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In this discussion piece, eight scholars in geography, urban planning, and agri-food studies from the United States (US) and France engage in a bi-national comparison to deepen our collective understanding of food and land justice. We specifically contextualize land justice as a critical component of food justice in both the US and France in three key areas: access to land for cultivation, urban agriculture, and non-agricultural forms of food provisioning. The US and France are interesting cases to compare, considering the differences and similarities in their colonial and agricultural histories, persistent and systemic race and class-based inequities in land access, and the roles of public bodies and social movements. In this paper, we synthesize literature, share reflections, and offer directions for future scholarship, including a broader comparative research agenda. An important difference we found is in the degree of scholarly attention to race and how it mediates access to land. We also observe that few scholars articulate a clear definition of justice in their work, nor do they share a common justice framework. We hope that this paper contributes to a more robust food and land justice framework for the use of scholars, practitioners and activists. [ABSTRACT FROM AUTHOR]

In the Eastern Snake Plain of Idaho, increasing rates of groundwater extraction for irrigation have corresponded with the adoption of more efficient irrigation technologies; higher use and lower incidental recharge have led to increasing groundwater scarcity. This paper assesses farmer vulnerability to a water resource policy that responds to that scarcity by reducing availability of groundwater for irrigation by 4–20%. Using results from a household survey of impacted farmers, we examine vulnerability in two stages, contributing to theorization of farmer vulnerability in a changing climate as well as producing important regional policy insights. The first stage, multimodel selection and inference, analyzes the primary predictors of two forms of vulnerability to groundwater scarcity among this population of farmers. The second stage, a segmentation analysis, highlights policy-relevant variation in adaptive capacity and in vulnerability predictors across the population. Individual-level results indicate that key indicators of vulnerability include several dimensions of adaptive capacity and sensitivity. At the population level, we find that reductions in sensitivity may play an important role in reducing farmer vulnerability. Accelerating global environmental change will require agriculture in arid and semi-arid regions to adapt to shifts in water availability. As water resources shift, institutional contexts and policy landscapes will shift in parallel, as seen with the reduction in groundwater availability in our case study. These institutional shifts may change the face of adaptation and farmer vulnerability in unexpected ways. Our results indicate that such institutional shifts could lean on efforts to enhance farmer adaptive capacity or reduce farmer sensitivity as mechanisms for reducing farmer vulnerability to adaptation policy changes. [ABSTRACT FROM AUTHOR]

A recent paper in this journal argues that the choice of statistical model is responsible for the divergence in damage estimates of climate change on US agriculture. We provide five arguments why we believe this assertion is misguided. [ABSTRACT FROM AUTHOR]

An introduction is presented in which the editor discusses various reports within the issue on topics including Mexican poultry industry, agriculture in Midwestern U.S., and agricultural biodiversity.

Blacks have been farming in the USA for about four centuries and in Michigan since the 1830s. Yet, for blacks, owning and retaining farmland has been a continuous challenge. This historical analysis uses environmental justice and food sovereignty frameworks to examine the farming experiences of blacks in the USA generally, and more specifically in Michigan. It analyzes land loss, the precipitous decline in the number of black farmers, and the strategies that blacks have used to counteract these phenomena. The paper shows that the ability of blacks to own and operate farms has been negatively impacted by lack of access to credit, segregation, relegation to marginal and hazard-prone land, natural disasters, organized opposition to black land ownership, and systemic discrimination. The paper examines the use of cooperatives and other community-based organizations to help blacks respond to discrimination and environmental inequalities. The paper assesses how the farming experiences of blacks in Michigan compare to the experiences of black farmers elsewhere. It also explores the connections between Michigan’s black farmers, southern black farmer cooperatives, and Detroit’s black consumers. [ABSTRACT FROM AUTHOR]

This paper examines farmer intentions to adapt to global climate change by analyzing responses to a climate change scenario presented in a survey given to large-scale farmers (n = 4778) across the US Corn Belt in 2012. Adaptive strategies are evaluated in the context of decision making and farmers' intention to increase their use of three production practices promoted across the Corn Belt: no-till farming, cover crops, and tile drainage. This paper also provides a novel conceptual framework that bridges a typology of adaptation with concepts that help predict intentionality in behavior change models. This conceptual framework was developed to facilitate examination of adaptive decision making in the context of agriculture. This research effort examines key factors that influence farmers' intentions to increase their use of the practices evaluated given a climate change scenario. Twenty-two covariates are examined across three models developed for no-till farming, cover crops, and tile drainage. Findings highlight that farmers who believed they should adjust their practices to protect their farm from the negative impacts of increased weather variability were more likely to indicate that they would increase their use of each of the practices in response to climate change. Additionally, visiting with other farmers to observe their practices was positively associated with farmers' intentions to increase their use of the adaptive strategies examined. Farmers who were currently using no-till farming, cover crops, and tile drainage were also more likely to plan to increase their use of these practices in response to increased weather variability associated with climate change. However, farmers who reported high levels of confidence in their current practices were less likely to plan on changing their use of these practices in response to climatic changes. [ABSTRACT FROM AUTHOR]

This paper projects the race between technologically driven increases in crop yields and changing climatic conditions in the central USA, one of the world's most productive agricultural regions. Using the highest, average, and lowest decadal rates of technologically driven increases in crop yields over the 1980 to 2017 period, we develop spatially explicit yield scenarios to the end of the twenty-first century under RCP4.5 and RCP8.5. We find that with static technological innovation, severe climate change will decrease yields by an average of 22.4% (26.1 bu. ac−1) for maize, 27.9% (8.83 bu. ac−1) for soybeans, and 20% (7.14 bu. ac−1) for winter wheat in the central USA; however, with even the lowest rates of technological yield growth, yields increase by an average of 25.0% (40.5 bu. ac−1) for maize and 30.2% (14.2 bu. ac−1) for soybeans. We conclude that technology has the potential to overcome the negative impacts of climate change on the yields of maize, soybeans, and winter wheat in the central USA, but if these increases are to be environmentally sustainable, technological developments must be information-intensive rather than input-intensive. [ABSTRACT FROM AUTHOR]

