesfahun, G. Anandajayasekeram, P.
Chapter: 13 (Page no: 137) Impact assessment of sorghum research in Zambia. Author(s): Chisi, M.
Chapter: 14 (Page no: 147) The economic impact of investments in cassava research in Uganda. Author(s): Bua, A. Acola, G. Adupa, R. L. Otim-Nape, G. W. Baguma, Y. K. Sserunkuma, D. Manyong, V. Coulibaly, O.
Chapter: 15 (Page no: 152) Impact assessment of groundnut research in Zimbabwe. Author(s): Mazhangara, E. P. Anandajayasekeram, P. Mudhara, M. Martella, D. Murata, M.
Chapter: 16 (Page no: 161) The rate of return to wine grape research and technology development in South Africa. Author(s): Townsend, R. Zyl, J. van
Chapter: 17 (Page no: 171) Socio-economic impact of lachenalia research in South Africa. Author(s): Niederwieser, J. G.
Chapter: 18 (Page no: 184) Impact assessment of sunflower in Zimbabwe. Author(s): Murata, M. Anandajayasekeram, P. Mudhara, M. Martella, D. Mazhangara, E.
Chapter: 19 (Page no: 192) Impact assessment of cotton research in Zimbabwe: 1970-1995. Author(s): Mudhara, M. Anandajayasekeram, P. Kupfuma, B. Mazhangara, E.
Chapter: 20 (Page no: 199) The socio-economic impact of Proteaceae Research and Technology Development in South Africa. Author(s): Esterhuizen, J. M. C.
Chapter: 21 (Page no: 210) Impact assessment of the biological control of Prosopis species in the Britstown-De Aar District, South Africa. Author(s): Esterhuizen, J. M. C.
Chapter: 22 (Page no: 221) Socio-economic impact of the control of ticks and tick-borne diseases in South Africa. Author(s): Randela, R.
Chapter: 23 (Page no: 236) Impact of investments in livestock research and development programmes in South Africa. Author(s): Mokoena, M. R.
Chapter: 24 (Page no: 249) Overview of impact assessment methodologies. Author(s): Anandajayasekeram, P. Babu, S.

Chapter details

  • Author Affiliation
  • Institute of Continuing Education, Sokoine University of Agriculture, PO Box 3044, Morogor, Tanzania.
  • Year of Publication
  • 2007
  • ISBN
  • 9781845932671
  • Record Number
  • 20073254351