Research & reports

Erik Engel, Karin Fiege, Anja Kühn · · Africa

The UFISAMO project analyzed urban agriculture (UA) in Maputo and Cape Town. In Maputo, UA is the main income source for about 5% of the population, though it often does not cover monthly food costs, and a major challenge is the uncontrolled application of pesticides due to mono-cropping. In Cape Town's townships, UA plays a negligible role in income and food security due to small plots, sandy soils, water stress, and weak market links.

Carme Melo Escrihuela · International Journal of Sustainable Development and Planning · Spain (Valencia)

The evolution in the preservation, management, and planning of l'Horta de València, a historical Mediterranean huerta in Valencia, Spain, was assessed. It is argued that negative changes and impacts in l'Horta are not simply the outcome of global dynamics but result from the region's planning trajectory and landscape management approach. This approach has been shaped by a lack of territorial and supra-municipal perspective and the primacy of culture, identity, and heritage aspects over the landscape's productive dimension.

Héctor Ávila Sánchez · Investigaciones Geográficas Boletín del Instituto de Geografía · Global

This study analyzed the impact and potential of Urban and Peri-urban Agriculture (UPA) on urban food systems, focusing on cities in Western Europe, North America, and Latin America. It concluded that while UPA practices have increased, their presence in urban food systems remains limited, and their consideration in territorial public policies is still marginal. In developed countries, its impact has been primarily therapeutic, landscape-related, and for heritage preservation, while in poorer countries, it has contributed to self-sufficiency for low-income urban populations, public space recovery, social fabric strengthening, and community development.

Stephan Pauleit, Didit Okta Pribadi, Hany Abo El Wafa · DOAJ (DOAJ: Directory of Open Access Journals) · Indonesia (Jakarta)

The continued existence of agriculture in and near urban areas, such as in Jakarta and Addis Ababa, is an important means to strengthen city resilience. However, its importance is still poorly, or at best intermittently, acknowledged by politicians and urban planners, who are inspired by visions of "modern" cities where agriculture is considered a negligible activity.

Jean-Christophe Levassor · DOAJ (DOAJ: Directory of Open Access Journals) · France

This study addresses social divisions in Le Pile, east Roubaix, France, where over 40% of residents live below the poverty line. It states that without proactive policies, social divisions will worsen, and initiatives like urban farming and zero waste will only have a limited effect beyond a small circle of insiders. La Condition Publique aims to recreate ties among various actors to support urban renovation and foster resilience in this deprived neighborhood.

Riska Rahma Arriani, Mardwi Rahdriawan · Teknik PWK (Perencanaan Wilayah Kota) · Indonesia (Jakarta)

A qualitative study using purposive sampling investigated the reasons for decreasing community participation in the government-initiated Urban Farming Program at Rusun Marunda, Jakarta, Indonesia. The program, which started with 50 farmers in 2014, saw participation drop to only 5 farmers by 2019. The study found that obstacles in farming demotivated farmers, leading to a decline in participation, particularly among those with economic-egoism motivations.

Joshua Sbicca · · United States (Colorado)

This study investigated the potential for urban agriculture to drive green gentrification, using Denver, Colorado, as a case study. Urban agriculture was shown to drive gentrification and act as a force for displacement, even when advocates are aware of its exclusionary potential for urban farmers and residents. The research argues that political economy and cultural forces create neighborhood disinvestment and economic marginalization, and urban agriculture contributes to green gentrification through a process of revalorization that exploits rent gaps.

Chiara Certomà, Chiara Tornaghi · Ghent University Academic Bibliography (Ghent University) · Global

This book is a collection of chapters unpacking the forms, functioning, and meanings of urban gardening in the context of the neoliberal transformation of cities. It offers an overview of diverse claims in the micro-politics of garden activism and discusses how these projects are fraught with social solidarities and divisions, empowerment and learning processes, conflicts and negotiations. The collection aims to contribute to a critical discussion of the “politics of urban space” and enrich the emerging debate on radical, critical, and political gardening.

Thomas Earl Tracy · ODU Digital Commons (Old Dominion University) · United States (Virginia)

This study investigated reasons for the low enrollment of African Americans in urban agriculture degree programs in Virginia, which contributes to few African Americans in leadership positions in the urban agriculture industry. Data were collected through surveys and interviews with agriculture students, non-agriculture students, and department chairpersons at Virginia State University and other colleges. The findings indicate a dearth of African Americans enrolled in these programs.

