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The Impact of Irrigation on Nutrition, Health, and Gender
Agriculture in Africa south of the Sahara (SSA) is still largely rainfed. SSA also exhibits the lowest crop yields for major staples in the world, largely due to low use of irrigation and fertilizer. Rainfed agriculture poses growing production risks with increased climate variability and change. At the same time, smallholder irrigation in the region developed rapidly over the past decade, albeit starting from very low levels. In addition to largely demand-driven irrigation development by smallholders, there is a significant push by donors for large-scale irrigation development, as well as some push for smallholder irrigation. There has also been a long-standing debate about whether irrigati...
The Child Health Implications of Privatizing Africas Urban Water Supply
Identifying policies which can improve water sector management is critically important given the global burden of water-related disease. Each year, 1 in 10 child deathsroughly 800,000 in totalis the direct result of diarrhea. Can private-sector participation (PSP) in the urban piped water sector improve child health? The author uses child-level data from 39 African countries during 19862010 to show that introducing PSP decreases diarrhea among urban dwelling children under five years of age by 5.6 percentage points, or 35 percent of its mean prevalence. PSP also leads to greater reliance on piped water. To attribute causality, the author exploits time variation in the private water market share controlled by African countries former colonizers. A placebo analysis reveals that PSP does not affect symptoms of respiratory illness in the same children, nor does it affect a rural control group unaffected by PSP.
The Impact of Alternative Input Subsidy Exit Strategies on Malawis Maize Commodity Market
This study has been conducted in order to generate evidence of the visibility of exit from farm input subsidies in an African context. The study simulates the impact of alternative exit strategies from Malawis farm input subsidy program on maize markets. The simulation is conducted using a multiequation partial equilibrium model of the national maize market, which is sequentially linked via a price-linkage equation to local rural maize markets. The model accounts for market imperfections prevailing in the country that arise from government price interventions. Findings show that some alternative exit strategies have negative and sustained impacts on maize yields, production, and acreage al...
Understanding the Role of Research in the Evolution of Fertilizer Policies in Malawi
This study examines the role of research in agricultural policy making in Malawi at a time when the Africa Union and the New Partnership for Africas Development have been seeking to promote greater evidenced-based decision making in agriculture. Drawing on both theory and actual past experiences documented in the literature, results are intended to improve our understanding of the extent to which research has played any role in influencing policy change in Malawi. This is done in the context of the evolution of the countrys fertilizer subsidy policies. Results point to some general lessons. First, strengthening the Ministry of Agricultures capacity for policy analysis and becoming more...
The Policy Landscape of Agricultural Water Management in Pakistan
Irrigation is central to Pakistans agriculture; and managing the countrys canal, ground, and surface water resources in a more efficient, equitable, and sustainable way will be crucial to meeting agricultural production challenges, including increasing agricultural productivity and adapting to climate change. The water component of the International Food Policy Research Institutes Pakistan Strategy Support Program (PSSP) is working to address these topics through high-quality research and policy engagement. As one of the first activities of this program, the PSSP undertook this assessment of the policy landscape for agricultural water management in Pakistan, to better understand how to...
Typology of Farm Households and Irrigation Systems
Irrigation is considered an important factor for agriculture and food security. Knowledge gaps, however, still exist with regard to how farmers in Africa south of Sahara, including Nigeria, are using irrigation. Given the diverse agroecological and socioeconomic environment in countries like Nigeria, understanding the diverse patterns of irrigation use and their associations with household characteristics is important in designing how irrigation can contribute to the agricultural transformation. This report summarizes the typology of farm households and irrigators in Nigeria. We apply a cluster analysis method to the Living Standard Measurement Survey (LSMS)Integrated Survey on Agriculture...
Targeting Technology to Reduce Poverty and Conserve Resources
Demand heterogeneity often makes it profitable for firms to price and promote goods and services differently in different market segments. When private consumption brings public benefits, this same heterogeneity can be used to target public subsidies. We explore the design of publicprivate targeting and segmentation strategies in the case of a resource-conserving agricultural technology in India. To understand farmers heterogeneous demand for laser land leveling (LLL), we conducted an experimental auction for LLL services with an integrated randomized controlled trial to estimate the private benefits of the technology. We use graphical and econometric approaches to characterize farmer de...
The Logic of Adaptive Sequential Experimentation in Policy Design
Inspired by the wide adoption of rigorous randomized controlled trials (RCTs) in medical research, economists and other social scientists have increasingly used RCTs in their research. As researchers pick up projects amenable to the RCT methodology, they likely leave out important questions to which RCTs cannot be directly applied. As a result, RCTs have been criticized for the proclivity of addressing trivial questions. As a matter of fact, in medical research RCTs are an integral part of adaptive sequential experiment designa few steps must be taken to screen out drugs that have toxins and strong side effects before running any RCTs on humans. In this paper, we argue that economists can learn a great deal from the design principles implemented in medical research. We develop a theoretical model to show the logic of adaptive sequential experiment design in the presence of uncertainty over negative effects and discuss how to choose samples in a population to minimize the experiment cost. We also point out the applications of our proposed framework in the economic domain, such as economic reforms and new product design.
An Ex Ante Analysis of the Impact and Cost-Effectiveness of Biofortified High-Provitamin A and High-Iron Banana in Uganda
Uganda has made notable progress in reducing micronutrient deficiencies in recent years, but the prevalence of vitamin A deficiency (VAD) and anemia among children under 5 remain unacceptably high. According to World Health Organization criteria, VAD remains a public health problem in Uganda, and anemia is a severe problem. In this paper we explore the potential contribution to reducing both of these deficiencies using a genetically modified, highprovitamin A and high-iron banana (HPVAHIB) that is currently being developed. We present an ex ante analysis of the costs and nutritional benefits of HPVAHIB. Using the Ugandan National Household Survey of 2005/06, we analyzed the production and ...
Population Density, Migration, and the Returns to Human Capital and Land
Rapid population growth in many developing countries has raised concerns regarding food security and household welfare. To understand the consequences of population growth on in the general equilibrium setting, we examine the dynamics of population density and its impacts on household outcomes using panel data from Indonesia. More specifically we explicitly highlight the importance of migration to urban sectors in the analysis. Empirical results show that human capital in the household determines the effect of increased population density on per capita household consumption expenditure. The effect of population density is positive if the average educational attainment is high (above junior high school), while it is negative otherwise. On the other hand, farmers with larger holdings maintain their advantage in farming regardless of population density. The paper concludes with some potential lessons for African countries from Indonesias more successful rural development experiences.
