Research & reports

Moses Wanyakha, Nancy Grudens‐Schuck · International Journal of Agriculture Extension and Social Development · United States

This qualitative study reviewed data from 32 counties in Iowa over five years to assess stakeholder participation in Master Gardener community garden donation programs. The analysis found that while these programs engage many stakeholders, the involvement of food pantry patrons in the planning process was low. This low patron involvement limits the programs' ability to effectively serve the community and achieve sustainability and efficacy in providing fresh produce.

Katie Wagner, Kynda R. Curtis, Ruby Ward, Melanie Stock, Sheriden M. Hansen · Applied Economics Teaching Resources · United States

This article describes the Utah Urban and Small Farms Conference (USFC), an annual outreach event for new and existing small and urban agricultural producers in Utah and across the United States facing urbanization and environmental challenges. It reports that themed sessions led by producers, government personnel, and Extension faculty led to information adoption, community partnerships, and effects on participants' professional careers and involvement in urban agriculture governance. The article suggests the USFC model could be adapted by other organizations and communities facing similar challenges.

Fernanda Tomiello, Sidney Gonçalves Vieira · Ciência Geográfica · Brazil

A Brazilian paper draws on Henri Lefebvre's ideas about the use and appropriation of space to examine the tension between domination, embodied in private property, and appropriation oriented toward collective, just use. Arguing for overcoming constraints that limit the appropriation of space and prioritizing human needs over market logic, the study analyzes the deterioration of green areas in Pelotas, Rio Grande do Sul, Brazil, finding that the city's Green Area Index (IAV) falls below the recommended level, and proposes practices such as urban agriculture as alternatives that challenge capitalist logic and promote the appropriation of space as a right for all.

Diana Rubí Oropeza Tosca, Roger Notario-Priego, Dalia Alejandra Candelario-Morales, Ezequiel Notario-Priego, José Eliseo · Revista de Gestão Social e Ambiental · Mexico

A study in a rural community in Southeastern Mexico designed a management model for the administration and sustainability of a community garden, focusing on strengthening local capacities, ensuring equitable resource distribution, and promoting food security and environmental sustainability. Drawing on frameworks of social and solidarity economy, food security, sustainable development, and agroecology, and gathering data through focus groups, field visits, and semi-structured interviews with community members and stakeholders in a mixed-methods, participatory design, the study found the community committed to adopting sustainable practices, identified challenges such as resource limitations and climatic risks, and proposed agroecological practices and capacity-building as potential solutions. The resulting management model emphasizes collaborative governance and continuous monitoring.

Samuel Oliveira Cunha, Diógenes José Gusmão Coutinho · Revista fisio&terapia. · Brazil

A qualitative, exploratory study of environmental education in Mato Grosso, Brazil combined literature review, document analysis and study of practices in municipal and state schools. Practices such as school gardens, recycling workshops, selective waste collection and digital tools were found effective for instilling socio-environmental values when integrated into the curriculum with community participation. The study also reports that insufficient teacher training, infrastructure limitations and project discontinuity still undermine the effectiveness of these actions.

Kelsey Ryan-Simkins · Local Environment · United States (Ohio)

This study used multilevel negative binomial regression to examine the relationship between urban agriculture site locations and sociodemographic and neighbourhood environmental characteristics at the census tract level in Ohio, USA. Findings challenge the idea that urban agriculture is placed in areas with low food access, raising questions about the food-access rhetoric used to promote urban agriculture, a movement critiqued for often being led by upper-class, urban elites, and contribute to debates about the roles of race and gentrification in urban agriculture.

Beth Haney · The Nurse Practitioner · United States

A policy-advocacy article by a US nurse practitioner (NP) arguing that NPs, positioned at the intersection of healthcare and community well-being, can lead food-system reform to expand access to healthy food and reduce pesticide and herbicide use. Citing CDC data that over 40% of American adults have obesity and that diet-related disease is among the leading causes of preventable death, the article lists policy goals including expanding SNAP and WIC to add incentives for fresh-produce purchases, supporting farming communities producing quality, pathogen-free, organic food, and backing urban agriculture, farmers' markets and farm-to-school programs.

Danya Carroll, Lynn Mad Plume, Nicole Redvers · Journal of Agriculture Food Systems and Community Development · United States

This scoping review maps the existing literature on food access in American Indian and Alaska Native (AI/AN) communities in the United States onto the Social Ecological Model (SEM). A systematic search of PubMed, CINAHL, SocIndex, Academic Search Premier, ERIC and Google Scholar covered publications from 1988 to 2023, followed by deductive content analysis through the SEM lens using qualitative software; 14 articles met the inclusion criteria. Interventions most frequently targeted the "intrapersonal" and "community" SEM levels, while the "institutional" and "public policy" levels were least targeted, with intervention formats including support for community and school gardens, seed provision, traditional foods at school, family and community events, and meal provision. The review found that valuable research has been conducted on AI/AN food access interventions, many spanning multiple SEM levels, and it points to the importance of leveraging strengths such as culturally aligned programs and traditional foods, calling for further collaboration between AI/AN communities and researchers to develop more informed, multi-level interventions.

