Publication: Is There a Farm-Size Productivity Relationship in African Agriculture? Evidence from Rwanda
Loading...
Published
2014-02
ISSN
Date
2014-03-18
Author(s)
Editor(s)
Abstract
Whether the negative relationship between farm size and productivity that is confirmed in a large global literature holds in Africa is of considerable policy relevance. This paper revisits this issue and examines potential causes of the inverse productivity relationship in Rwanda, where policy makers consider land fragmentation and small farm sizes to be key bottlenecks for the growth of the agricultural sector. Nationwide plot-level data from Rwanda point toward a constant returns to scale crop production function and a strong negative relationship between farm size and output per hectare as well as intensity of labor use that is robust across specifications. The inverse relationship continues to hold if profits with family labor valued at shadow wages are used, but disappears if family labor is rather valued at village-level market wage rates. These findings imply that, in Rwanda, labor market imperfections, rather than other unobserved factors, seem to be a key reason for the inverse farm-size productivity relationship.
Link to Data Set
Citation
“Ali, Daniel Ayalew; Deininger, Klaus. 2014. Is There a Farm-Size Productivity Relationship in African Agriculture? Evidence from Rwanda. Policy Research Working Paper;No. 6770. © http://hdl.handle.net/10986/17304 License: CC BY 3.0 IGO.”
Digital Object Identifier
Associated URLs
Associated content
Other publications in this report series
Publication Climate and Social Sustainability in Fragility, Conflict, and Violence Contexts(Washington, DC: World Bank, 2026-01-07)Climate change is widely recognized as a driver of violent conflict, but its broader social effects remain less understood. Ignoring these dimensions risks a vicious cycle where climate policies might undermine socially just adaptation. Evidence is still limited on how climate shocks influence political participation, trust, or migration. This paper helps fill that gap by examining links between climate change, conflict, and social sustainability, with a focus on inclusion, resilience, cohesion, and legitimacy. Using secondary data from 2019–24, the study applies simple correlation-based methods to test three hypotheses on the nature, severity, and composition of these associations. The analysis combines multiple climate impact measures, new conflict classifications, recent social sustainability frameworks, and controls for population and geography. The results reveal strong correlations—not causation—between climate events and contexts of fragility, conflict, and violence. Climate impacts are most pronounced in both national and subnational conflict settings. The study also finds robust links between fragility, conflict, and violence and low levels of social sustainability, reflecting its role as both a driver and consequence of conflict. Some dimensions—such as violent events and insecurity—appear weaker in areas most affected by climate shocks. Two of the hypotheses are supported, and one remains inconclusive.Publication The Macroeconomic Implications of Climate Change Impacts and Adaptation Options(Washington, DC: World Bank, 2025-05-29)Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.Publication Institutional Capacity for Policy Implementation: An Analytical Framework(Washington, DC: World Bank, 2026-01-07)State capacity is an important prerequisite for policy implementation, yet at the country level it is difficult to measure, assess, and reform. This paper proposes a focus on institutional capacity: the ability of public institutions to implement the specific policy mandates for which they are responsible. Based on a review of existing literature, the paper defines the different dimensions that compose institutional capacity and groups them into two cross-cutting categories: organizational dimensions (personnel, financial resources, information systems, and management practices) and governance dimensions (transparency, independence, and accountability). The paper proposes measures for organizational and governance dimensions using existing data, shows intra-institutional variation of these measures within countries, and discusses how new data could be collected for better measurement of these concepts. Finally, the paper illustrates how the framework can be used to diagnose the sources of common problems related to weak policy implementation.Publication South Africa’s Fragmented Cities: The Unequal Burden of Labor Market Frictions(Washington, DC: World Bank, 2026-01-08)Using high-resolution administrative, census, and satellite data, this paper shows that South African cities are characterized by spatial mismatches between where people live and where jobs are located, relative to 20 global peers. Areas within 5 kilometers of commercial centers have 9,300 fewer residents per square kilometer than expected, which is 60 percent below the global median. Poor, dense neighborhoods are most affected. In Johannesburg, a 10-percentile increase in distance from the nearest business hub corresponds to a 3.7-percentile drop in asset wealth (a proxy of household wellbeing) and 4.9-percentile drop in