Context: There is widespread consensus about the need for landscape sustainability but little agreement about how to define or measure it. Objectives: The aim of the paper is to present a systematic approach for measuring progress toward landscape sustainability goals. Methods: The approach was developed based on existing literature and our experiences in applying the approach to support more sustainable agricultural landscapes. Examples applying this approach are summarized for case studies in the United States (U.S.) and Mexico. Results: The approach has six steps: the scope and objectives of the assessment are determined based on the particular context; indicators that alert pending concerns are selected and prioritized based on utility and relevance; baselines and targets are established for each indicator, and scenarios for consideration are determined; the indicator values are obtained and evaluated; trends in and tradeoffs among indicator values are analyzed; and good practices are developed, applied, and assessed. Conclusions: Insights gained from applying this approach suggest that designing sustainable landscapes depends on stakeholder engagement, effective communication, transparency and trust, timely monitoring, and continual improvement. Iterative application of the assessment approach builds capacity and promotes continual improvements in management practices, thus enabling timely responses to changing conditions while still progressing toward a set of locally defined goals. [ABSTRACT FROM AUTHOR]

This paper examines the relation between the business cycle and convergence in levels of agricultural productivity across the 48 contiguous states. First, we find evidence of convergence in total factor productivity levels across the different phases of the business cycle, but the speed of convergence was greater during periods of contraction in economic activity than during periods of expansion. Second, we find that technology embodied in capital was an important source of productivity growth in agriculture. As with the rate of catch-up, the embodiment effect was much stronger during low economic activity phases of the business cycle. [ABSTRACT FROM AUTHOR]

The rise of private standards, including those involving multi-stakeholder processes, raises questions about whose interests are served and the kind of power that is exerted to maintain these interests. This paper critically examines the battle for ideas-the way competing factions assert their own narratives about value chain relations, the role of standards and related multi-stakeholder processes. Drawing on empirical research on the horticulture and floriculture value chains linking Kenya and the United Kingdom, the analysis explores the framing of sustainability issues, especially around labor issues and good agricultural practice, and the choice of response with respect to private standards and multi-stakeholder initiatives since the late 1990s. We identify four competing narratives currently in play: a dominant global sourcing narrative, a pragmatic development narrative, a broader development narrative and a narrative we term potentially transformative. This last narrative is currently emerging through the unpacking of narratives in relation to the framing of sustainability problems and solutions, and in terms of legislative, executive and judicial governance. The paper contributes to emerging understanding of power in value chains, moving beyond material power to a consideration of how ideational power is exerted and resisted. [ABSTRACT FROM AUTHOR]

The interior southwest United States is one of the hottest, driest regions on the planet, yet irrigated cropland agriculture is successfully practiced where there is access to surface water and/or groundwater. Through climate change, the southwest is projected to become even hotter and drier, increasing the challenges faced by farmers across the region. We can assess the vulnerability of cropland agriculture, to assist in developing potential solutions to these challenges of warming temperatures and water scarcity. However, these types of biophysical vulnerability assessment usually generate technological or policy-level solutions that do not necessarily account for farmers’ ability to respond to climate change impacts. Further, there are non-climatic factors that also threaten the future of agriculture in the region, such as population increase, loss of agricultural land, and increasing competition for depleting water resources. In this paper, we assert that to fully address how southwestern farmers may respond to climate change impacts, we must consider both biophysical outcome and contextual vulnerabilities. Future research on individual localities and/or specific commodities and including cross-disciplinary analysis of socio-economic, institutional, cultural, and political factors alongside biophysical factors will help to develop more substantive understanding of system vulnerabilities and feasible adaptive solutions. [ABSTRACT FROM AUTHOR]

Assessing regional-scale vulnerability of agricultural systems to climate change and variability is vital in securing food and fiber systems, as well as sustaining rural livelihoods. Farmers, ranchers, and forest landowners rely on science-based, decision-relevant, and localized information to maintain production, ecological viability, and economic returns. This paper synthesizes the collection of research on the future of agricultural production in the Southwestern United States. A variety of assessment methods indicate the diverse impacts and risks across the Southwest, often related to water availability, which drives adaptive measures in this region. Sector- or species-specific adaptive measures have long been practiced in this region and will continue to be necessary to support agricultural production as a regional enterprise. Diversification of crop selection and income source imparts climate resilience. Building upon biophysical vulnerability through incorporating social and economic factors is critical to future adaptation planning efforts. The persistence and adaptive capacity of agriculture in the water-limited Southwest serves as an instructive example for producers outside the region expecting drier and warmer conditions and may offer solutions to reduce future climate impacts. [ABSTRACT FROM AUTHOR]

In multilateral comparisons of environmental performance over time, energy intensity measures, especially Breal^ energy intensity computed either by index decomposition approach or structural decomposition approach, are the most commonly used measures. Recently, researchers also resort to productiontheoretical approach, which relies on data envelopment analysis techniques, to decompose energy intensity changes over time into their subcomponents.While their intuitiveness and computational ease make these indices attractive, their time series properties create considerable challenges in performing informative and fair comparisons among the energy efficiency levels of units considered. Furthermore, the resultant measure of energy intensity in these studies is still the inverse of a partial factor productivity (PFP) measure, i.e., energy productivity, that does not take into consideration compositional differences between inputs of the units being compared (which are also subject to change over time) and that ignores the type of substitution among inputs and, hence, makes it a measure that disguises rather than illuminates. The theoretical part of this paper shows how one can overcome the shortcomings of the energy intensity measure by constructing a new energy index using directional technology distance functions. The new index constructed in this study not only overcomes the shortcomings of the energy intensity measures but also satisfies the axiomatic properties of index numbers that are laid down by Fisher. An empirical application on U.S state-level agricultural sectors further complements existing studies. [ABSTRACT FROM AUTHOR]

