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CABI Book Chapter

Crop improvement, adoption, and impact of improved varieties in food crops in sub-Saharan Africa.

Book cover for Crop improvement, adoption, and impact of improved varieties in food crops in sub-Saharan Africa.

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Chapter 2 (Page no: 7)

Investments in and impacts of crop improvement research in Africa.

This chapter aims to document evidence about agricultural research investments, describe patterns of change over time, and discuss the current state of knowledge and knowledge gaps. The chapter begins with a discussion of information sources and inherent challenges in assembling consistent time series from alternative sources. Important past studies are reviewed critically with an aim at synthesizing the current state of knowledge about agricultural R&D expenditures in sub-Saharan Africa (SSA). A short discussion follows of the role of agricultural R&D in promoting output and productivity in SSA. The chapter ends by discussing areas of agreement and disagreement. The analysis summarized in this chapter clearly implies that it is dangerous to make summary statements about region-wide trends. A region-wide analysis, as with most economic phenomena, masks important differences. It is suggested that to understand impacts of investments in SSA agricultural R&D focused studies are required and only through the aggregation of focused results can the whole picture be understood.

Other chapters from this book

Chapter: 1 (Page no: 1) The importance of generating and documenting varietal change in sub-Saharan Africa. Author(s): Walker, T. S. Alwang, J.
Chapter: 3 (Page no: 24) Relevant concepts and hypotheses in assessing the performance of food crop improvement in sub-Saharan Africa. Author(s): Walker, T. S.
Chapter: 4 (Page no: 35) Coverage, data and methods in assessing the performance of food crop improvement in sub-Saharan Africa. Author(s): Walker, T. S.
Chapter: 5 (Page no: 44) Genetic improvement of the crops in the 1998 initiative: historical context and exploratory analysis. Author(s): Walker, T. S.
Chapter: 6 (Page no: 74) The effectiveness of crop improvement programmes from the perspectives of varietal output and adoption: cassava, cowpea, soybean and yam in sub-Saharan Africa and maize in West and Central Africa. Author(s): Alene, A. D. Abdoulaye, T. Rusike, J. Manyong, V. Walker, T. S.
Chapter: 7 (Page no: 123) Assessing the effectiveness of agricultural R&D for groundnut, pearl millet, pigeonpea and sorghum in West and Central Africa and East and Southern Africa. Author(s): Ndjeunga, J. Mausch, K. Simtowe, F.
Chapter: 8 (Page no: 148) The performance of bean improvement programmes in sub-Saharan Africa from the perspectives of varietal output and adoption. Author(s): Muthoni, R. A. Andrade, R.
Chapter: 9 (Page no: 164) The effectiveness of potato and sweetpotato improvement programmes from the perspectives of varietal output and adoption in sub-Saharan Africa. Author(s): Labarta, R.
Chapter: 10 (Page no: 183) Evaluating the key aspects of the performance of genetic improvement in priority food crops and countries in sub-Saharan Africa: the case of rice. Author(s): Diagne, A. Kinkingninhoun-Medagbe, F. M. Amovin-Assagba, E. Nakelse, T. Sanni, K. Toure, A.
Chapter: 11 (Page no: 206) Assessing the effectiveness of maize and wheat improvement from the perspectives of varietal output and adoption in East and Southern Africa. Author(s): Groote, H. de Gitonga, Z. Mugo, S. Walker, T. S.
Chapter: 12 (Page no: 228) Varietal output and adoption in barley, chickpea, faba bean, field pea and lentil in Ethiopia, Eritrea and Sudan. Author(s): Yigezu, Y. A. Yirga, C. Aw-Hassan, A.
Chapter: 13 (Page no: 239) Scientific strength in rice improvement programmes, varietal outputs and adoption of improved varieties in South Asia. Author(s): Pandey, S. Velasco, M. L. Yamano, T.
Chapter: 14 (Page no: 265) Analysing scientific strength and varietal generation, adoption and turnover in Peninsular India: the case of sorghum, pearl millet, chickpea, pigeonpea and groundnut. Author(s): Charyulu, D. K. Bantilan, M. C. S. Laxmi, A. R. Moses, D. S.
Chapter: 15 (Page no: 294) Maize technologies and rural poverty reduction in Ethiopia. Author(s): Zeng, D. Alwang, J. Norton, G. W. Shiferaw, B. Jaleta, M. Yirga, C.
Chapter: 16 (Page no: 314) Impacts of improved bean varieties on poverty and food security in Uganda and Rwanda. Author(s): Larochelle, C. Alwang, J. Norton, G. W. Katungi, E. Labarta, R. A.
Chapter: 17 (Page no: 338) The diffusion and impact of improved food crop varieties in sub-Saharan Africa. Author(s): Fuglie, K. Marder, J.
Chapter: 18 (Page no: 370) Varietal generation and output. Author(s): Walker, T. S. Alene, A. Ndjuenga, J. Labarta, R. Yigezu, Y. Diagne, A. Andrade, R. Andriatsitohaina, R. M. Groote, H. de Mausch, K. Yirga, C. Simtowe, F. Katungi, E. Jogo, W. Jaleta, M. Pandey, S. Charyulu, D. K.
Chapter: 19 (Page no: 388) Varietal adoption, outcomes and impact. Author(s): Walker, T. S. Alwang, J. Alene, A. Ndjuenga, J. Labarta, R. Yigezu, Y. Diagne, A. Andrade, R. Andriatsitohaina, R. M. Groote, H. de Mausch, K. Yirga, C. Simtowe, F. Katungi, E. Jogo, W. Jaleta, M. Pandey, S. Charyulu, D. K.
Chapter: 20 (Page no: 406) Validating adoption estimates generated by expert opinion and assessing the reliability of adoption estimates with different methods. Author(s): Walker, T. S.
Chapter: 21 (Page no: 420) Implications for monitoring progress and assessing impacts. Author(s): Alwang, J.

Chapter details

  • Author Affiliation
  • Department of Agricultural and Applied Economics, Virginia Tech, 251-I Hutcheson Hall, Blacksburg, Virginia, USA.
  • Year of Publication
  • 2015
  • ISBN
  • 9781780644011
  • Record Number
  • 20153367538