Research & reports

Małgorzata Ćwieląg‐Drabek, Agata Piekut, Klaudia Gut, Mateusz Grabowski · Scientific Reports · Europe

A study of family allotment gardens (FAGs) in Silesia Province, one of the most polluted regions in Poland, analyzed 219 soil samples and 64 edible plant samples to link the geochemical disturbance caused by past mining and smelting activity to consumer exposure to toxic and carcinogenic metallic trace elements. Contents of these elements in topsoil were spatially diverse and depended primarily on the location of industrial pollution sources. Average cadmium (0.52 mg/kg fresh weight) and lead (0.57 mg/kg fresh weight) content in vegetables exceeded maximum permissible concentrations under European quality standards. A human health risk assessment based on three dietary exposure scenarios found that, in every scenario, potatoes — a staple of the Polish diet — carried the highest average daily dose for all three elements. The study concludes that consuming vegetables grown in Silesia Province's family allotment gardens may pose a significant health risk to consumers.

Salsabila Nur A, Ir. Irham, S.P. Anung Pranyoto · · Indonesia

This descriptive study, using purposively sampled primary data from 30 farmers in Danurejan sub-district and 25 farmers in Jetis sub-district, Yogyakarta City, Indonesia, examines the contribution of urban farming income to household income through farm income analysis, a one-sample t-test, household income analysis, and multiple linear regression. Urban farming produced a positive annual income (Rp 112,883/year), but its contribution to total household income (Rp 46,579,988/year) was only 0.24%. This low share was attributed to the very small quantity of crops cultivated per household — for example, 4 polybags/year of bird's-eye chili, 10 polybags/year of large chili, and 11 polybags/year of mustard greens. Farmer age, education level, quantity of crops grown, and seedling price were the factors significantly affecting urban farming income.

Dorothée Boccanfuso, Marie-Ève Yergeau · Cahiers de recherche · Africa

This study presents a diagnostic assessment of the urban and peri-urban agriculture (AUP) sector in Mali, based on a literature review and individual interviews with stakeholders in Bamako, forming the first stage of a research project intended to measure AUP's impact on poverty and food security. The literature review found that few studies measure AUP's impact, that existing results are mixed and inconsistent, and that there is a lack of solid evidence on the topic. The Bamako interviews surfaced the sector's economic, social, and environmental issues in the Malian context and confirmed, from key stakeholders, the relevance and necessity of the planned research project.

Kyle Richardville · Purdue e-Pubs (Purdue University System) · United States

With Purdue University's campus and much of its surrounding area classified by the USDA as a food desert, this study surveyed graduate students using a voluntary 33-question online Qualtrics survey distributed campus-wide, to identify barriers to purchasing and consuming fresh produce and to participating in local urban agriculture, and to assess how the COVID-19 pandemic affected food access and motivation for healthy eating and community garden engagement. Results show many Purdue graduate students face both individual and structural barriers to accessing fresh fruits and vegetables, with international students particularly vulnerable to structural barriers; lack of access to a personal vehicle was the primary predictor of vulnerability, especially during the pandemic. Students expressed interest in participating in local urban agriculture initiatives but most were unaware such initiatives existed. A second objective of the study tested whether leaf mold compost could improve degraded urban soils.

Samantha Senda-Cook · Argumentation and Advocacy · United States

Gifford Park, a neighborhood in Omaha, Nebraska, United States, has been recreating itself through urban agriculture like many neighborhoods across the country. This case study conceptualizes urban agriculture as a "place ballet" — describing interactions between places and bodies — extending the idea that places can function as spatial arguments. The analysis found that urban agriculture reveals a complex material argument about the positive impacts places and bodies can have on communities and their members, while simultaneously overlooking the economic and racial privileges inherent in these efforts, and concludes that the place-ballet concept itself carries its own implications of economic and racial privilege.

Agustina Cavalanti · El Barrio Pueyrredón · Argentina

An article reporting that urban gardeners in the Autonomous City of Buenos Aires warn a newly passed urban agriculture law 'conceals the possibility of using public land for private profit.' It states the bill was passed by the ruling majority without room for debate, and criticizes Article 8, which lets any natural or legal person, public or private, apply for permits to develop gardens. A citizen group, 'El Reciclador,' had proposed an alternative emphasizing state or nonprofit management and an educational focus, which was not adopted. Gardeners in the Villa Pueyrredón neighborhood distributed 200 seedlings in protest.