The states of Colorado, Montana, Nebraska, North Dakota, South Dakota, and Wyoming comprise the Northern Great Plains region of the USA. The soil and water resources contained in this region have historically supported highly diverse and productive agriculture enterprises that provide a significant proportion of the food, feed, and oilseed for the nation. The region also provides ecological services that influence air, water, and soil quality along with biological diversity. Combined with livestock production and a biofuel industry, crop production forms an integrated system that can offer producers flexibility in management decisions. Projected climatic changes for this region include increasing atmospheric CO2, a longer, warmer growing season, and increased precipitation, likely received in more frequent extreme events. These changes will impact soil and water resources in the region and create opportunities and challenges for land managers. The objectives of this paper are to describe anticipated impacts of projected mid-(2050) and late-(2085) climatic changes on crop production systems in the Northern Great Plains and provide adaptation strategies that should be developed to take advantage of positive and mitigate negative changes. Projected climatic changes will influence agricultural productivity directly as well as indirectly due to changes in weed pressure, insect populations, and diseases. A warmer, longer growing season will change the crops and distribution of those crops grown within the region. An increase in the number of extreme temperature events (high daytime highs or nighttime lows) will decrease crop yields due to increased plant stress during critical pollination and grain fill periods. Adaptation strategies to reduce vulnerability of soil and water resources to projected climatic changes include increasing cropping intensity, reducing tillage intensity, and use of cover crops to provide surface cover to reduce erosion potential and improve nutrient and water use efficiency. Increased use of perennial forages, crop residue, and failed crops in integrated crop-livestock systems will add biological diversity and provide options for converting vegetation biomass into animal protein. Socio-economic changes will need to be incorporated into adaptation strategies planning to insure that sustaining ecosystem services and meeting desired production and conservation goals is accomplished. Education and extension services will be needed to transfer adaptive knowledge in a timely manner to producers in the field. [ABSTRACT FROM AUTHOR]

Measures of productivity growth are often pro-cyclical. This paper focuses on measurement errors in capital inputs, associated with unobserved variations in capital utilization rates, as an explanation for the existence of pro-cyclical patterns in measures of productivity. Recently constructed national and state-specific indexes of inputs, outputs, and productivity in U.S. agriculture for 1949-2002 are used to estimate production functions that include proxy variables for changes in the utilization of durable inputs. The proxy variables include an index of farmers' terms of trade and an index of local seasonal growing conditions. We find that utilization responses by farmers are significant and bias measures of productivity growth in a pro-cyclical pattern. We quantify the bias, adjust the measures of productivity for the estimated utilization responses, and compare the adjusted and conventional measures. [ABSTRACT FROM AUTHOR]

This paper tests whether climate has an impact on per capita rural income. The study finds that total (agricultural and nonagricultural) income in rural counties and municipios in the US and Brazil are affected by climate. The study demonstrates that this income effect is due to changes in the net value of agriculture. Regions with better climates for agriculture support higher rural incomes and regions with poor climates have more rural poverty. The results also suggest that global warming will likely increase rural poverty. [ABSTRACT FROM AUTHOR]

US livestock agriculture has developed and intensified according to a strict productionist model that emphasizes industrial efficiency. Sustainability problems associated with this model have become increasingly evident and more contested. Traditional approaches to promoting sustainable agriculture have emphasized education and outreach to encourage on-farm adoption of alternative production systems. Such efforts build on an underlying assumption that farmers are empowered to make decisions regarding the organization and management of their operations. However, as vertical coordination in agriculture continues, especially in the animal agriculture sectors, this assumption becomes less valid. This paper examines how the changing industrial structure in four US livestock sectors (poultry, hogs, beef, and dairy) affects possibilities in each for promoting more sustainable production practices. Comparisons between the sectors are based on the relative ability to employ an intensive pasture or alternative (deep-bedded) housing system, which are widely seen as sustainable livestock alternatives. While the highly integrated poultry sector appears impregnable to traditional sustainable agriculture approaches, the cow-calf sub-sector of the beef industry, non-feedlot dairy operations, and small parts of the hog industry, especially in the Midwest, still retain some potential for effectively targeting the farmer. Building on the presentation of barriers and opportunities in the four livestock sectors, the paper concludes by evaluating several structurally-oriented approaches to promoting a more sustainable livestock agriculture that should complement more traditional approaches. They include developing alternative coordinated networks in livestock agriculture, pressing integrators to permit more sustainable production practices, and working for legislation that shifts more decision-making within integrated systems towards growers. [ABSTRACT FROM AUTHOR]

A survey was conducted in the United States in 1998 and 1999 to determine what members of the National Association of State Universities and Land Grant Colleges (NASULGC) and of the American Association of State Colleges and Universities (AASCU) offered agricultural ethics as an undergraduate course. Of the 59 responses, the survey found 15 US universities that have a course on agricultural ethics or one that includes the topic. This paper will discuss the survey''s findings and offer six reasons that explain why so few universities include agricultural ethics in their curriculum. The six reasons are: 1) lack of education in ethics and philosophy on the part of agricultural scientists; 2) lack of institutional or disciplinary incentives for agricultural scientists to reflect on their work and its effects; 3) lack of administrative leadership in colleges of agriculture due to their failure to understand the benefits of agricultural ethics; 4) continuance of the prevailing assumption that agriculture is inherently ethically correct; 5) the felt necessity by agricultural scientists to defend themselves against what are perceived to be unjust and inaccurate criticisms of agriculture; and 6) a reluctance to engage in ethical reflection because it may raise more problems than it solves. The paper''s central question is why ethics is not taught in more colleges of agriculture. Those who teach know that their students are tomorrow''s farmers, business people, professors, and policy makers. If we who now teach and administer fail to include true ethical study in our student''s education, our students will still be defensive when confronted with an ethical issue and unable to respond except with assertions based on the production paradigm, the correctness of which, although unexamined, we taught them. If the agricultural faculty does not recognize the opportunity and the obligation to participate in the shaping of values, then the values of agriculture will be shaped elsewhere in the institution and in society. [ABSTRACT FROM AUTHOR]

Many studies suggest that warming is harmful to American crop yields because of a temperature threshold near 30 °C whereupon yields abruptly fall. This study uses a flexible daily temperature bin specification in a Ricardian model to measure the response of farmland value to daily temperature. The analysis does not find evidence that high temperatures are particularly harmful to farmland or cropland value in the Eastern United States. Instead, temperature has a smooth hill-shaped effect on farmland value with a peak temperature of about 18 °C. Nonetheless, the Ricardian model predicts that cropland values would fall linearly by 15%/°C with uniform warming, while farmland values of mixed farms would fall far less. [ABSTRACT FROM AUTHOR]