employment. In Cape Town, the declines are 4.0 and 3.7 percentiles, respectively. Employment is 87 percent lower in the poorest decile than the richest in Johannesburg and 61 percent lower in Cape Town. These findings suggest that South Africa’s spatial organization of people and economic activity constrains agglomeration and reinforces inequality. This methodology provides a scalable and standardized data-driven framework to analyze spatial accessibility and agglomeration frictions in complex, data-constrained urban systems.Publication Investment in Emerging and Developing Economies(Washington, DC: World Bank, 2026-01-07)The world faces a pressing challenge to meet key development objectives amid slowing growth and rising macroeconomic and geopolitical risks. With the number of job seekers rising rapidly, infrastructure shortfalls continuing to be large, and climate costs mounting, the case for a significant investment push has never been stronger. Yet the capacity to respond in many emerging markets and developing economies has eroded. Since the global financial crisis, investment growth has slowed to about half its pace in the 2000s, with both public and private investment weakening. Foreign direct investment inflows—a critical source of capital, technology, and managerial know-how—have also fallen sharply and become increasingly concentrated, leaving low-income countries with only a marginal share. The risks of further retrenchment are significant, as trade tensions, policy uncertainty, and elevated debt levels continue to weigh on investment. Reigniting momentum will require ambitious domestic reforms to strengthen institutions, rebuild macro-fiscal stability, and deepen trade and investment integration—the foundations of a supportive business climate. At the same time, international cooperation is indispensable. A renewed commitment to a predictable system of cross-border trade and investment flows, combined with scaled-up financial support and sustained technical assistance, is essential to help emerging markets and developing economies—especially low-income countries and economies in fragile and conflict situations—bridge financing gaps and implement the domestic reforms needed to restore investment as an engine of growth, jobs, and development.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication Do Overlapping Property Rights Reduce Agricultural Investment? Evidence from Uganda(World Bank, Washington, DC, 2007-08)The need for land-related investment to ensure sustainable land management and increase productivity of land use is widely recognized. However, there is little rigorous evidence on the effects of property rights for increasing agricultural productivity and contributing toward poverty reduction in Africa. Whether and by how much overlapping property rights reduce investment incentives, and the scope for policies to counter such disincentives, are thus important policy issues. Using information on parcels under ownership and usufruct by the same household from a nationally representative survey in Uganda, the authors find significant disincentives associated with overlapping property rights on short and long-term investments. The paper combines this result with information on crop productivity to obtain a rough estimate of the magnitudes involved. The authors make suggestions on ways to eliminate such inefficiencies.Publication Costs and Benefits of Land Fragmentation(World Bank, Washington, DC, 2015-06)This paper disentangles different aspects of land fragmentation and its impact on the efficiency of resource use. The paper uses information on the incidence of crop shocks to assess whether fragmentation provides benefits in reducing risk and parcel coordinates and terrain-adjusted travel times between parcels to more precisely account for the associated costs in 2010/11 data from Rwanda. While fragmentation increases the time required to move between a household’s parcels, this does not appear to affect overall technical efficiency on the farm. Fragmentation rather reduces the incidence of crop shocks and increases yields and productive efficiency. In Rwanda’s setting, interventions to reduce fragmentation may, therefore, be ineffective or counterproductive.Publication Are Mega-Farms the Future of Global Agriculture? Exploring the Farm Size-Productivity Relationship for Large Commercial Farms in Ukraine(World Bank, Washington, D.C., 2013-07)With farms cultivating tens or hundreds of thousands of hectares, Ukraine is often used to demonstrate the existence of economies of scale in modern grain production. Panel data analysis for all the country's farms with more than 200 hectares in 2001-2011 suggests that higher yields and profits are due to unobserved factors at rayon (district) and farm level rather than economies of scale. Productivity growth was driven not by farm expansion but by exit of unproductive and entry of more efficient farms. Higher initial shares of area under farms with more than 3,000 or 5,000 hectares at the rayon level significantly reduce subsequent exit, suggesting that land concentration reduces productivity growth. The paper draws implications for global evolution of farm structures.Publication Tajikistan - Autonomous Adaptation to Climate Change : Economic Opportunities and Institutional Constraints for Farming Households(Washington, DC, 2014-05)Climate change presents significant threats to sustainable poverty reduction in Tajikistan. The primary impacts on rural livelihoods are expected to stem from reduced water quantity and quality (affecting agriculture), and increased frequency and severity of disasters. Options for farming households to autonomously adapt (and thereby move from climate vulnerability to resilience) include adoption of on-farm and off-farm measures. Farmland restructuring and the promotion of innovative rural production and land management measures have the potential to incentivize productivity and sustainable practices and reduce vulnerability, but achieving these objectives will rest on the behavioral responses of beneficiaries. In this context, assessing existing practices, as well as understanding institutional constraints to adaptation is crucial to improving economic opportunities for Tajik households and reducing vulnerability through well-designed interventions. This note examines the role of institutional factors (land tenure, legal security, and gender agency) in autonomous adaptation and improved resilience of rural communities through strategies for coping with climate-related shocks, sustainable land management practices, and income diversification. The note analyzes the extent to which differences in land rights are associated with differences in adaptation strategies and outcomes. The study focuses on two of Tajikistan s four main administrative divisions: Khatlon and Sughd districts. This note relies on a survey of farming households and a qualitative study that were undertaken specifically for this analysis. The note is structured as follows: section one give introduction. Section two describes land tenure arrangements, gender-related constraints, and sustainable land management practices in Tajikistan. Section three discusses the shocks experienced by households and the coping strategies used (including on-farm and off-farm strategies). Section four analyzes the determinants of knowledge and adoption of sustainable land management practices and on-farm investment. Section five concludes with policy recommendations to enable effective climate change adaptation by farming households.Publication Are Women Less Productive Farmers?(World Bank, Washington, DC, 2015-04)African governments and international development groups see boosting productivity on smallholder farms as key to reducing rural poverty and safeguarding the food security of farming and non-farming households. Prompting smallholder farmers to use more fertilizer has been a key tactic. Closing the productivity gap between male and female farmers has been another avenue toward achieving the same goal. The results in this paper suggest the two are related. Fertilizer use and maize yields among smallholder farmers in Uganda are increased by improved access to markets and extension services, and reduced by ex ante risk-mitigating production decisions. Standard ordinary least squares regression results indicate that gender matters as well; however, the measured productivity gap between male and female farmers disappears when gender is included in a list of determinants meant to capture the indirect effects of market and extension access.
Users also downloaded
Showing related downloaded files
Publication Women, Business and the Law 2024(Washington, DC: World Bank, 2024-03-04)Women, Business and the Law 2024 is the 10th in a series of annual studies measuring the enabling conditions that affect women’s economic opportunity in 190 economies. To present a more complete picture of the global environment that enables women’s socioeconomic participation, this year Women, Business and the Law introduces two new indicators—Safety and Childcare—and presents findings on the implementation gap between laws (de jure) and how they function in practice (de facto). This study presents three indexes: (1) legal frameworks, (2) supportive frameworks (policies, institutions, services, data, budget, and access to justice), and (3) expert opinions on women’s rights in practice in the areas measured. The study’s 10 indicators—Safety, Mobility, Workplace, Pay, Marriage, Parenthood, Childcare, Entrepreneurship, Assets, and Pension—are structured around the different stages of a woman’s working life. Findings from this new research can inform policy discussions to ensure women’s full and equal participation in the economy. The indicators build evidence of the critical relationship between legal gender equality and women’s employment and entrepreneurship. Data in Women, Business and the Law 2024 are current as of October 1, 2023.Publication Reboot Development: The Economics of a Livable Planet(Washington, DC: World Bank, 2025-09-01)“Reboot Development: The Economics of a Livable Planet” explores how the foundational natural endowments of land, air, and water—long taken for granted—are under growing threat, putting at risk the very progress they helped create. For generations, natural resources have powered development, supporting health, food, energy, and economic opportunity. Today, strains on these resources are intensifying. This report argues that failing to