Stephan Barthel, Christian Isendahl, Benjamin N. Vis, Axel Drescher, Daniel Evans, Arjan van Timmeren · The Anthropocene Review · Global

Global urbanization and food production are in direct competition for land. Displacing crop production from urban and peri-urban land due to soil quality issues will demand a substantially larger proportion of the Earth’s terrestrial land surface than the area lost to urban encroachment. This risks triggering distancing effects, unfair social-ecological teleconnections, and amplifying effects within the Earth System, potentially leading to food riots in cities of the Global South. The paper identifies multi-level leverage points, specifically an advisory global policy aligned with regional policies enabling robust common property rights for bottom-up actors in urban and peri-urban agriculture (UPA), to navigate urban expansion away from fertile croplands.

Martin Jayo, Eduardo de Lima Caldas · kult-ur revista interdisciplinària sobre la cultura de la ciutat · Brazil (São Paulo)

A study in São Paulo, Brazil, examined recent forms of appropriation of the urban agriculture agenda, using a historical analysis of urban agriculture practices by Caldas and Jayo (2019). It was observed that traditional urban agriculture discourses have been captured by new actors, including parts of the public sector opportunistically appropriating the theme and the real estate market promoting an imitation of urban agriculture as a marketing tool.

Lemi Gonfa · · Africa

This paper reviewed the role of urban agriculture in socio-economic and environmental sustainability in Africa, drawing on theoretical and empirical literature. While urban agriculture is recognized for job creation, improved diet, and environmental benefits like urban greenery and biodiversity, challenges such as difficult land access, lack of experience, financial support, training, and credit facilities, as well as low land productivity, animal grazing, and theft, were identified. These factors present potential negative externalities and hinder the development of urban agriculture.

Sofia Nikolaidou · Manchester University Press eBooks · Europe

This chapter examines new forms of urban gardening, often involving informal and temporary reuse of vacant land, and their impact on urban green space governance and planning practices. Using examples from Greece and Switzerland, it highlights differences and similarities in practices, social and institutional contexts, and collaborative governance patterns. The study calls attention to the critical role of the temporary nature of these initiatives, which affects new configurations of urban green areas and public space, and related planning practices.

A Noussia · Research Open (London South Bank University) · Brazil

This paper discusses urban agriculture on city peripheries within a scenario of urban expansion, focusing on the Guaratiba neighborhood in Rio de Janeiro. It argues that the city's urban expansion process does not invest in the inclusion of urban agriculture activities within the area's socio-environmental dynamics.

Lucy Rose Wright, Ross Fraser Young · Manchester University Press eBooks · Global

This chapter introduces the concept of political gardening, contextualizing its rise within neoliberal processes and academic interest in urban gardening. It conflates political gardening with injustice, drawing on Rawls' theory of social justice. The chapter uses case study examples to define political gardening as a six-stage iterative process that participants undergo to address injustices and become engaged, democratized citizens.

Joeli Silva de Souza, Ryzia de Cássia Vieira Cardoso, Lídice Almeida Arlego PARAGUASSÚ, Sidione Ferreira dos Santos · Revista de Nutrição · Brazil (Salvador-Bahia)

A cross-sectional exploratory study in Salvador-Bahia characterized community gardens, with five out of seven gardens participating and data collected from 13 horticulturists. 80.0% of gardens lacked land legalization, 100.0% operated without technical support, and 60.0% had no social organization. Major difficulties included lack of funding, volunteers, and water use restrictions, indicating insufficient policies limited technical support and financing.

Tinashe P. Kanosvamhira, Daniel Tevera · South African Geographical Journal · South Africa (Cape Town)

A mixed-methods study in Mitchells Plain, Cape Town, examined the linkages between urban gardeners and supporting actors using questionnaires and in-depth interviews. Findings indicate that the nature and strength of these linkages are critical for urban gardening success. However, there is minimal cooperation among non-state actors in the area.

Marco Picone, Filippo Schilleci · Nova Science Publishers (Nova Science Publishers, Inc.) · Italy

A critical essay examining an urban-garden participatory process underway as part of Palermo, Italy's "Laboratorio Palermo città educativa," launched by the municipality in 2015 to convert abandoned or degraded public green areas into urban gardens for educational activities across all ages, in the name of neighborhood community reappropriation. The paper argues that in a context of austerity urbanism, it is easy for the municipality to exploit the absence of public investment to mobilize active citizens as protagonists of urban change, and that the idea of creating urban community gardens—like other recent slogans such as smart cities and creative cities—tends to become a universally praised, virtuous development model without scrutiny. It further notes that the lack of an effective regulation governing the use of public green spaces in the city continues to create obstacles to the solutions proposed by the thematic working table. The author concludes that field-based qualitative research is still needed to determine whether these reappropriation processes conceal neoliberal dynamics that delegate a false decision-making power to citizens while using them to fill current political vacuums.