Background: Two major factors that determine the efficiency of programs designed to mitigate greenhouse gases by encouraging voluntary changes in U.S. agricultural land management are the effect of land use changes on producers' profitability and the net sequestration those changes create. In this work, we investigate how the interaction of these factors produces spatial heterogeneity in the cost-efficiency of voluntary programs incentivizing tillage reduction and cover-cropping practices. We map county-level predicted rates of adoption for each practice with the greenhouse gas mitigation or carbon sequestration benefits expected from their use. Then, we use these bivariate maps to describe how the cost efficiency of agricultural mitigation efforts is likely to vary spatially in the United States. Results: Our results suggest the combination of high adoption rates and large reductions in net emissions make reduced tillage programs most cost efficient in the Chesapeake Bay watershed or the Upper Mississippi and Lower Missouri sub-basins of the Mississippi River. For programs aiming to reduce net emissions by incentivizing cover-cropping, we expect cost-efficiency to be greatest in the areas near the main stem of the Mississippi River within its Middle and Lower sections. Conclusions: Many voluntary agricultural conservation programs offer the same incentives across the United States. Yet spatial variation in profitability and efficacy of conservation practices suggest that these uniform approaches are not cost-effective. Spatial targeting of voluntary agricultural conservation programs has the potential to increase the cost-efficiency of these programs due to regional heterogeneity in the profitability and greenhouse gas mitigation benefits of agricultural land management practices across the continental United States. We illustrate how predicted rates of adoption and greenhouse gas sequestration might be used to target regions where efforts to incentivize cover-cropping and reductions in tillage are most likely to be cost -effective. [ABSTRACT FROM AUTHOR]

American Indian and Alaska Native tribes are uniquely affected by climate change. Indigenous peoples have depended on a wide variety of native fungi, plant and animal species for food, medicine, ceremonies, community and economic health for countless generations. Climate change stands to impact the species and ecosystems that constitute tribal traditional foods that are vital to tribal culture, economy and traditional ways of life. This paper examines the impacts of climate change on tribal traditional foods by providing cultural context for the importance of traditional foods to tribal culture, recognizing that tribal access to traditional food resources is strongly influenced by the legal and regulatory relationship with the federal government, and examining the multi-faceted relationship that tribes have with places, ecological processes and species. Tribal participation in local, regional and national climate change adaption strategies, with a focus on food-based resources, can inform and strengthen the ability of both tribes and other governmental resource managers to address and adapt to climate change impacts. [ABSTRACT FROM AUTHOR]

In agriculture, the principle of coexistence refers to a condition where different primary production systems can exist in the vicinity of each other, and can be managed in such a way that they affect each other as little as possible. Coexistence policies aim to ensure that farmers are able to freely grow the crops they choose-be they genetically engineered (GE), non-GE conventional, or organic. In the United States (US), the issue of coexistence has very recently come into sharp relief with the introduction of Roundup Ready (RR) alfalfa, a landmark court decision in 2007 ( Geertson v. Johanns), and subsequent governmental actions, including the first Environmental Impact Statement on a GE crop. By contrast, in 2003 the European Union (EU) created a policy to manage coexistence and to address economic harms that may be caused by contamination. We briefly review the EU framework as an instructive resource. This policy analysis then looks at the US organic industry and its standards with respect to GE before turning to the case of RR alfalfa. With a focus on the field trial stage and on environmental assessments prior to market approval, the case reveals numerous problems in the existing regulatory framework as it pertains to coexistence and prevention of contamination of organic products with GE material. The paper concludes with specific policy recommendations for creating a more robust coexistence policy in the US. [ABSTRACT FROM AUTHOR]

All farmers have their own version of what it means to be a good farmer. For many US farmers a large portion of their identity is defined by the high input, high output production systems they manage to produce food, fiber or fuel. However, the unintended consequences of highly productivist systems are often increased soil erosion and the pollution of ground and surface water. A large number of farmers have conservationist identities within their good farmer identity, however their conservation goals often need to be activated to rebalance the production-conservation meanings they give to their roles in society. In this paper we analyze US Cornbelt farmer interviews and surveys to trace how the performance-based environmental management process can be used to influence the farmer social identity and shift the overall good farmer identity towards a stronger conservationist standard. We find the continuous feedback loop in performance-based environmental management mimics the hierarchically organized feedback control processes of identity verification and can be used to help farmers activate their conservationist farmer identities at the person, role, and social levels to establish new norms for the practice of more sustainable agriculture. [ABSTRACT FROM AUTHOR]

Although the concept of food sovereignty is rooted in International Peasant Movements across the global south, activists have recently called for the adoption of this framework among low-income communities of color in the urban United States. This paper investigates on-the-ground processes through which food sovereignty articulates with the work of food justice and community food security activists in Oakland, California, and Seattle, Washington. In Oakland, we analyze a farmers market that seeks to connect black farmers to low-income consumers. In Seattle, we attend to the experiences of displaced immigrant farmers from Latin America and their efforts to address their food needs following migration. In both cases, we find that US based projects were constrained by broader forces of neoliberalism that remained unrecognized by local activists. In Oakland, despite a desire to create a local food system led by marginalized African Americans, emphasis on providing green jobs in agriculture led activists to take a market-based approach that kept local food out of the economic grasp of food-insecure neighborhood residents. In Seattle, the marginalization of the immense agroecological knowledge of Latino/an immigrant farmers rendered local food projects less inclusive and capable of transformative change. Taken together, these very different cases suggest that a shift towards food sovereignty necessitates a broad acknowledgement of and resistance to neoliberalism. [ABSTRACT FROM AUTHOR]

