In the wake of the global food crisis of 2007–08 and additional price spikes since then, greater attention has been given to the welfare impact of food price increases in developing countries. The standard approach in this type of analysis, proposed by Deaton (1989), is based on income and expenditure data from household surveys. Given the widespread use of this method, it is important to revisit the assumptions behind it and examine the sensitivity of results to those assumptions. In this paper, we explore the distributional impact of higher maize, rice, and food prices in Ghana and analyze the robustness of those results to changes in several key assumptions. The results suggest that higher maize and rice prices have a relatively modest short-term impact on national poverty but significant effects on specific groups of households. As expected, urban households lose from higher grain prices, but a surprisingly large share of rural households also lose because they are net buyers. The results also suggest that the current policy of protecting domestic rice producers with an import tax does not contribute to national poverty reduction, in spite of the fact that rice growers tend to be poor. If we relax the assumption that households do not respond to the higher prices, the effects are more positive or less negative, but only modestly so. On the other hand, if we relax the assumption that producer and consumer prices rise by the same proportion, and instead assume a constant marketing margin, the results change substantially. Because producer prices now rise by a larger proportion than consumer prices, the impact of higher prices is much more positive. These findings highlight the need for more research on the effect of price spikes on marketing margins.

This book provides fresh insights into concepts, methods and new research findings on the causes of excessive food price volatility. It also discusses the implications for food security and policy responses to mitigate excessive volatility. The approaches applied by the contributors range from on-the-ground surveys, to panel econometrics and innovative high-frequency time series analysis as well as computational economics methods. It offers policy analysts and decision-makers guidance on dealing with extreme volatility.

The agriculture system is under pressure to increase production every year as global population expands and more people move from a diet mostly made up of grains, to one with more meat, dairy and processed foods. This book uses a decade of primary research to examine how weather and climate, as measured by variations in the growing season using satellite remote sensing, has affected agricultural production, food prices and access to food in food-insecure regions of the world. The author reviews environmental, economics and multidisciplinary research to describe the connection between global environmental change, changing weather conditions and local staple food price variability. The context of the analysis is the humanitarian aid community, using the guidance of the USAID Famine Early Warning Systems Network and the United Nation’s World Food Program in their response to food security crises. These organizations have worked over the past three decades to provide baseline information on food production through satellite remote sensing data and agricultural yield models, as well as assessments of food access through a food price database. These datasets are used to describe the connection, and to demonstrate the importance of these metrics in overall outcomes in food-insecure communities.

Citing a paucity of empirical evidence on the poverty and distributional impacts of trade policy reform in Ghana as the main motivation for this volume, the editors (both of the Institute of Statistical, Social and Economic Research at the U. of Ghana) present eleven papers that combine theory and econometric analysis in an effort to assess linkages between globalization, trade, and poverty (including gendered aspects). Specific topics examined include manufacturing employment and wage effects of trade liberalization; the influence of education on trade liberalization impacts on household welfare; trade liberalization and manufacturing firm productivity; the impact of elimination of trade taxes on poverty and income distribution; food prices, tax reforms, and consumer welfare under trade liberalization; impacts on tariff revenues; and impacts on cash cropping, gender, and household welfare; Distributed in the US by Stylus. Annotation ©2012 Book News, Inc., Portland, OR (booknews.com).

The impressive growth in aquaculture is now commonly dubbed a “blue revolution.” In some Asian countries, fish availability has increased at a faster rate in recent decades than did cereal availability during the Green Revolution. As an example, Bangladesh is one country where aquaculture has increased almost eightfold since the early 1990s. This growth has important implications for food and nutrition securities. Yet, there is little research on the determinants and impacts of this growth to document the lessons, identify evolving issues, and guide policy discussions. This paper attempts to fill that gap. Using several rounds of nationally representative household survey data, the authors conducted microsimulations to generate disaggregated estimates. The results show that, between 2000 and 2010, about 12 percent of Bangladesh’s overall poverty reduction can be attributed to aquaculture growth. In other words, of the 18 million Bangladeshis who escaped poverty during this period, more than 2 million of them managed to do so because of the growth in aquaculture. However, the results vary widely across income groups, with households in the third income quintile (which is not the poorest) benefiting the most. The implications of the results, methodological issues, and areas of future research are also discussed.

In an effort to inform social policy in Mexico, this paper analyzes the effects of a major social program on school attendance and household income distribution, accounting for its partial and general equilibrium effects. Linking a microeconometric simulation model and a general equilibrium model in a bidirectional way, the paper explicitly takes spillover effects of the Oportunidades conditional cash transfer program into account. Our results suggest that partial equilibrium analysis alone may underestimate the distributional effects of the program. Extending the coverage of the program leads to a significant increase in school attendance, which reduces labor supply and increases the equilibrium wages of the children who remain at work. This general equilibrium effect indirectly reduces income inequality and poverty at the national level.

