Research & reports

Elvis Albert Robe Wandscheer, Rosa Maria Vieira Medeiros · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil

This study investigated the interrelations between urban agriculture and local institutions in Belém-PA and Porto Alegre-RS, Brazil. In both municipalities, actions were observed that were implemented temporarily but lacked continuity. Porto Alegre showed more commercial channels derived from previously established institutional relations, while Belém presented several elements without alternative solutions for problems related to high temperatures and navigation distances.

Denise Arroyo-Lambaer, Luís Zambrano, Miguel Rivas, Diana Laura Vázquez-Mendoza, Fernanda Figueroa, Martha B. Puente-Uribe, Ana Cecilia Espinosa‐García, Marco A. Tapia-Palacios, Marisa Mazari-Hiríart, Daniel A. Revollo-Fernández, Alaíde Jiménez-Serna, Marco Covarrubias, Carlos Sumano · Frontiers in Sustainable Cities · Mexico (Mexico City)

This study investigated the needs and commercialization challenges of chinampa producers in Xochimilco, Mexico City, to assess the potential of a green label. The analysis, based on a literature review and producers' mental model analysis, found that unresolved issues like commercialization problems, consumers' unwillingness to pay fair prices, soil degradation, and poor irrigation water quality persist. These issues make it difficult for most producers to bear certification costs, indicating that implementing a green label would likely fail to deliver its intended benefits.

Arnim Wiek, Stefanie Albrecht · Urban Agriculture & Regional Food Systems · United States (Phoenix)

A multiyear transdisciplinary project in Phoenix, United States, analyzed the development of a sustainable urban food forest enterprise. The project built a coalition of supporters, secured a suitable site, codeveloped a vision and action plan, and fundraised a major start-up donation. However, research findings indicate that despite achieving success factors to some extent, an underdeveloped sustainable entrepreneurial ecosystem jeopardizes long-term success and multiplication efforts.

Gordon Prain, Dávid Simon, Jess Halliday, Pay Drechsel · Frontiers in Sustainable Food Systems · Global South

Urban and peri-urban agriculture (UPA) in the Global South faces challenges such as limited recognition, land conversion, and water pollution, which threaten its potential for urban resilience. Innovations in urban governance are required to integrate food systems into urban planning through food mapping and multisectoral platforms.

Kinanti Safirtri, Oekan S. Abdoellah, Budhi Gunawan, Yusep Suparman, Parikesit Parikesit · The Qualitative Report · Indonesia

A qualitative study with 27 export-scale urban farmers in Bandung Metropolitan investigated market pressures to meet international food standards. While intended to encourage environmentally friendly practices, farmers interpreted the implementation of international food standards as an administrative formality for export requirements, rather than a critical reflection on environmental problems from intensive agricultural practices. Consequently, market pressure from international food standards was found to be paradoxical and ineffective in fostering farmers' environmental responsibility.

Abdelkarim Hamrita, Daniel Ferrer Jiménez, Hichem Rejeb · Frontiers in Sustainable Cities · Africa

A 2022 study analyzed the peri-urban agrifood system of the Sousse urban agglomeration, one of the most important in Tunisia, from a landscape perspective. It finds that clearly deficient regulations combined with uncontrolled urban development, together with intersecting political, environmental and economic factors, are threatening the survival of a traditional, largely family-based agricultural model built on mixed or polyculture production with predominant olive groves — a model the study describes as vital to the economic maintenance of many families and to food security. Using the Landscape Character Assessment methodology, the study proposes a landscape-project tool to strengthen the resilience and sustainability of peri-urban agriculture and prevent the loss of landscape heritage. It also points to the importance of integrating green infrastructure into land-use planning and to the need to promote Agricultural Parks, a protected status already recognized in Spain and other countries, putting forward specific proposals for the Sousse peri-urban agricultural landscape while insisting on the need to reform current forms of governance.

Sandra Schwindenhammer, Denise Gonglach · Politics and Governance · Germany

This qualitative and participatory case study in Germany examined the governance implications of an emerging technology in urban agriculture that connects wastewater treatment and agricultural production for urban hydroponics. The analysis found that while this technology has the potential to facilitate SDG implementation, it simultaneously creates new sector interlinkages between water and food, leading to policy demands that necessitate more integrated policymaking.

