Whereas there is plenty of work looking at macroeconomic effect of public spending on growth and poverty in Africa as well as studies of the impact of spending or investment in one economic sector on outcomes in that sector or on broader welfare measures, this book fills a much needed gap in the research looking how the composition of public spending affects key development outcomes in the region. The book brings together recent analysis on the trends in, and returns to, public spending for agricultural growth and rural development in Africa. Case studies of selected African countries provide insights on the contributions of different types of public expenditures for poverty, growth and welfare outcomes, as well as insights into the constraints in gaining development mileage from investments in the agricultural sector.

Agricultural mechanization in Africa south of the Sahara — especially for small farms and businesses — requires a new paradigm to meet the needs of the continent’s evolving farming systems. Can Asia, with its recent success in adopting mechanization, offer a model for Africa? An Evolving Paradigm of Agricultural Mechanization Development analyzes the experiences of eight Asian and five African countries. The authors explore crucial government roles in boosting and supporting mechanization, from import policies to promotion policies to public good policies. Potential approaches presented to facilitating mechanization in Africa include prioritizing market-led hiring services, eliminating distortions, and developing appropriate technologies for the African context. The role of agricultural mechanization within overall agricultural and rural transformation strategies in Africa is also discussed. The book’s recommendations and insights should be useful to national policymakers and the development community, who can adapt this knowledge to local contexts and use it as a foundation for further research.

Whereas there is plenty of work looking at macroeconomic effect of public spending on growth and poverty in Africa as well as studies of the impact of spending or investment in one economic sector on outcomes in that sector or on broader welfare measures, this book fills a much needed gap in the research looking how the composition of public spending affects key development outcomes in the region. The book brings together recent analysis on the trends in, and returns to, public spending for agricultural growth and rural development in Africa. Case studies of selected African countries provide insights on the contributions of different types of public expenditures for poverty, growth and welfare outcomes, as well as insights into the constraints in gaining development mileage from investments in the agricultural sector.

Countries vary systematically with respect to the incentives of politicians to provide broad public goods, and to reduce poverty. Even in developing countries that are democracies, politicians often have incentives to divert resources to political rents, and to private transfers that benefit a few citizens at the expense of many. These distortions can be traced to imperfections in political markets, that are greater in some countries than in others. The authors review the theory, and evidence on the impact of incomplete information of voters, the lack of credibility of political promises, and social polarization on political incentives. They argue that the effects of these imperfections are large, but that their implications are insufficiently integrated into the design of policy reforms aimed at improving the provision of public goods, and reducing poverty.

During the 1990s, SSA countries initiated agricultural policy reforms to increase producer incentives and increase growth. Yet, agricultural growth rates after the reforms have been uneven. This has been attributed to lack of supporting infrastructure or the inability to respond to incentives by the smallholders. Based on ten studies, this volume provides a different framework to interpret the outcomes. First, it attributes the success of the reforms to the degree of consensus around the reform programs, which in turn, creates the institutions that can accommodate unexpected shocks. It differentiates between short run growth accelerations and sustained growth episodes. Second, it analyzes the impact of international prices which increased during the early 1990 and collapsed around 2000. Finally, it links the support institutions that evolved after the reforms back to the political economy of the stakeholders and their interests. Aksoy and Anil develop a political economy framework by bringing together the issues of consensus over the distribution of rents, role of unexpected changes, and the capabilities of institutions in handling these changes. Onal tests the of supply responses while Onal and Aksoy analyze international commodity prices and their transmission to the producers. Baffes analyzes impact of the adoption of cotton biotechnology in India and China, and the failure of SSA to also adopt. Baffes and Onal undertake a comparative study of coffee sectors in Uganda, and Vietnam which faced similar shocks. Five case studies cover cashew in Mozambique (Aksoy and Yagci), coffee and tea in Kenya (Mitchell), cashew in Tanzania (Mitchell and Baregu), tobacco in Tanzania (Mitchell and Baregu), and cotton in Zambia (Yagci and Aksoy). Results show that Agricultural policy reforms generated an immediate positive supply response. Real producer prices increased along with output. In unsuccessful cases where the short run supply response petered out, political and social consensus on the reforms was weak, and the ability to redistribute income after a negative shock was not built into the new arrangements. These products had been a major instrument for rent distribution before the reforms. The agencies could not be reformed to give greater non price support. In successful cases, there was greater consensus on the reforms program. The product was not a major rent distribution instrument and the producers were allied with the governments. Lower conflict also led to greater non price support. There was enough political and economic space for the parties to find solutions in case of shocks.

Using data on 34 countries in Africa south of the Sahara (SSA) from 1980 to 2012, this paper assesses the returns to public spending in the agricultural sector, considering expenditures on agriculture as a whole versus expenditures on agricultural research. First, an aggregate production function is estimated using a fixed-effects, instrumental variables estimator to address potential endogeneity of agricultural expenditure and to obtain elasticities of land productivity with respect to total agricultural expenditure and agricultural research expenditure. Different model specifications are used to test the sensitivity of the results to different assumptions. The estimated elasticities are then used to estimate the rate of return to expenditure in different countries and groups of countries. The elasticity of land productivity with respect to total agricultural expenditure per hectare is estimated at 0.04, and elasticity with respect to agricultural research expenditure per hectare is estimated to be higher at 0.09. The aggregate returns to total agricultural expenditure and agricultural research expenditure in SSA are estimated at 11 percent and 93 percent, respectively. Comparative analysis of the estimates with those of previous studies, as well as across different countries and different groups of countries, is undertaken. Then implications are discussed for maintaining the high returns to agricultural research expenditure and for further studies on the low return to total agricultural expenditure, including more disaggregated analysis of expenditure on other functions besides research to better inform prioritization of agricultural expenditure.