Shawna Holmes · Canadian Food Studies / La Revue canadienne des études sur l alimentation · Canada

Interviews with school food environment staff across Canada examined how provincial nutrition regulation changes affected food procurement. While the regulations opened opportunities to improve nutrient content and involve local producers or school gardens, some schools struggled to procure nutritionally compliant food because of higher costs of transporting produce to rural, remote or northern communities and logistical problems such as spoilage. Regulations improved food environments in some schools, but others still require more support.

Baby Shaharoona, Said Al‐Ismaily, Ahmed Al‐Mayahi, Nadhira Al-Harrasi, Ruqaiya Al-Kindi, Abdullah Al-Sulaimi, Hamad Al-Busaidi, Mohammed Al‐Abri · Heliyon · Global

A study in A'Seeb city, Oman, combined a sociological questionnaire survey of residents' perceptions with sampling of pathogenic bacteria, water-soluble metals, basic cations, salinity and texture in soil and groundwater near urban gardens and municipal waste disposal sites. Most surveyed residents were not paying attention to the negative consequences of their activities on soil and the environment. Heavy metal concentrations were significant at some contaminated sites though still below international standards, while fecal contaminants were reported in some garden, waste-site and groundwater samples, identifying human pathogens in risk group 2 including Klebsiella pneumoniae, Shigella spp. and E. coli.

Annelise Caetano Fraga Fernandez, Almir Cezar Baptista Filho · Cidades, comunidades e território/Cidades comunidades e territórios · Brazil

This article describes the obstacles to applying Brazil's family-farming public policy in urban settings. It shows that a set of representations associated with rural agriculture has shaped the classification criteria used by rural technical-assistance (ATER) staff, and that this in practice limits how the policy can be applied in urban areas. It states that the mobilization of social movements linked to urban agriculture, specifically in the municipality of Rio de Janeiro, led to the construction of an initiative, but the available abstract breaks off at that point.

Lucy Rose Wright, Ross Fraser Young · Manchester University Press eBooks · Global

A chapter introducing the concept of political gardening. It begins by situating the re-evaluation of "everyday space" within neoliberal processes of privatization, devolution and entrepreneurialism, then connects the rise of academic interest in urban gardening with the movement's political dimension. Drawing on Rawls' theory of social justice, it conflates political gardening with injustice, uses case studies to unpack that process of addressing injustice across six iterative stages, and arrives at a definition of political gardening as both a term and a process through which participants become "democratized" citizens.

Asnath Alberto Malekela · · Tanzania

In Dar es Salaam, Tanzania, a study of climate change impacts on urban and peri-urban agriculture (UPA) drew on secondary literature plus primary data from structured and in-depth interviews, observations, and focus group discussions with 201 UPA practitioners. 84% of respondents engaged in UPA for food and income, and UPA made a positive contribution to food security. However, UPA was found to be severely affected by climate change: effects included drying of crops (41%), crop pests and diseases (28%), decreased crop yields (13%), loss of soil fertility (8%), animal diseases (43%), drying of pasture lands (41%), and livestock deaths (16%). The study states plainly that urban and peri-urban agriculture in Dar es Salaam is severely affected by climate change, and recommends adopting farming systems such as vertical farming that use limited water resources.

Michael Martin, Elvira Molin · Sustainability · Sweden

This study assessed the environmental impacts of urban vertical hydroponic farming through a life-cycle perspective, applied to a case-study vertical hydroponic farm in Stockholm, Sweden, comparing current performance with potential improvement scenarios. Results showed that growing medium, pots, electricity demand, and transportation of raw materials and product deliveries were the important contributors to environmental impact in this system. Replacing plastic pots with paper pots was found capable of producing large reductions in GHG emissions, acidification impacts, and abiotic resource depletion, and replacing conventional gardening soil with coir as the growing medium also led to large impact reductions. However, the study states that further reducing the system's impacts will require more resource-efficient steps specifically to address impacts from electricity demand, an issue not resolved by the pot and growing-medium substitutions, and identifies potential for more symbiotic exchanges using urban wastes and by-products.

Anne Barbillon, Christine Aubry, Nastaran Manouchehri · HAL (Le Centre pour la Communication Scientifique Directe) · France

This French guide, "R.E.F.U.G.E.," developed by AgroParisTech, sets out a four-step methodology to help urban-planning actors in the Île-de-France region assess and manage soil contamination risk before establishing urban agriculture on available land: a historical and environmental site study, a sampling strategy, interpretation of soil analyses, and, where warranted, a formal health risk assessment. Based on France's national methodology for managing polluted sites and soils, it is intended as a first harmonized technical tool for the field and was slated for a testing phase applying it to future urban agriculture projects. The abstract itself does not report contamination measurements or findings from any specific site; it describes the assessment procedure rather than presenting soil contamination data.