William D. Schanbacher, Joe Bohn, Erica Hall · Journal of Agriculture Food Systems and Community Development · United States

A reflective essay (2025) recounts a pilot, public-facing virtual course, "Introduction to Food Policy," delivered in summer 2022 by the University of South Florida Food Sovereignty Initiative and the Florida Food Policy Council, building on prior Florida work in urban agriculture, agroecology, and food sovereignty. Over six weeks, the course featured weekly presentations from food-system specialists on: understanding food policy, researching food policy, environmental food policy, food policy advocacy, civic engagement in food policy formulation, and regional food policy, and was open to students, community members, and policymakers. The authors, drawn from Florida Food Policy Council leadership and Food Sovereignty Initiative faculty, share observations on developing and delivering the course along with participant comments from a post-course survey and an outside evaluation by the North American Food Systems Network.

Fabio Henrique Albuquerque de Jesus · Revista Americana de Empreendedorismo e Inovação · Brazil

A theoretical essay on hunger in Brazil (2025) applies the Public Policy Cycle Model to the persistent, structural problem of hunger in Brazilian politics, noting that hunger is not unique to Brazil — about two billion people worldwide experience moderate or severe food insecurity — while all Brazilian regions show nutritional deficits tied to inadequate or insufficient food intake. In this context, it frames urban and peri-urban agriculture (AUP) as a social and public-policy tool for promoting food and nutrition security, examining the agenda-setting and formulation stages of AUP policy through discussions from Brazil's National Conferences on Food and Nutrition Security. Noting the 2024 establishment of Brazil's National Urban and Peri-urban Agriculture Policy and its ties to the UN Sustainable Development Goals, the essay concludes that much remains to be done to strengthen AUP as public policy and consolidate its social, economic, and environmental impact, particularly to make it effective for promoting food and nutrition security.

Yago Evangelista Tavares de Souza, Heloísa Soares de Moura Costa · Coleção Estudos Cariocas · Brazil

This article examines the evolution of urban-planning policy regarding nature and urban agriculture, from federal legislative texts to Rio de Janeiro's municipal master plans, analyzing documents including the 1976 draft Urban Development Law and the 1979 Federal Land Subdivision Law No. 6766. It traces decades of changes and revisions to show how legislation and public policy shaped the urban environment in relation to nature and agriculture, and it discusses the challenges small farmers face amid urbanization along with environmental approaches within the master plans.

Anderson Luis Ferreira · Revista fisio&terapia. · Brazil

A qualitative, exploratory-descriptive study based on bibliographic and documentary review examines urban agriculture as a socio-environmental alternative to the contradictions of the Green Revolution. Drawing on classic and contemporary national and international literature and reports from multilateral bodies such as the FAO and UN-Habitat, it characterizes the Green Revolution as having raised agricultural productivity while deepening social inequality, homogenizing crops, and causing serious environmental impacts. It positions urban agriculture as valuing production diversity, strengthening community autonomy, and fostering new forms of sociability, concluding that examples across different contexts converge in strengthening food sovereignty, social inclusion, and urban sustainability.

US Environmental Protection Agency (EPA) · US Environmental Protection Agency (EPA) · United States

An EPA summary of its 2024 survey of anaerobic digestion facilities processing food waste in the U.S., covering 313 identified facilities with 65 operating facilities responding (24% response rate). Excluding beverage-industry waste, processed tonnage rose from about 1.36 million tons in 2022 to about 1.43 million tons in 2023.

Jacob Wallace · Waste Dive · United States

NYC's Department of Sanitation began enforcing mandatory curbside organics separation on April 1, 2025, issuing nearly 2,000 summonses in the first week, but Mayor Adams paused broad enforcement through 2025 on April 18, limiting fines to persistent violators. The city had distributed about 190,000 free bins and sold 63,000 more, and organics diversion had risen 65% from FY2022 to FY2024.

US Environmental Protection Agency · U.S. Environmental Protection Agency (EPA) · United States

The Resource Conservation and Recovery Act (RCRA) was passed on October 21, 1976, amending the 1965 Solid Waste Disposal Act, and established three programs: solid waste (Subtitle D, landfill criteria), hazardous waste (Subtitle C, cradle-to-grave management), and underground storage tanks (Subtitle I).

US Environmental Protection Agency · U.S. Environmental Protection Agency (EPA) · United States

U.S. municipal solid waste (MSW) generation reached 292.4 million tons in 2018. The landfilling rate fell from 94 percent in 1960 to 50 percent in 2018, while the combined recycling and composting rate rose from just over 6 percent in 1960 to 32.1 percent in 2018, including 25 million tons composted and 69 million tons recycled.