Meredith Gaglio · · United States

The "Ecotopia" concept, promoting ecologically and socially responsible American Appropriate Technology (AT), included innovative urban planning like rooftop gardens. However, the expansion and contraction of the intranational Ecotopian network built by former Rainmakers in the mid-to-late 1970s revealed a crisis of purpose within RAIN and signaled a crisis within the AT Movement itself.

Benjamin Selwyn · The Journal of Peasant Studies · Global

This article argues that a Green New Deal (GND) for agriculture must actively combat environmental degradation, social inequality, and labor exploitation, rather than merely aiming to restart capitalist economies. It identifies key areas for discussion and political action, including the reorientation of state subsidies, workers' rights, agrarian reform, the decommodification of food, agroecology, urban agriculture, new technologies, and rewilding.

Boglarka Z. Gulyas, Jill L. Edmondson · Sustainability · Global North

A systematic review of literature on urban agriculture (UA) in the Global North identified factors determining its success in enhancing city resilience and challenges limiting it. UA's success in increasing city resilience was defined as dependent on five factors: institutional and public support, a sufficient knowledge base, communication and collaboration among actors, and resourcefulness in efficient space and resource use. However, comprehensive assessments of UA's potential are still lacking, suggesting challenges in its effective implementation.

Sarah E. Coffey, John F. Munsell, Rico Hübner, Curtis R. Friedel · Urban Agriculture & Regional Food Systems · United States (Virginia)

A survey of 68 mayors (39% response rate) in Virginia, US, from communities under 25,000 population, investigated public food forest initiatives. Mayors identified long-term maintenance as the greatest barrier and noted that 78% of municipalities lack land use codes for food-producing trees and shrubs. While nearly 70% reported some public land food production, only one-fifth included food-producing trees. Mayors emphasized sociocultural programs and education over food access as the most compelling aspect.

Dion Notario, Ferdian Suprata, Meda Canti, Listya Utami Karmawan · MITRA Jurnal Pemberdayaan Masyarakat · Indonesia (Jakarta)

A community empowerment program focusing on clean water management, compost making, and urban farming was implemented in Muara Baru flats, Jakarta. A majority of residents responded positively to the program and expressed willingness to actively participate. However, several obstacles hindering the program's success were identified, including a lack of commitment from the local community, climate change, water availability, and arable land availability.

Pastory Salvatory Thomas, Wilbard Kombe, Aldo Lupala · Urban and Regional Planning · Tanzania

This qualitative study examined perceptions of urban agriculture among 60 urban farmers and officials in Arusha City, Tanzania, through interviews, observation, and literature review. Findings revealed that negative effects of urban agricultural activities influenced negative perceptions, which city officials seldom managed. While urban agriculture is acknowledged in policy, the critical effects of negative perceptions among stakeholders are considered less crucial in policy implications and formal governmental proclamations, despite their real-world impact.

Paola Clerino, Agnès Fargue‐Lelièvre · Sustainability · France

This study used a participatory approach with French urban agriculture stakeholders to identify sustainability objectives and 21 criteria for professional intra-urban farms. Six objectives were established, and agro-environmental and socio-territorial criteria were deemed more important than economic ones, with food production not being mentioned. A critical finding was that decision-makers focused more on projects' external sustainability and urban farmers' agricultural background, suggesting a reliance on farmers for internal sustainability rather than direct assessment.

John Taylor · Frontiers in Sustainable Food Systems · United States (Rhode Island)

This long-term replicated trial in Rhode Island evaluated the yield performance and soil quality impacts of four small-scale food production systems over three summer growing seasons. While total marketable food yields (2.22 to 2.96 kg m-2) were modest compared to biointensive agriculture (4.64 kg m-2), individual crop yields often exceeded regional and national averages without soil quality loss. The study addresses a lack of experimental research on urban agriculture and provides a framework for normative research, offering more reliable yield estimates for modeling urban production potential.

Chloé Nicolas-Artero · Revista INVI · Chile

This article analyzes the role of water user organizations in the construction of water scarcity within the Chilean ideological and legal water context. The existence of urban gardens in the north of the country is notable in this context, which is oriented towards water use efficiency.

Pierre Jassogne · · Belgium

SAULE (Urban Agriculture Housing Ecosystem Symbiosis) was a co-creation project conducted in Brussels, Belgium, from 2017 to 2020, involving citizens, urban agriculture professionals, researchers, social information specialists, and urban planners. Focused on the Ferme du Chant des Cailles urban agriculture site and the Archiducs – Logis-Floreal neighborhood, the project was initiated due to construction threats to the site. The research aimed to reflect on the challenge of combining ecological transition and social cohesion at the Brussels regional level.