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.

Barbara Maćkiewicz, Raúl Puente Asuero, Antonio Garrido Almonacid · Quaestiones Geographicae · Spain

This study investigated how urban allotment gardens in Baeza, Andalusia, Spain, affect the city’s sustainable development. The research showed that allotment gardens in Baeza endorsed all three pillars of sustainable city development: ecological, economic, and social. However, it was found that developing broader community relations on the city scale, reviving the declining local grocery market, and disseminating environmental initiatives that allotment gardens could promote and facilitate were missing.

Pernille Malberg Dyg, Søren Christensen, Corissa Jade Peterson · Health Promotion International · Global

A thematic review of 51 articles published between 1980 and 2017 examined the effects of community gardens on wellbeing among vulnerable populations. Findings suggested positive impacts on physical health and individual/social wellbeing, but food security enhancements were inconsistent. Two articles raised potential food safety concerns in urban community gardens, recommending attention to minimizing these risks.

Jha Ritesh Kumar, Bhattarai Natasha, KC Suraj, Shrestha Arjun Kumar, Kadariya Manahar · Malaysian Journal of Sustainable Agricultural · Nepal

This research inspected existing practices and obstacles in rooftop farming in Nagdhungha and Birauta, Nepal. Two practitioners were interviewed and 60 non-practitioners were surveyed. Results show that rooftop farming can benefit the environment by reducing atmospheric carbon and assist urban areas by reducing stormwater management costs, with a high willingness to practice rooftop farming among urban dwellers.

Michael Carolan · Journal of the American Planning Association · United States

This 2019 study, based on 82 interviews in Denver, New York, and San Francisco, investigated how traditional and digital urban agriculture converge and diverge regarding land use and gentrification. It found that both digital and traditional urban farming systems are linked to gentrification and inequitable land use patterns. Digital urban farming systems also operate in a regulatory gray area, with their "digital" aspects used to gain more zoning permission than traditional urban agriculture.

Martin Stuchtey, Tilmann Vahle · OpenEdition (OpenEdition) · Global

This paper discusses different types of urban agriculture (UA) to assess its potential for future food production. Conventional open-air farming is found to be rarely commercially viable for meaningful food production, though it offers community, educational, psychological, and environmental benefits. High-yielding Controlled Environment Farming (CEF), while potentially contributing substantially to food output, is highly capital and knowledge-intensive and likely to develop at city fringes due to economic considerations.

Annisa Nur Ichniarsyah, Heny Agustin, Maulidian Maulidian · Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal · Indonesia (Bekasi)

The Asofa Foundation conducted hydroponic training for the community in Bekasi, Indonesia, covering seeding, transplanting, and mixing hydroponic fertilizers. Participants learned to cultivate plants using hydroponics, but seedlings died after transplanting due to poor local water conditions. The study suggests further training in fruit hydroponics or other cultivation methods suitable for the environmental conditions.

Leelanayagi Ramalingam, Juwaidah Sharifuddin, Zainal Abidin Mohamed, Fazlin Ali · International Social Science Journal · Malaysia (Klang Valley)

This study analyzed data from 375 volunteers in Community-based Urban Agriculture Programmes in Klang Valley, Malaysia, to determine the relationship between motivation and satisfaction. It found that volunteer satisfaction was primarily influenced by external factors like campaigns, support groups, extension departments, community, and government policy, followed by love of farming, social referents, and values. The program faces problems in attracting and retaining enough volunteers, indicating a governance challenge for sustainability.

Sarah E. Cramer, Anna Ball · Journal of Agricultural Education · United States

This qualitative case study in the United States examined a school garden program transitioning from non-profit to public school district control, conceptualizing this as a shift from a non-formal to a formal education paradigm. The research explored tensions between constructivist, non-formal educational philosophies and standardized, formal education within school garden settings. The findings indicate challenges in integrating non-formal learning into formal public education structures, arguing for broader legitimation of garden-based learning in curriculum.

Giszell Dymond Weather · Carolina Digital Repository (University of North Carolina at Chapel Hill) · United States

A 7-month study of the Angier Avenue Neighborhood Farm in East Durham, a predominantly Black area, found that Black residents rarely participate in farm activities. This research, based on participant observation, interviews, and food systems research, theorizes the relationship between urban farming and gentrification, arguing that equitable community food projects must incorporate local Black residents' cultures and histories to be sustainable.

