Person:
Larson, Donald F.
Author Name Variants
Fields of Specialization
Rural Development Policy; Natural Resource Policy; Agricultural Productivity and Growth; Climate Change Policy and Markets; Commodity Markets and Risk
Degrees
External Links
Departments
Development Research Group, World Bank
Externally Hosted Work
Contact Information
Last updated
January 31, 2023
Biography
Donald F. Larson is a Senior Economist with the World Bank’s Development Research Group. He holds a B.A in economics from the College of William and Mary, an M.A. in economics from Virginia Tech, and a Ph.D. in Agricultural and Resource Economics from the University of Maryland.
With colleagues, he has authored or edited five books, including An African Green Revolution: Finding Ways to Boost Productivity on Small Farms, a forthcoming volume from Springer, and The Clean Development Mechanism: An Early History of Unanticipated Outcomes, a forthcoming volume from World Scientific. He has published numerous book chapters and journal articles, with an emphasis on agricultural productivity and growth; food and rural development policies; natural resource policies; the institutions and markets related to climate change; and the performance of commodity futures and risk markets.
During his time with the World Bank, Don has participated in policy discussion in Africa, Eastern Europe, Central Asia, East Asia, Latin America, and the Caribbean. He was a member of the team that launched the World Bank’s Prototype Carbon Fund.
Publication Search Results
1 - 5 of 5
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Publication
How Endowments, Accumulations, and Choice Determine the Geography of Agricultural Productivity in Ecuador
(Oxford University Press on behalf of the World Bank, 2006-09-01)Spatial disparity in incomes and productivity is apparent across and within countries. Most studies of the determinants of such differences focus on cross-country comparisons or location choice among firms. Less studied are the large differences in agricultural productivity within countries related to concentrations of rural poverty. For policy, understanding the determinants of this geography of agricultural productivity is important, because strategies to reduce poverty often feature components designed to boost regional agricultural incomes. Census and endowment data for Ecuador are used to estimate a model of endogenous technology choice to explain large regional differences in agricultural output and factor productivity. A composite-error estimation technique is used to separate systemic determinants from idiosyncratic differences. Simulations are employed to explore policy avenues. The findings suggest a differentiation between the types of policies that promote growth in agriculture generally and those that are more likely to assist the rural poor. -
Publication
A Conceptual Model of Incomplete Markets and the Consequences for Technology Adoption Policies in Ethiopia
(World Bank, Washington, DC, 2013-10)In Africa, farmers have been reluctant to take up new varieties of staple crops developed to boost smallholder yields and rural incomes. Low fertilizer use is often mentioned as a proximate cause, but some believe the problem originates with incomplete input markets. As a remedy, African governments have introduced technology adoption programs with fertilizer subsidies as a core component. Still, the links between market performance and choices about using fertilizer are poorly articulated in empirical studies and policy discussions, making it difficult to judge whether the programs are expected to generate lasting benefits or to simply offset high fertilizer prices. This paper develops a conceptual model to show how choices made by agents supplying input services combine with household livelihood settings to generate heterogeneous decisions about fertilizer use. An applied model is estimated with data from a panel survey in rural Ethiopia. The results suggest that adverse market conditions limit the adoption of fertilizer-based technologies, especially among resource-poor households. Farmers appear to respond to market signals in the aggregate and this provides a pathway for subsidies to stimulate demand. However, the research suggests that lowering transaction costs, through investments in infrastructure and market institutions, can generate deeper effects by expanding the technologies available to farmers across all pricing outcomes. -
Publication
Should African Rural Development Strategies Depend on Smallholder Farms? An Exploration of the Inverse Productivity Hypothesis
(World Bank, Washington, DC, 2012-09)In Africa, most development strategies include efforts to improve the productivity of staple crops grown on smallholder farms. An underlying premise is that small farms are productive in the African context and that smallholders do not forgo economies of scale -- a premise supported by the often observed phenomenon that staple cereal yields decline as the scale of production increases. This paper explores a research design conundrum that encourages researchers who study the relationship between productivity and scale to use surveys with a narrow geographic reach, when policy would be better served with studies based on wide and heterogeneous settings. Using a model of endogenous technology choice, the authors explore the relationship between maize yields and scale using alternative data. Since rich descriptions of the decision environments that farmers face are needed to identify the applied technologies that generate the data, improvements in the location specificity of the data should reduce the likelihood of identification errors and biased estimates. However, the analysis finds that the inverse productivity hypothesis holds up well across a broad platform of data, despite obvious shortcomings with some components. It also finds surprising consistency in the estimated scale elasticities. -
Publication
Uzbekistan : Strengthening the Horticulture Value Chain
(World Bank, Washington, DC, 2015-01)Why produce a policy note on horticulture in Uzbekistan? There are several answers to this existential question, although they are not necessarily obvious ones. Agriculture, taken as a whole, constitutes a small and declining share of Uzbekistan s national income, and horticulture is a small share of agricultural income. Even so, it is an important source of income for the 4.7 million households that operate dehkan farms in rural and disproportionally poor communities. Horticultural products are grown on an additional 21 thousand larger private farms as well. Evidence in this note suggests that growing fruit and vegetables is among the most profitable activities on both dehkan and private farms and, over the last ten years, the incomes those activities generate comprised a growing share of national GDP. Horticultural export earnings have also surged in recent years, growing from USD 373 million in 2006 to USD 1.16 billion in 2010. Uzbekistan has special agro-ecological conditions that set it apart from most countries and provides the basis for its horticulture subsector. Like agriculture as a whole, the subsector benefits greatly from policies that support basic research in agronomy and post-harvest technologies, from policies that support private investment and efficient markets, and from policies that promote the good stewardship of natural resources. The policy note is centered on the horticultural subsector. However, because an effort is made to draw comparisons between the policy environment that prevails for dehkan farmers and private farmers growing horticultural crops and that which is relevant for private farmers growing wheat and cotton, the note touches on many sector-wide issues. Still, it is important to emphasize that this policy note should not be viewed as a general review of agricultural policies. Finding ways to adapt policy lessons from horticulture to improve agricultural productivity as a whole is a more ambitious task and one that requires broader analysis and discussion. -
Publication
Heterogeneous Technology and Panel Data : The Case of the Agricultural Production Function
(World Bank, Washington, DC, 2008-02)The paper presents empirical analysis of a panel of countries to estimate an agricultural production function using a measure of capital in agriculture absent from most studies. The authors employ a heterogeneous technology framework where implemented technology is chosen jointly with inputs to interpret information obtained in the empirical analysis of panel data. The paper discusses the scope for replacing country and time effects by observed variables and the limitations of instrumental variables. The empirical results differ from those reported in the literature for cross-country studies, largely in augmenting the role of capital, in combination with productivity gains, as a driver of agricultural growth. The results indicate that total factor productivity increased at an average rate of 3.2 percent, accounting for 59 percent of overall growth. Most of the remaining gains stem from large inflows of fixed capital into agriculture. The results also suggest possible constraints to fertilizer use.