Originally created by the international peasant movement La Vía Campesina, the concept of 'food sovereignty' is being used with increasing frequency by agrifood activists and others in the Global North. Using the analytical lens of framing, I explore the effects of this diffusion on the transformative potential of food sovereignty. US agrifood initiatives have recently been the subject of criticism for their lack of transformative potential, whether because they offer market-based solutions rather than demanding political ones or because they fail to adequately address existing social injustice. In this paper, I consider how food sovereignty measures up to this critique both as it was originally framed by Vía Campesina and as it is being reframed for the US context. First I briefly compare food sovereignty to community food security (CFS), which was developed more explicitly for the North American context and has been criticized for its lack of transformative potential. I then explore how the potential of food sovereignty has been affected as it is reframed to resonate with US audiences through an examination of its use on the web sites of US-based organizations. I find that, while some reframing of the concept to highlight consumer choice does seem to be occurring, it remains a primarily political concept. It may not, however, be fulfilling its potential for addressing social injustice in the US agrifood system because it tends to be used either in reference to international issues or, when applied to the US context, treated as a rough synonym for local control. I conclude that, if advocates can successfully guide the reframing process, food sovereignty could serve as a valuable counter-hegemonic vision to complement the more pragmatic and locally-grounded work of CFS advocates. [ABSTRACT FROM AUTHOR]

The Regional Greenhouse Gas Initiative for the northeastern states of the U.S. allows for terrestrial carbon (C) sequestration offsets generated by afforestation activities only. This paper estimates the maximum potential quantity and associated costs of increasing the storage of carbon by afforestation of existing agricultural land in the 11 states of the Northeast United States. The focus of the work was to describe location, the quantity, and at what cost it would be economically attractive to shift agricultural production to afforestation to increase carbon storage in the region. Widely available data sets were used to (1) identify spatially-explicit areas for lower costs carbon offsets and (2) estimate carbon supply curves related to afforestation of agricultural land over three time periods (10, 20, and 40 years). Carbon accumulation and total carbon offset project costs were estimated at a county scale and combined to identify expected costs per ton of carbon dioxide equivalents (COe). Large variation in estimated costs per ton of COe are driven by varying carbon accumulation potentials and opportunity costs of taking land out of agricultural production, as well as the duration of the project activity. Results show that the lowest cost carbon offset projects will be in certain counties of Maine, Vermont, and New York. Pasture land, with lower opportunity costs, generally presents the opportunity for lower cost carbon offset projects relative to cropland. This analysis estimates that afforestation of pasture land in the northeast will not become economically attractive until the price rises above $10 per metric tonne (MT) COe and that up to 583 million MT could be economically sequestered if the price were to rise to $50 per MT COe, based on a 40-year project life. With regard to cropland in the northeast, afforestation does not become economically advantageous for land owners until the price rises above $40 per MT COe. It is estimated that up to 487,000 MT could be sequestered from cropland if the price were to rise to $50 per MT COe, based on a 40-year project life. [ABSTRACT FROM AUTHOR]

Farm to school programs are at the vanguard of efforts to create an alternative agrifood system in the United States. Regionally-based, mid-tier food distributors may play an important role in harnessing the potential of farm to school programs to create viable market opportunities for small- and mid-size family farmers, while bringing more locally grown fresh food to school cafeterias. This paper focuses on the perspectives of food distributors. Our findings suggest that the food distributors profiled have the potential to help institutionalize farm to school programs. Notably, their relationships with farmers may be a critical element in expanding the scale and scope of local school food procurement. Their ability to catalyze local school food procurement however, is limited by the structural context in which farm to school programs operate. Specifically, the oppositional school year and agriculture production cycle, and tight food service budget constraints disembed and limit the potential of farm to school programs to decrease the “marketness” of school food procurement and to shift it from a process based largely on price to one that is more territorially embedded. As farm to school programs continue to gain support, regionally-based food distributors that have the meaningful relationships necessary to re-embed the school food service market back into the larger society may be critical to enabling advocates to achieve their goals. [ABSTRACT FROM AUTHOR]

This paper will visually show, through the use of historic and contemporary photographs, that the National Reclamation Act is a cornerstone of growth in the West. The irrigation works constructed under the federal reclamation program provided a stable water supply for crops, transforming the desert to the farmlands, and continued with the development of cities, businesses, and communities. Hydropower, a by-product of water development, initially operated irrigation pumps and lighted homes, and now powers industries. Salt River Project (SRP), as one of the first multi-purpose reclamation projects authorized by the federal government, provided irrigation water to the settlers of the Salt River Valley at the beginning of the twentieth century. Over 100 years later, SRP continues that tradition and is still delivering water to its shareholders and customers, but now in an urban setting. [ABSTRACT FROM AUTHOR]

The US food retailing industry continues to concentrate and consolidate. Power in the agriculture, food, and nutrition system has shifted from producers to processors, and is now shifting to retailers. Currently, only eight food-retailing corporations control the majority of food sales in the United States. Expanding on previous research by Lyson and Raymer (, Agriculture and Human Values 17: 199–208), this paper examines the characteristics of the boards of directors of the leading food retailing corporations and the indirect interlocks that bind the food retailers into a corporate community. [ABSTRACT FROM AUTHOR]

The temporal pattern of technical efficiency in the technical inefficiency effects model, as modeled by Battese and Coelli (Empir Econ 20:325–332, 1995), is rather restrictive. Specifically, it a priori imposes a common pattern upon all firms in the sample, which in addition is monotonic over time. Obviously this is an undesirable implication of the model especially when there is evidence of strong firm heterogeneity and/or a long time span. To overcome this shortcoming, the present paper incorporates the Cornwell et al. (J Econom 46:185–200, 1990) flexible specification of the temporal pattern of technical efficiency into technical inefficiency effects model. The proposed formulation is then applied to the agricultural sector of the EU and US, during the period 1973–1993. The empirical result support the proposed formulation as quite different temporal patterns of technical efficiency have been found for the ten countries included in the analysis. [ABSTRACT FROM AUTHOR]

