Agriculture

This research area explores the national and international land and water laws that govern land tenure and property rights in sub-Saharan African countries, with the aim of understanding how large-scale land investments influence the tenure security, and therefore food security, of local farmers. The World Bank and others have identified a large agro-ecological region of African known as the Guinea Savannah as well-positioned for major agricultural development.

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In Lewis Carroll's Through the Looking Glass, Alice finds herself running as fast as she can but not moving anywhere. The Red Queen explains to her 'Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that.'

Such is the situation in global agriculture. Global demand for agricultural products continues to rise as population grows and people get richer. As they get richer, people have fewer babies but eat more. And they use a lot more energy, which is increasingly derived from agricultural products. Crop technologies have to move incredibly fast just to keep up. Remarkably, over the past 50 years they have, with yields (production per hectare of land) for most crops more than doubling since 1960, and real prices of food falling for most of the period. In many ways we have come to take continued yield growth for granted. But, as Lin and Huybers show elsewhere in this issue, there is increasing evidence that this growth has stalled in many regions.

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Presentation given by FSE fellow David Lobell at the Banff International Research Station (BIRS) "Frontiers in the Detection and Attribution of Climate Change" workshop May 28, 2012. The workshop focuses on developing and improving the statistical methodology of detection and attribution of climate change (D&A). Participants seek ways in which human influence on Earth's climate, and the attendant impacts of climate change on human systems, can be more precisely quantified in light of the latest developments in applied statistics, climate modelling, and Earth observations. 

Video link to Lobell's talk: Impacts of climate change on agriculture and opportunities for detection and attribution.

Banff International Research Station

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Professor, Earth System Science
Senior Fellow at the Freeman Spogli Institute for International Studies
Senior Fellow at the Stanford Woods Institute for the Environment
Senior Fellow at the Stanford Institute for Economic Policy Research (SIEPR)
Affiliate, Precourt Institute of Energy
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David Lobell is the Benjamin M. Page Professor at Stanford University in the Department of Earth System Science and the Gloria and Richard Kushel Director of the Center on Food Security and the Environment. He is also the William Wrigley Senior Fellow at the Stanford Woods Institute for the Environment, and a senior fellow at the Freeman Spogli Institute for International Studies (FSI) and the Stanford Institute for Economic Policy and Research (SIEPR).

Lobell's research focuses on agriculture and food security, specifically on generating and using unique datasets to study rural areas throughout the world. His early research focused on climate change risks and adaptations in cropping systems, and he served on the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report as lead author for the food chapter and core writing team member for the Summary for Policymakers. More recent work has developed new techniques to measure progress on sustainable development goals and study the impacts of climate-smart practices in agriculture. His work has been recognized with various awards, including the Macelwane Medal from the American Geophysical Union (2010), a Macarthur Fellowship (2013), the National Academy of Sciences Prize in Food and Agriculture Sciences (2022) and election to the National Academy of Sciences (2023).

Prior to his Stanford appointment, Lobell was a Lawrence Post-doctoral Fellow at Lawrence Livermore National Laboratory. He holds a PhD in Geological and Environmental Sciences from Stanford University and a Sc.B. in Applied Mathematics from Brown University.

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This paper looks at past and likely future agricultural growth and rural poverty reduction in the context of the overall Indian economy. The growth of India’s economy has accelerated sharply since the late 1980s, but agriculture has not followed suit. Rural population and especially the labor force are continuing to rise rapidly. Meanwhile, rural-urban migration remains slow, primarily because the urban sector is not generating large numbers of jobs in labor-intensive manufacturing. Despite a sharply rising labor productivity differential between non-agriculture and agriculture, limited rural-urban migration, and slow agricultural growth, urban-rural consumption, income, and poverty differentials have not been rising. Urban-rural spillovers have become important drivers of the rapidly growing rural non-farm sector—the sector now generates the largest number of jobs in India. Rural non-farm self-employment has become especially dynamic with farm households rapidly diversifying into the sector to increase income.