U.S. Environmental Protection Agency · US EPA Landfill Methane Outreach Program (LMOP) · United States

According to US EPA's LMOP page, landfill gas is roughly 50% methane and 50% CO2, and methane is at least 28 times more effective than CO2 at trapping heat over 100 years. Municipal solid waste landfills are the third-largest source of human-related methane emissions in the US, accounting for about 14.4%. There are 542 operational LFG energy projects nationwide, about 63% generating electricity and about 20% producing renewable natural gas.

USDA National Agricultural Statistics Service (NASS) · USDA National Agricultural Statistics Service · United States

USDA NASS's 2025 survey found the average value of U.S. cropland was $5,830 per acre, up 4.7% from 2024 and up 96% since 2011. Pastureland averaged $1,920 per acre, up $90 from 2024 and 79% since 2011. Overall farm real estate value averaged $4,350 per acre, up $180 from 2024. The average cropland cash rent was $161 per acre nationally (up $1), with irrigated cropland at $244 and non-irrigated at $147; pastureland rent was unchanged at $15.50 per acre.

U.S. Environmental Protection Agency · U.S. Environmental Protection Agency (EPA) · United States

This EPA page (last updated December 22, 2025) explains chromated copper arsenate (CCA), a wood preservative used since the 1940s for utility poles, posts, and other structural lumber. Manufacturers voluntarily ended CCA use for residential wood products in December 2003. EPA notes cancer and non-cancer health risks for workers and environmental risks to aquatic invertebrates and plants, while stating there is no health risk to the general public; removal of existing CCA structures is not mandated, though periodic sealant coating is recommended to reduce leaching.

Agência Senado · Agência Senado (Senado Federal) · Brazil

An Agência Senado article reporting that Law 15,226/2025, sanctioned September 30, 2025 and published October 1, 2025, raised the minimum share of school-meal food purchases that must come directly from family farming from 30% to at least 45%. Priority buyers include agrarian-reform settlements, Indigenous and quilombola communities, and formal/informal women's groups; the law also requires purchased food (except family-farming products) to have at least half its shelf life remaining. It originated from PL 2.205/2022 by deputy Luizianne Lins (PT-CE) and was reported in the Senate by Daniella Ribeiro (PP-PB).

Amato-Lourenço L.F., Franca G.C., Seckler M.M., Mauad T. · Environmental Challenges, 14:100864 · Brazil

An analysis of a resident-led, decentralized community composting initiative begun in 2018 in São Paulo, using thermophilic decomposition (the UFSC method) in public squares. It presents a civil-society-driven waste-management model with positive environmental and social outcomes.

Raychel E. Santo, Sara N. Lupolt, Katherine M. Uhde, Robert C. Bennaton, Keeve E. Nachman · Elem Sci Anth · United States

This scoping review compares land access mechanisms for urban agriculture across the 40 most populous US cities. It finds 75% of cities used at least one mechanism but only 20% offered multiple options; temporary-use mechanisms (e.g., Adopt-A-Lot programs, city-run farms and gardens) were more common than secure-tenure options like long-term leases and land trusts; 45% of cities designed mechanisms with an equity focus; and fewer than a quarter offered complementary support such as subsidized water, liability insurance, soil testing, or funding.

Kristin Reynolds, Cédric Gottfried, Tamarra Thomas · Journal of Agriculture, Food Systems, and Community Development · United States

This policy brief reports findings from a study examining, through a racial-equity lens, the rollout of the USDA Office of Urban Agriculture and Innovative Production established by the 2018 farm bill. Drawing on national surveys, interviews in New York City and Atlanta, GIS mapping, and policy review, it situates the provisions within the USDA's history of discrimination and offers policy recommendations for engaging socially disadvantaged urban farmers.

Kristin Jones · Enquiry The ARCC Journal for Architectural Research · United States (Chicago)

Taking Alfred Caldwell's mid-century vision of small-scale farming as social empowerment as its starting point, this study examines three distinct urban farming approaches in Chicago—spanning raised-bed farming, aquaponics, hydroponics, and permaculture across a nonprofit, a community group, and a private entrepreneur—to assess their scalability and broader societal and environmental impact. It identifies numerous opportunities for scaling up and concludes that a multi-faceted, multi-scalar framework is needed to grow urban agriculture within resilient cities.

Hagan Capnerhurst, Hannah Quigley, Jake Hawes · Journal of Agriculture, Food Systems, and Community Development · United States

This policy brief examines the challenges facing urban agriculture in U.S. cities—scant funding, insecure land tenure, and environmental pollution—and profiles the USDA's emerging Office of Urban Agriculture and Innovative Production as a support apparatus. It calls for consistent, permanent federal funding outside the annual budget process to enable tailored technical assistance, reformed grant initiatives, and expanded data collection.