Greenhouse gas abatement policies will increase the demand for renewable sources of energy, including bioenergy. In combination with a global growing demand for food, this could lead to a food-fuel competition for bio-productive land. Proponents of bioenergy have suggested that energy crop plantations may be established on less productive land as a way of avoiding this potential food-fuel competition. However, many of these suggestions have been made without any underlying economic analysis. In this paper, we develop a long-term economic optimization model (LUCEA) of the U.S. agricultural and energy system to analyze this possible competition for land and to examine the link between carbon prices, the energy system dynamics and the effect of the land competition on food prices. Our results indicate that bioenergy plantations will be competitive on cropland already at carbon taxes about US $20/ton C. As the carbon tax increases, food prices more than double compared to the reference scenario in which there is no climate policy. Further, bioenergy plantations appropriate significant areas of both cropland and grazing land. In model runs where we have limited the amount of grazing land that can be used for bioenergy to what many analysts consider the upper limit, most of the bioenergy plantations are established on cropland. Under the assumption that more grazing land can be used, large areas of bioenergy plantations are established on grazing land, despite the fact that yields are assumed to be much lower (less than half) than on crop land. It should be noted that this allocation on grazing land takes place as a result of a competition between food and bioenergy production and not because of lack of it. The estimated increase in food prices is largely unaffected by how much grazing land can be used for bioenergy production. [ABSTRACT FROM AUTHOR]

One of the banes of farming is the frequent complete loss of crops due to adverse weather conditions or pests. In this paper, we explore what causes catastrophic crop failures. The study demonstrates that 39% of the variation in expected crop failure rates across the United States can be explained by soils and climate. The analysis shows that precipitation, soils, and especially temperature all explain average crop failure rates. Surprisingly, the analysis did not suggest that annual warming would increase crop failure rates. However, decreases in annual precipitation or increases in interannual or diurnal variation would all be harmful to crops. [ABSTRACT FROM AUTHOR]

The purpose of this paper is to develop and apply a new method to assess economic potential for agricultural greenhouse gas mitigation. This method uses secondary economic data and conventional econometric production models, combined with estimates of soil carbon stocks derived from biophysical simulation models such as Century, to construct economic simulation models that estimate economic potential for carbon sequestration. Using this method, simulations for the central United States show that reduction in fallow and conservation tillage adoption in the wheat-pasture system could generate up to about 1.7 million MgC/yr, whereas increased adoption of conservation tillage in the corn--soy--feed system could generate up to about 6.2 million MgC/yr at a price of $200/MgC. About half of this potential could be achieved at relatively low carbon prices (in the range of $50 per ton). The model used in this analysis produced estimates of economic potential for soil carbon sequestration potential similar to results produced by much more data-intensive, field-scale models, suggesting that this simpler, aggregate modeling approach can produce credible estimates of soil carbon sequestration potential. Carbon rates were found to vary substantially over the region. Using average carbon rates for the region, the model produced carbon sequestration estimates within about 10% of those based on county-specific carbon rates, suggesting that effects of spatial heterogeneity in carbon rates may average out over a large region such as the central United States. However, the average carbon rates produced large prediction errors for individual counties, showing that estimates of carbon rates do need to be matched to the spatial scale of analysis. Transaction costs were found to have a potentially important impact on soil carbon supply at low carbon prices, particularly when carbon rates are low, but this effect diminishes as carbon prices increase. [ABSTRACT FROM AUTHOR]

In the US, an increasingly popular local food movement is propelled along by structural arguments that highlight the inequity and unsustainablity of the current agri-food system and by individually based arguments that highlight personal health and well-being. Despite clear differences in their foci, the deeper values contained in each argument tend to be neglected or lost, while local innovations assume instrumental and largely market-based forms. By narrowing their focus to the rational and the economic, movement activists tend to overlook (or marginalize) the role of the sensual, the emotional, the expressive for maintaining layered sets of embodied relationships to food and to place. This paper seeks to show that cultural and nonrational elements are fundamental to local food discussions. It proceeds from the assumption that, without them as full partners, the movement cannot be sustained in any felt, practiced, or committed way. To this end, it discusses the concept of place and bodies in place, as well as the connections between the ecological and the cultural, the sensual and the scientific. It offers a new set of questions and conceptual tools with which advocates and activists may "ground," and thereby revalue and restore, the promise and practice of local food. [ABSTRACT FROM AUTHOR]

Abstract During this century global warming will lead to changes in global weather and climate, affecting many aspects of our environment. Agriculture is the sector of the United States economy most likely to be directly impacted by climatic changes. We have examined potential changes in dryland agriculture (Part 3) and in water resources necessary for crop production (Part 4) in response to a set of climate change scenarios. In this paper we assess to what extent, under these same scenarios, water supplies will be sufficient to meet the irrigation requirement of major grain crops in the US. In addition, we assess the overall impacts of changes in water supply on national grain production. We apply the 12 climate change scenarios described in Part 1 to the water resources and crop growth simulation models described in Part 2 for the conterminous United States. Drawing on data from Parts 3 and 4 we calculate what the aggregate national production would be in those regions in which grain crops are currently produced by applying irrigation where needed and water supplies allow. The total amount of irrigation water applied to crops declines under all climate change scenarios employed in this study. Under certain of the scenarios and in particular regions, precipitation decreases so much that water supplies are too limited; in other regions precipitation becomes so plentiful that little value is derived from irrigation. Nationwide grain crop production is greater when irrigation is applied as needed. Under irrigation, less corn and soybeans are produced under most of the climate change scenarios than is produced under baseline climate conditions. Winter wheat production under irrigation responds significantly to elevated atmospheric carbon dioxide concentrations [CO2] and appears likely to increase under climate change. [ABSTRACT FROM AUTHOR]

In one study funded by the United States Department of Agriculture, people from North Dakota were interviewed to discover which moral principles they use in evaluating the morality of transgenic organisms and their introduction into markets. It was found that although the moral codes the human subjects employed were very similar, their views on transgenics were vastly different. In this paper, the codes that were used by the respondents are developed, compared to that of the academically composed Belmont Report, and then modified to create the more practical Common Moral Code. At the end, it is shown that the Common Moral Code has inherent inconsistency flaws that might be resolvable, but would require extensive work on the definition of terms and principles. However, the effort is worthwhile, especially if it results in a common moral code that all those involved in the debate are willing to use in negotiating a resolution to their differences. [ABSTRACT FROM AUTHOR]

