Research & reports

Phoebe Lickwar, Roxi Thoren · · Denmark

The Nærum Allotment Gardens in Denmark are publicly owned and privately leased and managed. A national Allotment Garden Association provides gardeners with a forum to counter the inherent vulnerability of these allotments to land use change. This structure indicates a persistent vulnerability of the gardens to changes in land use.

Larissa Maas, Rosane Malvestiti, Leila Amaral Gontijo · Cadernos de Saúde Pública · Brazil

This study assessed the main difficulties faced by seven urban organic farmers in two Brazilian cities without policies encouraging urban farming, through semi-structured interviews conducted from July to December 2018. The research revealed challenges such as a lack of trained labor, inadequate machinery and equipment for small areas, and insufficient financing, indicating that the absence of policies hinders the development of urban organic farming.

Paule Olivia Akotto, Dorothée Boccanfuso, Marie-Ève Yergeau · Cahiers de recherche · Global

This exploratory review synthesizes 35 reports and articles published between 1980 and 2019 to assess the potential of urban and peri-urban agriculture (UPA) to build resilience against poverty, food insecurity, and environmental challenges in developing countries. The review found that UPA creates one job for every 50 to 100 individuals, but these jobs are generally seasonal, and market access remains a significant constraint for farmers.

Emily A. Holmes, Mary F. Campbell, Wesley James, Karen Matthews · Ecology of Food and Nutrition · United States (Mississippi Delta)

This research evaluated the impact of school garden programs on fifth-grade students' garden knowledge, self-perception, and standardized test scores in the Mississippi Delta. The study found no effect on standardized test scores, but students showed increased garden knowledge and reported positive feelings about their future, teamwork, and leadership ability, supported by observations of joy and confidence.

Jonathan London, Bethany B. Cutts, Kirsten Schwarz, Li Schmidt, Mary L. Cadenasso · Agriculture and Human Values · United States (California)

This study, based on 24 interviews with urban agriculture (UA) leaders in Sacramento, California, identifies three "taproots" of UA projects: justice, health, and market. The analysis reveals how these roots interact differently with racial capitalism, creating disparities in their growth trajectories. Specifically, UA projects associated with the justice taproot are historically underrepresented and undervalued.

Jeffrey Gilbert, Christina Chauvenet, Brett C. Sheppard, Molly De Marco · Journal of Agriculture Food Systems and Community Development · Global

This study investigated leadership styles and volunteer engagement in community gardens through interviews with 13 garden managers and six focus groups with 48 volunteers. Findings revealed that managers struggled to recruit and retain volunteers capable of maintaining gardens. Garden managers exhibited either collaborative or directive leadership styles, both of which were acknowledged and appreciated by participants.

Azizan Marzuki, Ahmad Sahir Jais · PLANNING MALAYSIA · Malaysia

This qualitative exploratory review, based on a Systematic Literature Review of secondary data, investigated the connection between urban sprawl and its impact on agricultural productivity and food security in Malaysia. The study found that urbanization did affect Malaysia's food security self-sufficiency level, particularly for land-intensive food products like vegetables and livestock, due to the conversion of agricultural lands.

Colleen Hammelman, Alexis Saenz-Montoya · Journal of Latin American geography · Colombia (Medellín)

In Medellín, Colombia, large infrastructure projects by the local government, intended to transform the city, have contributed to a neoliberal sustainability agenda. Data from community meetings (2015-2017) with displaced people engaged in subsistence urban agriculture revealed that these projects exclude marginalized residents from newly valued "natural" commons. This territorialization strategy controls peripheral spaces by including approved actors while dispossessing less powerful residents of their right to the city.

Fatin Natasya Shuhaimi, Nursuriati Jamil, Raseeda Hamzah · Bulletin of Electrical Engineering and Informatics · Global

This study proposed and evaluated two Internet of Things (IoT)-based smart farming system designs for personal use in residential apartments, focusing on humidity and temperature monitoring. After comparing sensor readings (DHT 11 and DHT 22) over three days against actual environmental values, and assessing implementation costs and power consumption, the findings regarding accuracy and costs were inconclusive.