maintain a livable planet is not merely a distant environmental concern, but a present economic threat. Drawing on new data, the report shows that over 90 percent of the world is exposed to poor air quality, degraded land, or water stress. Loss of forests cuts rainfall, dries soils, and worsens droughts, costing billions of dollars. The nitrogen paradox emerges—fertilizers boost yields but overuse in some regions harms crops and ecosystems. Meanwhile, air and water pollution silently damage health, productivity, and cognition, sapping human potential. The report warns that these hidden costs are too large to ignore. Yet the message is not one of constraint but of possibility. Nature, when wisely stewarded, can drive growth, create jobs, and build resilience. The report shows that more efficient resource use—like better nitrogen management and forest restoration—yields benefits that far exceed the costs. It also urges a shift to cleaner sectors and producing “better things,” noting that these provide new sources of growth, creating more jobs per dollar invested. The findings are clear: Investing in nature is not only good for the planet, it is smart development.Publication Business Ready 2024(Washington, DC: World Bank, 2024-10-03)Business Ready (B-READY) is a new World Bank Group corporate flagship report that evaluates the business and investment climate worldwide. It replaces and improves upon the Doing Business project. B-READY provides a comprehensive data set and description of the factors that strengthen the private sector, not only by advancing the interests of individual firms but also by elevating the interests of workers, consumers, potential new enterprises, and the natural environment. This 2024 report introduces a new analytical framework that benchmarks economies based on three pillars: Regulatory Framework, Public Services, and Operational Efficiency. The analysis centers on 10 topics essential for private sector development that correspond to various stages of the life cycle of a firm. The report also offers insights into three cross-cutting themes that are relevant for modern economies: digital adoption, environmental sustainability, and gender. B-READY draws on a robust data collection process that includes specially tailored expert questionnaires and firm-level surveys. The 2024 report, which covers 50 economies, serves as the first in a series that will expand in geographical coverage and refine its methodology over time, supporting reform advocacy, policy guidance, and further analysis and research.Publication The Global Findex Database 2025: Connectivity and Financial Inclusion in the Digital Economy(Washington, DC: World Bank, 2025-07-16)The Global Findex 2025 reveals how mobile technology is equipping more adults around the world to own and use financial accounts to save formally, access credit, make and receive digital payments, and pursue opportunities. Including the inaugural Global Findex Digital Connectivity Tracker, this fifth edition of Global Findex presents new insights on the interactions among mobile phone ownership, internet use, and financial inclusion. The Global Findex is the world’s most comprehensive database on digital and financial inclusion. It is also the only global source of comparable demand-side data, allowing cross-country analysis of how adults access and use mobile phones, the internet, and financial accounts to reach digital information and resources, save, borrow, make payments, and manage their financial health. Data for the Global Findex 2025 were collected from nationally representative surveys of about 145,000 adults in 141 economies. The latest edition follows the 2011, 2014, 2017, and 2021 editions and includes new series measuring mobile phone ownership and internet use, digital safety, and frequency of transactions using financial services. The Global Findex 2025 is an indispensable resource for policy makers in the fields of digital connectivity and financial inclusion, as well as for practitioners, researchers, and development professionals.Publication Global Economic Prospects, June 2025(Washington, DC: World Bank, 2025-06-10)The global economy is facing another substantial headwind, emanating largely from an increase in trade tensions and heightened global policy uncertainty. For emerging market and developing economies (EMDEs), the ability to boost job creation and reduce extreme poverty has declined. Key downside risks include a further escalation of trade barriers and continued policy uncertainty. These challenges are exacerbated by subdued foreign direct investment into EMDEs. Global cooperation is needed to restore a more stable international trade environment and scale up support for vulnerable countries grappling with conflict, debt burdens, and climate change. Domestic policy action is also critical to contain inflation risks and strengthen fiscal resilience. To accelerate job creation and long-term growth, structural reforms must focus on raising institutional quality, attracting private investment, and strengthening human capital and labor markets. Countries in fragile and conflict situations face daunting development challenges that will require tailored domestic policy reforms and well-coordinated multilateral support.