The growth of the rural non-farm sector is a structural transformation of the Indian economy, but it is a stunted one. It generates few jobs at high wages with job security and benefits. It is the failure of the urban economy to create enough jobs, especially in labor-intensive manufacturing, that prevents a more favorable structural transformation of the classic kind. Nevertheless, non-farm sector growth has allowed for accelerated rural income growth, contributed to rural wage growth, and prevented the rural economy from falling dramatically behind the urban economy. The bottling up of labor in rural areas, however, means that farm sizes will continue to decline, agriculture will continue its trend to feminization, and part-time farming will become the dominant farm model. Continued rapid rural income growth depends on continued urban spillovers from accelerated economic growth, and a significant acceleration of agricultural growth based on more rapid productivity and irrigation growth. Such an acceleration is also needed to satisfy the increasing growth in food demand that follows rapid economic growth and fast growth of per capita incomes.  

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In the first decade of the 21st century, global production of ethanol and biodiesel increased nearly tenfold. If that trend continues, says Rosamond L. Naylor, director of Stanford University’s Center on Food Security and the Environment, national biofuels policies will have an increasingly powerful impact on food prices, food security, energy security, and rural incomes in the developing world.

During a two-hour symposium held on the Stanford campus last Wednesday, Naylor addressed the role of biofuels in global food price volatility and the implications of biofuels development in rural Africa and Asia. Although she acknowledged that global income and population growth have contributed to increased demand for biofuels, she also emphasized “the unbelievable dominance of policy” in driving current trends.

“The main part of this that I think is so significant is the use of mandates,” Naylor said. “Policies such as the United States’ Renewable Fuels Standard (RFS), which sets a national target of using 15 billion gallons of corn-based ethanol per year by 2015, have reshaped price and supply dynamics in both food and fuel markets. “

“When you think about the fact that the US provides half of the world’s corn…the fact that we’re using so much in our gas tanks, biofuels really is changing the nature of global markets,” Naylor said. Policies that fix demand for corn from the ethanol market, she explained, have a destabilizing effect on corn prices, especially in the face of supply shortages.

“When you have mandates you have a quantity that you’re absolutely insisting you use, regardless of the price,” she said. “That inelastic demand leads to more volatile prices with supply shocks.”

Because of the substitutability of basic food commodities, Naylor said, price volatility in the corn market has far-reaching consequences. “Prices of corn ripple through all of the world food economy markets…it affects the demand and supply of wheat and rice and soy, and other things,” she explained. And for poor households in the developing world, she said, “it has big income effects…when you’re spending 70 to 80 percent of your budget on food, you’re going to be hurt the most.”

However, Naylor also noted that biofuel mandates in the developed world could provide valuable market opportunities for developing-country farmers.

In rural Africa and Asia, she said, farmers “see the US having a big mandate, EU having a big mandate, and they think, can they supply into that mandated need?”

For now, it seems, the answer is “maybe.” In Africa, for example, efforts are underway to increase the use of jatropha – an inedible, drought-resistant shrub – as a biofuel feedstock. But Naylor said that low yields and high labor costs are likely to severely limit the economic returns from jatropha-based biofuels.

And in marginal growing conditions, the use of more conventional feedstocks is often restricted by resource availability. In India, for example, where almost all sugarcane is grown under irrigated conditions, expansion of sugarcane area to supply the ethanol market could lead to water shortages. Even if these countries can make large-scale biofuel production economically viable, the benefits to poor farmers could vary widely depending on the structure of the market.

“The implications of biofuel development are going to be quite different,” Naylor said, “depending on the organization of the value chain.”

Dr. Siwa Msangi, a Senior Research Fellow with the International Food Policy Research Institute, agreed. In comments following Naylor’s presentation, Msangi said biofuel development contributes most effectively to rural income growth “when you can have vertical integration…people all along the value chain have to be making money.”

Msangi also noted that commodity price increases, including those driven by ethanol mandates, could benefit small farmers if they are controlled and predictable. “Sharp, fast, sudden price rises – those are the ones that are bad for consumers,” he explained. But prices rises “can be positive…especially if those price rises can be gradual and sustained over time, because that gives people the opportunity to mobilize resources to make use of higher returns.” For example, small farmers at the local or national level can increase their production of crops in high demand for biofuel production.

The emerging connections between agriculture and energy markets are complex, Msangi said, but can be advantageous if handled carefully. “If there are good opportunities for agribusiness, I think there’s a case for taking them,” he said, “but also for being aware of the context and all the issues.”