Paulo de Oliveira Neto, Andréa Rossi Scalco, Ana Elisa Bressan Smith Lourenzani, Sandra Cristina de Oliveira · Ciência e Natura · Brazil

This study analyzed the impact of urban agriculture on food security in community gardens in the city of Maringá, Brazil. The research was carried out using the EBIA method, with descriptive statistical analysis and multiple linear regression procedures. The results indicate that the activity did not contribute to the food security of people who depend on the resources generated, whether for consumption or income.

Nicole Paganini, Stefanie Lemke · Local Environment · South Africa (Cape Town)

This study, conducted from 2017 to 2019 in Cape Town, South Africa, and Maputo, Mozambique, explored urban agriculture's contributions to livelihoods and food availability through a food justice lens. In Cape Town, NGO-led urban agriculture regulated production and market access, serving wealthy consumers, with only 15% of farmers consuming their produce. In Maputo, urban agriculture contributed to local food availability, with 99% of farmers eating their produce, but farmers depended on intermediary-determined prices and faced unequal access to inputs. The study revealed stark structural inequalities and uneven power dynamics in both contexts.

Rachael Baker · · United States (Detroit)

Farming on Detroit's vacant land has been used for blight reduction and food cultivation since the 1970s, supported by initiatives like Farm-a-Lot. However, in 2015, the mayor’s office directly transferred 40 acres of city-owned land to a for-profit urban agriculture business in Detroit’s east Poletown, raising concerns about equitable resource distribution.

R. Holm Thomas · Lincoln (University of Nebraska) · United States (Lincoln)

This study investigated remediation strategies to reduce heavy metal uptake in soil from a potential community garden lot near a railroad in Lincoln, NE, where elevated concentrations of lead (Pb) and arsenic (As) were detected. In a greenhouse experiment, romaine lettuce was grown. Biochar amendment resulted in the lowest concentrations of Pb and As in lettuce leaves and stems, whereas coffee grounds amendment led to the highest concentrations across all tested plant parts.

Tanmoy Roy Tusher, Md. Eusuf Sarker, Sumaya Nasrin, Tapos Kormoker, Ram Proshad, Md. Saiful Islam, Shamim Al Mamun, A. R. M. Tareq · Toxin Reviews · Bangladesh

This study investigated toxic metal and PAH contamination in rooftop soils and vegetables (red amaranth, spinach) in urban and peri-urban Bangladesh. Urban rooftop soil and vegetables were highly contaminated with toxic metals and PAHs compared to peri-urban samples. Lead (Pb) and cadmium (Cd) concentrations in urban vegetables exceeded safe limits. However, health risk indices indicated that the levels of toxic metals and PAHs in urban rooftop vegetables would not pose carcinogenic or non-carcinogenic health risks for adults and children, deeming them safe for consumption.

Harry Kasumba, M. Mashologu, Patrick W Bwowe · · South Africa

An investigation into the sustainability of school food gardens in Chris Hani District, South Africa, used a mixed-methods approach with a purposive sample of six schools. Findings revealed significant bottlenecks hindering sustainability, specifically inadequate funding and a lack of proper planning for school food gardening activities.

Steven C. Deller, David Lamie, Maureen Stickel · · Global

This review provides a critical analysis of current research on local and regional food networks, including urban farming projects. It reveals that many presumptions of the local food movement remain largely untested, and much of the current research lacks strong theoretical grounding and quantitative rigor. The review emphasizes the importance for practitioners to distinguish between objective, research-based information and speculative, advocacy-oriented analysis.

Fabien Ilunga Mpanga, Michel Shengo Lutandula⃰ · The Global Environmental Engineers · Democratic Republic of Congo (Lubumbashi)

A study conducted in the Kasungami district of Lubumbashi, Democratic Republic of Congo, investigated the link between the use of polluted waters in urban agriculture and heavy metal contamination in soil and cultivated vegetables (amaranths, broccolis). Physicochemical and mineral analyses of water, soil, and plant samples revealed that heavy metals, except cobalt, were present in the water used for urban agriculture at concentrations below quality standards, but the soil contained heavy metals at phytotoxic concentrations. Only broccolis were contaminated with lead, while amaranths had heavy metals below quality standards. These findings suggest that urban agriculture in large agglomerations of the DRC could endanger consumers' health.