A large body of research suggests that US cropland soils can also sequester significant amounts of C and are a promising source of C credits. This paper presents a framework for assessing the transactions costs associated with per-hectare and per-credit contract types and addresses the potential magnitude of transactions costs associated with measuring soil C credits under a per-credit contract within the dry-land crop region of Montana, USA. In the empirical analysis, we estimate the total measurement costs for soil C credits and investigate how changes in contract (and region) size as well as increases in C credit variability affect total measurement costs. The empirical analyses suggest that increasing the size of the contract and aggregating credits over a larger number of producers can lower measurement costs associated with the per-credit contract, even in the face of increasing C variability. Thus contracts for large quantities of soil credits increase the likelihood that the per-credit contract remains more efficient than the per-hectare contract. However, these empirical results reflect the specific data and conditions present within the case study region. The theoretical expectation is that sample size and measurement costs can either increase or decrease as the population to be sampled increases. Thus the measurement costs associated with a per-credit contract could respond differently from this analysis across the spatial extent of the US. [ABSTRACT FROM AUTHOR]

The purpose of the paper is to propose and test a new approach to simulating farmers' agronomic adaptation to climate change based on the pattern of adoption of technological innovation/substitution over time widely described as a S-shaped (or logistic) curve, i.e., slow growth at the beginning followed by accelerating and then decelerating growth, ultimately leading to saturation. The approach we developed is tested using the Erosion Productivity Impact Calculator crop model applied to corn production systems in the southeastern U.S. using a high-resolution climate change scenario. Corn is the most extensively grown crop in the southeastern U.S. The RegCM limited area model nested within the CSIRO general circulation model generated the scenario. We compare corn yield outcomes using this new form of adaptation (logistic) with climatically optimized (clairvoyant) adaptation. The results show logistic adaptation to be less effective than clairvoyant adaptation in ameliorating climate change impacts on yields, although the differences between the two sets of yields are statistically significant in one case only. These results are limited by the reliance on a single scenario of climate change. We conclude that the logistic technique should be tested widely across climate change scenarios, crop species, and geographic areas before a full evaluation of its effect on outcomes is possible. [ABSTRACT FROM AUTHOR]

Increase in the use of conservation practices by agriculture in the United States will enhance soil organic carbon and potentially increase carbon sequestration. This, in turn, will decrease the net emission of carbon dioxide. A number of studies exist that calibrate the contribution of various individual, site-specific conservation practices on changes in soil organic carbon. There is a general absence, however, of a comprehensive effort to measure objectively the contribution of these practices including conservation tillage, the Conservation Reserve Program, and conservation buffer strips to an change in soil organic carbon. This paper fills that void. After recounting the evolution of the use of the various conservation practices, it is estimated that organic carbon in the soil in 1998 in the United States attributable to these practices was about 12.2 million metric tons. By 2008, there will be an increase of about 25%. Given that there is a significant potential for conservation practices to lead to an increase in carbon sequestration, there are a number of policy options that can be pursued. [ABSTRACT FROM AUTHOR]

Increase in the use of conservation practices by agriculture in the United States will enhance soil organic carbon and potentially increase carbon sequestration. This, in turn, will decrease the net emission of carbon dioxide. A number of studies exist that calibrate the contribution of various individual, site-specific conservation practices on changes in soil organic carbon. There is a general absence, however, of a comprehensive effort to measure objectively the contribution of these practices including conservation tillage, the Conservation Reserve Program, and conservation buffer strips to an change in soil organic carbon. This paper fills that void. After recounting the evolution of the use of the various conservation practices, it is estimated that organic carbon in the soil in 1998 in the United States attributable to these practices was about 12.2 million metric tons. By 2008, there will be an increase of about 25%. Given that there is a significant potential for conservation practices, which could lead to an increase in carbon sequestration, there are a number of policy options that can be pursued. These include education and technical assistance, financial assistance, research and development, land retirement, and regulation and taxes. [ABSTRACT FROM AUTHOR]

This paper develops a framework for measuring and decomposing TFP changes, within the parametric approach, by using directly the estimated parameters of a profit function. Two alternative relationships are derived for measuring and decomposing TFP changes via a profit function based on two alternative definitions of the rate of technical change, i.e., input- and output-based. Initially a long-run equilibrium framework is assumed and then the analysis is extended to the case of temporary equilibrium. The latter framework is applied to US agriculture by estimating a translog profit function and analyzing TFP changes during the period 1948-1994. [ABSTRACT FROM AUTHOR]

This paper investigates the importance of agricultural land shortages versus modernization of the society in influencing inter-state differentials in fertility in 1900, when the United States was in mid-transition. Urbanization and manufacturing characteristics of states were the strongest correlates of variations in the index of total fertility because urban-industrialism depressed both the probability of marriage and marital fertility. Other modern characteristics of American states were also important in understanding variations in marital fertility. Low labor force employment of children and farm mechanization, integrally related characteristics, seemed to depress levels of marital fertility in many parts of the United States, independent of the urban-industrial system. Agricultural land opportunity had little overall effect on marital fertility; however, it was quite important in understanding variations in patterns of marriage. [ABSTRACT FROM AUTHOR]

Background: One issue in invasive plant ecology is identification of the factors related to the invasion process that increase number of non-native species. When invasion by non-native species increases, so does the probability that some non-native species will become harmful, or classified as invasive species, which disrupt natural ecosystems with attendant economic and social costs. I quantified patterns of how non-native species richness varied with vegetation types and human populations. To evaluate the relative importance of different predictor variables for invasion pathways in the conterminous United States, I modeled non-native plant species richness by county compared to current and historical human populations; greenhouses and nurseries; railroads, pipelines, transmission lines, and oil and gas wells; and land covers of impervious surface, development intensity categories, agriculture, and vegetation types. I also modeled these variables within vegetation types, excluding vegetation variables. Results: To summarize patterns, non-native plant species richness increased from 72 to 200 with increasing human population density classes. Forests and forest land use mosaics had the greatest mean number of non-native plant species, ranging from 121 to 166, whereas grasslands and grassland mosaics had the least number of non-native plant species, about 70. For modeling variable importance, all combined variables had R2 values of 56% (random forests regressor) and 54% (cubist regressor) for predictions of withheld observations of non-native plant species richness, with greenhouse density and percent forestlands as most influential variables. Single variables of greenhouses (R2 = 29%), historical and current human populations (R2 = 27% and 23%), impervious surface (25%), and medium intensity development (23%) were most associated with non-native plant species richness. For vegetation types, greenhouse and historical human population densities were influential variables particularly in forestlands, shrublands, and wetlands. Conclusions: Based on these models, human population measures and horticultural locations of greenhouses and plant nurseries may have stronger relationships than measures of land use disturbance and transport with non-native plant species richness. [ABSTRACT FROM AUTHOR]