Dona Pickard · Sociological Problems Journal · Bulgaria (Sofia)

This article analyzes the attitudes toward urban agriculture as an instrument for sustainable urban policies among local authorities, practitioners, and civil groups in Sofia, Bulgaria. Based on data from the research project "Urban agriculture as a strategy for improving the quality of life of urban communities" (2016–2020), the analysis reveals existing deficits in communication and information exchange between these actors. Factors for these deficits and ways to overcome them are also outlined.

Zeinab Abd Elkader, Ahmed Haroun · Fayoum University Journal of Engineering · Egypt

The legislative and executive challenges of roof gardens in new cities in Egypt were clarified. Theoretical studies, including an applied study in Sheikh Zayed City, were presented. The research suggests that while roof gardens offer environmental, social, and economic benefits, challenges exist for their widespread application.

Lexi Earl, Pat Thomson · · Global

This chapter considers the challenges faced by school gardens. School gardens often have tenuous links with subjects other than health, nutrition, geography, or science, and practical challenges exist in their establishment and maintenance. Key issues of teacher learning, management of resources, and school identity and ethos are also highlighted regarding school change. The chapter concludes with unanswered questions about the prospects for school gardening, particularly whether and how school gardens might be part of an educational solution to the questions posed by the pandemic and climate collapse.

Maximilian Manderscheid, Valentin Fiala, Bernhard Freyer · Zenodo (CERN European Organization for Nuclear Research) · Global

This report D4.3 describes the status quo analysis and documentation of Edible City Solutions (ECS). Over 300 ECS were identified in Berlin and Montevideo, and online research was conducted in Carthage and Lomé, after which a total of 84 ECS were documented in detail using a mixed-method approach (online survey, interviews, workshops, etc.). Most documented ECS take the form of urban gardening and focus on social benefits like providing education and fostering social cohesion, but the report does not detail specific challenges or limitations regarding governance.

Mysha Clarke, Melissa Davidson, Monika Egerer, Elsa C. Anderson, Nakisha Fouch · People Place and Policy Online · United States

This paper argues that community gardens should be a prioritized element of green infrastructure to improve cities' adaptation to climate change. Community gardens can reduce urban heat islands, provide ecosystem services, and increase stormwater retention. However, a qualitative analysis of 18 policy documents for Baltimore, Chicago, and New York City, U.S.A., found that green infrastructure for climate change adaptation prioritizes rain gardens, bioswales, and green roofs, but seldom acknowledges the role of community gardens.

Maurice Dasylva, Ngor Ndour, Bienvenu Sambou, Sara Danielle Dieng · European Scientific Journal ESJ · Senegal (Ziguinchor)

In Ziguinchor, Senegal, the peri-urban rice farming system contributes to food security but is ignored by decision-makers and suffers from urbanization and physicochemical changes in rice field soils. An agronomic diagnosis, based on 180 yield squares (1/4m side) installed in 4 peri-urban valleys, showed average yields of 4.79 ± 0.35 t.ha-1. However, urbanization, silting, acidification, and progressive salinization of soils are the main limiting factors for this production system.

Lindsay K. Campbell, Erika S. Svendsen, Renae Reynolds, Victoria Marshall · Social & Cultural Geography · United States (Rockaway, NY)

This study used Actor Network Theory to explore the material and social dynamics of a coastal community garden on public housing grounds in Rockaway, NY, after Hurricane Sandy. Three assemblages with different governance arrangements—tidal shore, garden plots, and treed lawn—were identified. However, "unruly" actors and actants, including people, saltwater, poison ivy, dogs, and trash, were found to spark controversy and resist governing.

Nicolette Tamara Jonkman, Boris Jansen · Current Opinion in Environmental Sustainability · Sub-Saharan Africa

This literature review on urban agriculture (UA) in Sub-Saharan Africa (SSA) identifies a significant constraint: conflicting stakeholder perceptions of UA, which hinders its development into a sustainable business. Some view UA as illegal and unsustainable, while others see it as a means to food security and employment. The review highlights a knowledge gap regarding land-use history and its effect on UA soil composition and nutrient status, proposing that UA sustainability requires understanding this historical context to build inclusive business models.