오익근, 서정아, 장승옥 · 한국지역개발학회지 · South Korea

A focus group interview with young urban farmers in Daegu, South Korea, explored job creation through urban farming. Participants perceived farming as physically demanding and unrewarding, despite seeing urban farming as a promising industry for job creation. They also noted a lack of national support policies and difficulties in participation. A contradiction was identified between the young farmers' desire to adopt labor-saving new technologies and the goal of creating jobs through traditional farming.

Arantza Elena Sanchez Gutierrez · · Mexico

In Querétaro Municipality, Mexico, a strategy was designed and implemented to increase and incentivize the use of urban agriculture. Previous strategies implemented in Mexico had resulted in low participation and abandonment of practice due due to low interest from inhabitants and a lack of will to follow through on plans. This qualitative research analyzed the causes of these failures using User-Centered Design tools and Design Thinking. Findings showed that a "strategy of appropriation," emphasizing a sense of belonging, well-being, and commitment, resulted in an increase in this variable, which influences the abandonment of agricultural practices.

Anna Paltseva, Zhongqi Cheng · RUDN Journal of Agronomy and Animal Industries · United States (New York City)

Elevated trace metal concentrations, particularly lead (Pb), are prevalent in New York City urban soils. This study analyzed the spatial distribution of lead in NYC gardens and assessed pollution levels and ecological risks. Findings indicated that lead posed moderate to significantly high ecological risk, and the majority of NYC garden soils were characterized as polluted.

Simon Tresch, David Frey, Renée‐Claire Le Bayon, Paul Mäder, Bernhard Stehle, Andreas Fließbach, Marco Moretti · Scientific Reports · Switzerland (Zurich)

A study in 85 urban gardens across Zurich, Switzerland, investigated the impact of gardening on five soil functions and the relationship between plant (600 spp.) and soil fauna (18 earthworm spp., 39 springtail spp.). High plant diversity positively affected soil fauna and multifunctionality, but intense garden management decreased plant diversity. This indicates a trade-off where intensive gardening, while potentially beneficial for some aspects, can negatively impact overall plant diversity.

Miguel Izquierdo‐Díaz, Peter E. Holm, Fernando Barrio‐Parra, Eduardo De Miguel, Jonas Duus Stevens Lekfeldt, Jakob Magid · Journal of Environmental Quality · Global

This study evaluated air pollution in urban green areas using edible plants. Analysis of 36 unwashed leaf samples showed that plants exposed next to roads had higher contents of traffic-related elements, and outdoor samples were enriched in marine aerosol ions. Cadmium and lead concentrations did not exceed European legal maximum levels for vegetables, indicating their consumption would be safe.

Chiara Certomà, Martin Sondermann, Susan Noori · Manchester University Press eBooks · Europe

This chapter critically analyzes the relationship between urban gardening and socio-spatial justice, exploring whether and how urban gardening practices can tackle social and spatial injustices. Urban gardening points out less visible sides of urban governance and planning, unveiling different forms of power, dominance, and resistance to the unequal distribution of benefits and burdens in space. The analysis questions the contradictions in the constitution of urban spaces and their capability to mitigate material, political, and social exclusions, unfairness, and inequalities.

Efrat Eizenberg · Manchester University Press eBooks · Global

This concluding chapter reviews the literature on urban gardening, outlining both enthusiastic approaches that focus on its transformative potential and critical approaches that analyze it as greenwash or a strategy of neoliberal development. The chapter discusses how the book's chapters address this gap in understanding urban gardening and the resolutions and new directions they offer. It states that urban gardening is sometimes analyzed as a form of greenwash and a strategy of neoliberal development.

Rainer Einzenberger, Michaela Hochmuth · Digital Commons - Lingnan (Lingnan University) · China (Hong Kong)

An interview with Professor Kin-Chi Lau was conducted in March 2015 regarding the Urban Gardening Project at Lingnan University of Hong Kong. The interview portrayed the project's history, structures, and organizational characteristics, focusing on the challenges and difficulties participants faced in realizing the project.

Nadine Appelhans, Sabine Baumgart · · Morocco

An analysis of documents related to planning and agriculture and interviews with experts in Morocco indicated that urban and rural issues were treated as separate areas. Urban development affects daily travel distances as urban expansion changes distances between cultivated land and dwelling places. Data from Morocco show a lack of serious support for urban agriculture and animal husbandry in expanding urban agglomerations.