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 irrigation in SSA should be large scale or small scale to achieve its potential. However, given the potentially high rewards, but also high possibility of failure, the assessment of irrigation potential must go beyond large scale versus small scale to integrate concerns regarding environmental sustainability, resource use efficiency, nutrition and health impacts, and women’s empowerment. The hypothesis underlying this review paper is that how irrigation gets deployed in SSA will be decisive not only for environmental sustainability (such as deciding remaining forest cover in the region) and poverty reduction, but also for health, nutrition, and gender outcomes in the region. The focus of this paper is on the health, nutrition, and gender linkage. We find that to date, few studies have analyzed the impact of irrigation interventions on nutrition, health, and women’s empowerment, despite the large potential of irrigation to affect these important variables. Irrigation interventions may have differential effects on different members in the household and in the community, such as irrigators, non-irrigators, children, and women. Measuring and understanding such differences, followed by improving design and implementation to maximize gender, health, and nutrition outcomes, could transform irrigation programs from focusing solely on increased food production toward becoming an integral component of poverty-reduction strategies.

Asian countries have witnessed a sharp increase in real wage as a result of rapid economic growth and structural transformation in recent years. Using a country level panel data from 1980 to 2010, this paper examines the effects of real wage increase on Asian agriculture that traditionally used family labor intensively on small farms. The empirical evidence supports our hypothesis that an increase in real wages, along with absorptions of labor into nonagricultural sectors, has been inducing the substitution of labor by machines in agriculture. However, this process is less successful in the countries that are constrained by their small operational land sizes, resulting in lowered land productivity. We also demonstrated that dynamic changes in yield are an important determinant of food self-sufficiency ratio. The above findings imply that in the near future, Asian agriculture can face a challenge in maintaining domestic food production. Given the large size of consumer demands in the region and its increasing trend, the future path of Asian agriculture could be a significant constraint on the global food supply–demand balance.

Though there is increasing evidence of the availability and potential of new agricultural technologies in Africa south of the Sahara, effective demand for them is still low. A recent refocus on increasing farmers’ use of modern technologies such as improved seed and chemical fertilizer has led to a resurgence of input subsidies for these products in many developing countries. One popular mechanism currently in use is input vouchers. Targeted input vouchers are intended to simultaneously improve the targeting of subsidies and develop demand in private markets. While there is growing evidence of the impact of targeted subsidies on private input demand, as far as we are aware no empirical studies have examined the spillover effects of targeted subsidies for just one input on the use of other complementary inputs with which there is low substitutability. Consequently, this study begins to fill this gap by exploring the effect of increasing access to subsidized fertilizer on farmers’ use of improved seed in Nigeria. Using a control function approach within a limited dependent variable framework, we explore the effect of receiving subsidized fertilizer on a farmer’s likelihood of using improved seed. The study finds evidence that increased access to subsidized fertilizer increased the likelihood of farmers using improved seed in Kano, Nigeria. This indicates that farmers are re-optimizing their use of other inputs in response to increasing availability of one input. This complicates the ability to isolate the returns to any one input when evaluating programs targeted at just one input. Our results were robust to various model specifications and indicate that there is a clear link between farmers’ use of improved seed and fertilizer in Kano, which could be leveraged in the development of input subsidy programs across Africa south of the Sahara.

Since 2007, the government of Ghana has been providing subsidized agricultural machines to private enterprises established as Agricultural Mechanization Services Enterprise Centers (AMSEC) to scale up tractor-hire services to smallholder farmers. Although farmer’s demand for mechanization has increased in recent years, most of this demand concentrates on land preparation (plowing) service. Using the firm investment model and recent data, this paper quantitatively assesses whether AMSEC as a private enterprise is a viable business model attractive to private investors. Even though the intention of the government is to promote private sector-led mechanization, findings suggest that the AMSEC model is unlikely to be a profitable business model attractive to private investors even with the current level of subsidy. The low tractor utilization rate as a result of low operational scale is the most important constraint to the intertemporal profitability of tractor-hire services. Our findings further support the argument of Pingali, Bigot, and Binswanger (1987), who indicated that mechanization service centers supported through government’s heavy subsidy are not a policy option anywhere in the world, even in the current situation in Ghana. Although the tractor rental service market is a proper way of mechanizing agriculture in a smallholder-dominated agricultural economy such as Ghana, this paper concludes that the development of such a market depends crucially on a number of factors, including increased tractor use through migration across the two very different rainfall zones (north and south), increased tractor use through multiple tasks, and use of low-cost tractors. The government can play an important role in facilitating the development of a tractor service market; however, the successful development of such a market depends on the incentive and innovation of the private sector, including farmers who want to own tractors as part of their business portfolio, traders who know how to bring in affordable tractors and expand the market, and manufacturers in exporting countries who want to seek a long-term potential market opportunity in Ghana and in other west African countries.