This was the eighth talk in FSE’s Global Food Policy and Food Security Symposium Series

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The Program on Human Rights concluded its ninth and final installment of the Sanela Diana Jenkins International Speakers Series on March 13 with presentations with Dr. Mohammed Mattar, executive director of the Protection Project and professor at Johns Hopkins University and Professor Alison Brysk, chair of Global Governance, Global and International Studies at UC Santa Barbara.

Dr. Mattar noted that while effective anti-trafficking laws depend on law enforcement and survivor protection, the key intellectual and ethical rationale of such laws is the concept of the exploitation of vulnerable people in vulnerable circumstances. Dr. Mattar explained the legal distinction between “human trafficking” and “slavery,” emphasizing that the latter is based on twin ideas of human beings as commodities to be bought and sold, as well as the exercise of ownership of one person over another. “There is no doubt that human trafficking is a degrading and severe violation of basic human rights and fundamental freedoms, but it is unnecessary to label human trafficking as slavery because to do so we would need to identify the exercise of powers attached to the right of ownership,” Mattar said.

Among the challenges for a more effective anti-trafficking effort, Dr. Mattar listed the need to hold corporations responsible for their acts, to provide access to justice that allows for victim compensation, the engagement of civil society, and criminal enforcement and accountability under existing national and international law.

Professor Brysk explained that globalization has produced pernicious side effects.  The acceleration of migration, especially of women, increases the incidence of gender violence and the commodification of “disposable people.” All these factors enable the increase of human trafficking. Brysk observed that international recognition of trafficking as a form of contemporary slavery has been helpful in influencing policy change. “There is a slavery spectrum,” Brysk said. “We need to work to guarantee physical integrity of people, migration rights and children’s rights.”

She also noted that the focus on sex slavery has high costs because it is based on “protection and not empowerment,” and “rescue over rights.” The individualistic emphasis and sexual focus of anti-trafficking efforts fails to recognize many forms of exploitative globalized labor. Women and children are put in dangerous and debilitating non-sexual jobs. There are also many forms of sexual and gender violence in other forms of exploitative globalized labor, such as in sweatshops.

Together, the speakers in the final session of the Program on Human Rights speaker series made a strong plea for more sophisticated understanding of the dynamics of human trafficking in the 21st century. Sustained research that accounts for contemporary conditions, they told the Stanford audience, is needed to give policy makers and legislators the information and tools they need to combat the alarming global acceleration of human trafficking.

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Shinyoung is a PhD candidate at the Graduate Institute of International and Development Studies, Geneva, and joined FSE as a visiting researcher and recipient of a 2012 Fellowship for prospective researchers from the Swiss National Science Foundation.

Her dissertation focuses on agricultural transformation in Indonesia. She recently completed her field research in rural Java in 2011, dealing with challenges facing small farmers in the current process of Indonesian agricultural transformation, and their responses to these challenges. She is analyzing how Indonesian small subsistence farmers can increase labour productivity in the evolving context of the middle-income country trap and green restructuring. She is currently writing about labour transition from agriculture to non-agriculture in middle-income countries, with a focus on rural Java, and the various challenges associated with this process.

Her interests center on occupations in transition, dealing with restructured jobs, labour, and skills. She has worked as a consultant for the International Labour Organization on two projects related to green jobs; she was a coauthor of the joint ILO/EU publication, Skills for Green Jobs, and a contributing author to reports on skills and occupational needs in the green economy.

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Climate change has the potential to be a source of increased variability if crops are more frequently exposed to damaging weather conditions. Yield variability could respond to a shift in the frequency of extreme events to which crops are susceptible, or if weather becomes more variable. Here we focus on the United States, which produces about 40% of the world’s maize, much of it in areas that are expected to see increased interannual variability in temperature. We combine a statistical crop model based on historical climate and yield data for 1950–2005 with temperature and precipitation projections from 15 different global circulation models. Holding current growing area constant, aggregate yields are projected to decrease by an average of 18% by 2030–2050 relative to 1980–2000 while the coefficient of variation of yield increases by an average of 47%. Projections from 13 out of 15 climate models result in an aggregate increase in national yield coefficient of variation, indicating that maize yields are likely to become more volatile in this key growing region without effective adaptation responses. Rising CO2 could partially dampen this increase in variability through improved water use efficiency in dry years, but we expect any interactions between CO2 and temperature or precipitation to have little effect on mean yield changes.

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Climatic Change
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Dan Urban
Wolfram Schlenker
David Lobell
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