Françoise Jarrige, Cyril Mumenthaler, Joëlle Salomon Cavin · IRIS · Switzerland (Lausanne)

This chapter described and analyzed the implementation of a new agricultural project on a domain in Lausanne, Switzerland. The innovative process was built through confrontation between stakeholder strategies, with negotiations and adjustments. It appeared that powerful economic and legal constraints limited some expected innovations, particularly regarding land contracts. Ultimately, the anticipated multifunctional agricultural project was implemented through three coordinated structures: an association, a cooperative, and an agricultural enterprise.

Sulistiya Sulistiya · Jurnal Pertanian Agros · Indonesia

This qualitative study in Indonesia investigated citizen participation in community-based urban agriculture, finding that while overall participation was high, the decision-making stage showed the lowest level of engagement. Most citizens had low group experience and had lived in their housing for less than 30 years. Age, education, income, and family burden were not significantly related to participation, but group experience, length of stay, activity methods, and service quality were significant factors.

Gábor Teke, Katalin Hubai, Dorina Diósi, Nóra Kováts · Bulletin of Environmental Contamination and Toxicology · Global

This laboratory study assessed the foliar uptake and accumulation of airborne polyaromatic hydrocarbons (PAHs) in lettuce (Lactuca sativa) using an aqueous extract of urban aerosol, following OECD Guideline 227. The study found significant accumulation of PAHs in lettuce, with naphthalene showing the highest bioconcentration factors (BCFs) and anthracene, pyrene, and fluoranthene showing the lowest bioaccumulation potential. The BCF of each PAH strongly correlated with its molecular weight.

Jeffrey Alan Hoffmann · · United States

Hoffmann examined oral histories and interviews (1995-1996, 2014, 2017) with elders of multiple ethnicities in a working-class urban agricultural neighborhood in the U.S. Southwest. The study found that while ecocultural memory fosters trust in shared water relationships, historical anxieties stemming from urban development violence can impede communities' ability to organize to protect and restore ancestral waterways.

Dávid Korányi, Róbert Gallé, Bettina Donkó, Dan Chamberlain, Péter Batáry · Urban Ecosystems · Germany (Göttingen)

This study in Göttingen, Germany, investigated the effects of green space (GS) types and surrounding urbanization on bird communities. Bird observations were conducted using the point-count method in allotments and parks, with urbanization levels measured by the percentage of impervious surfaces. Increasing levels of urbanization around green spaces had no effect on bird species richness, functional traits, or community composition.

Tony Ngwenya, Pfano Mashau · Problems and Perspectives in Management · South Africa (Durban)

This study investigated institutional support for youth-owned Small, Medium, and Micro-Enterprises (SMMEs) in Durban's urban agribusiness sector using a quantitative methodology. Findings indicated that CSR interventions had not yielded a fundamental impact, and there was a lack of tangible, result-driven institutional support from policymakers and authorities. Furthermore, targeted technological transfer was a constraining factor, and a lack of monetary and non-monetary access hampered the SMMEs' competitiveness and profitability.

Mulugeta Chane Wube · RePEc: Research Papers in Economics · Ethiopia

A descriptive study analyzed the effect of industry extension service packages on the performance of Micro and Small Enterprises (MSEs) in Dessie, South Wollo, and Oromia Special zones, Ethiopia, sampling 248 out of 646 MSEs. The analysis revealed that industry extension services provided by TVET trainers were inadequate across all four dimensions: technical, technology, Kaizen, and entrepreneurship. The overall performance of the surveyed MSEs was found to be very low, concluding that the provided extension services were insufficient in improving their performance.

Dauda Rotimi Awoniran, Omotayo Ben Olugbamila, Emmanuel Olufemi Omisore · Analele Universităţii din Oradea Seria Geografie · Sub-Saharan Africa (Lagos)

This study examined urban agriculture practices and land use changes in Lagos Metropolis, Sub-Saharan Africa, over three decades using satellite imagery and primary data from four Local Government Areas. It found that cultivated lands decreased by 28.70% between 1986 and 2000, and by 19.25% between 2000 and 2016. Urban farmlands converted to other uses by 89.48% between 1986 and 2000, and by 75.64% between 2000 and 2016, indicating that food security is under threat as land for urban farmers shrinks.