Purpose: The burden of health and safety related issues emanating from the modern workplace is overwhelming. Although the prevailing statistics found in the literature show that victims of workplace fatalities and injuries are higher in developing countries and transition economies, there is a very limited understanding of the causal factors that may correspond to the continuous increase in the occupational exposure of employees to various fatalities and injuries. The purpose of this study was to review the literature on occupational safety of workers with the objective of highlighting the major causal factors of workplace injuries and fatalities from a multi-regional perspective, particularly on job-contexts with highest safety and health related hazards. Methodology: A systematic review of the literature was conducted on 73 empirical studies in the regions of Europe, Africa, the Middle East, Asia, Australia, and the Americas (the US & Canada). Findings: The results showed that the highest number of injuries and fatalities were mostly found in the construction industry. It further emerged that most of the studies were centered in developing countries within Africa and Asia. Other results and recommendations were discussed for each region. Value: The findings from this study have the potential to expose the regional dynamics in relation to safety in the workplace. This study also addresses the main areas of concern for stakeholders to promote organizational development and safety culture. [ABSTRACT FROM AUTHOR]

Experimental cattle aided agricultural scientists throughout the nineteenth and twentieth centuries in their efforts to produce beef and milk more efficiently for the growing human populations of the United States. Feed experiments were especially important for understanding how and what cattle needed to eat to better produce this food. However, as experts dedicated their time toward creating the most "economical" rations, their organism of focus shifted. This essay describes how scientific efforts to understand feed conversion in livestock became increasingly focused on the role of ruminant microorganisms over the course of the twentieth century. Highlighting media coverage of fistulated cows and the design of artificial rumens, I argue that the scientific shift from macro- to microorganism was contemporaneously embraced and, in turn, funded by agricultural chemical companies to better market animal feed products by the postwar period. [ABSTRACT FROM AUTHOR]

The United States and Brazil are key players in the international market for orange juice, mainly frozen concentrated orange juice (FCOJ). The U.S. orange juice industry benefits from one of the highest levels of import protection in U.S. agriculture. Additional trade protection was recently added with a U.S. industry victory in an antidumping trade suit against Brazil. We study the impact of FCOJ imports from Brazil on U.S. prices using time series econometric models and find only a weak FCOJ domestic price response to imports from Brazil, because extremely large U.S. inventories mute the price impact of any fluctuation in imports. Our findings imply that the antidumping tariffs were unjustified based on a material injury argument. [ABSTRACT FROM AUTHOR]

We document the substantial process of structural transformation—the reallocation of labor between agriculture, manufacturing, and services—and aggregate productivity growth undergone by Portugal between 1956 and 1995. We assess the quantitative role of sectoral labor productivity in accounting for these processes. We calibrate a model of the structural transformation to data for the United States and use the model to gain insight into the factors driving the structural transformation and aggregate productivity growth in Portugal. The model implies that Portugal features low and roughly constant relative productivity in agriculture and services (around 22%) and a modest but growing relative productivity in manufacturing (from 44 to 110%). We find that productivity growth in manufacturing accounts for most of the reduction of the aggregate productivity gap with the United States and that a further closing of this gap can only be accomplished via improvements in the relative productivity of services. [ABSTRACT FROM AUTHOR]

In this paper, we develop a theoretically consistent framework to incorporate the environmental effects of agricultural production and the depletion of natural capital caused by agricultural production intothe existing income accounts. We apply the framework and adjust the income attributed to the agricultural sector and economy-wide net national product (NNP) for the United States. Estimated adjustments to the income attributed to agriculture are in the range of $4 billion and have declined as a percentage of net farm income since 1982. [ABSTRACT FROM AUTHOR]

Flood events are one of the most destructive and yet increasingly frequent natural hazards causing a considerable amount of economic losses in the United States (US). The agricultural sector is particularly vulnerable to flood hazards. The representation of spatiotemporal distributions of the agricultural damage and the vulnerability of the agricultural communities are essential for flood risk management. Therefore, this study investigates spatiotemporal Socioeconomic flood vulnerability of the agricultural communities in the Potomac River Watershed (PRW), where corn and soybeans cultivation are one of the important agricultural activities. In this context, a combination of the widely used flood damage estimation tool HAZUS-MH and the county-based Social Vulnerability Index (SOVI) were utilized for the vulnerability assessment. The spatial distribution of agricultural communities vulnerable to flood was evaluated for the extreme and average damage conditions for 365 days along with the monthly average damage from a 100-year flood event. The maximum crop damage and most likely months to experience major flood events were found in the same temporal periods. The spatial distributions of damage and SOVI assessments suggested that the most vulnerable agricultural communities (Highland (VA) and Prince George's (MD)) did not experience high flood damages in any scenario. The agricultural community in Shenandoah County was the most vulnerable in September and October, which has the highest flood probability. This high risk that is spatiotemporally highlighted can aid decision-makers regarding the resource allocation for mitigation efforts in the PRW. Our method can potentially be replicated throughout the country, thus protecting vulnerable agricultural communities. [ABSTRACT FROM AUTHOR]

Describes a study of the economic value of El Nio-Southern Oscillation (ENSO) prediction to United States (US) agriculture. Analysis of data and models from meteorology, plant science and economics under a framework based on Bayesian decision analysis; Estimated annual value of perfect ENSO prediction to US agriculture.