Research & reports

Nathália Miasato Pimont, Rafael Alves Santomauro, Carolina De Abreu Pianta, Pablo Menegon Castilho, João Gabriel Neves Viana, Giovanna Carolina Silva Boscolo, Letícia Santos Balbino, Juliana Izidoro Lucas, Aline Ticiani Pereira Paschoal, Italmar Teodorico Navarro, Regina Mitsuka‐Breganó, Fernanda Pinto Ferreira · Ensaios e Ciência C Biológicas Agrárias e da Saúde · Brazil (Londrina)

This study, conducted in Londrina, Paraná, Brazil, between 2019 and 2020, analyzed community garden vegetables for parasites and irrigation water for *Escherichia coli*. *Escherichia coli* and total coliforms were detected in 66.7% (6/9) of water samples. Parasites of *Ascaris*, *Ancylostoma*, and *Entamoeba* genera were identified in vegetable samples, demonstrating contamination of both community garden vegetables and irrigation water.

Naoual Zerrari, Naoual Raïs, Mustapha Ijjaali · Soil and Sediment Contamination An International Journal · Morocco (Fez)

Nine soil samples from agricultural soils in Fez-Upstream, Morocco, were analyzed to assess concentrations of major elements, Rare Earth Elements (REEs), and heavy metals. The soils were enriched by light REEs, and the contamination factor and degree of contamination indicated moderate and low contamination, respectively. However, all sampling sites showed PLI values above 1, indicating obvious anthropogenic pollution due to human activities.

Natalie Call, Elizabeth Silber, E. Binney Girdler · Journal of Agriculture Food Systems and Community Development · United States

This GIS-based study of Kalamazoo, Michigan, analyzed how accessibility to different types of food access points — full-service grocery stores, farmers markets, community gardens, food pantries, and convenience stores — differed between low-income and higher-income census tracts. All full-service grocery stores were accessible via bus routes, but 11% of residents in low-income areas lacked adequate access, living beyond the 0.25-mile walkable distance to bus routes. "Positive" access points such as community gardens, food pantries, and farmers markets were found to be concentrated in areas that already had grocery store access, whereas "negative" access points — convenience and dollar stores, which provide lower-quality, highly processed food — filled the access gap in lower-income areas instead. More than twice as many low-income residents had walkable access to convenience stores as higher-income residents, with 81% of those convenience stores located within low-income tracts.

Lukas Egli, Judith Rüschhoff, Joerg A. Priess · Frontiers in Sustainable Food Systems · Global

A systematic review of quantitative empirical research on the sustainability effects of community-supported agriculture (CSA) covered 39 studies. Fewer than 30% of the studies assessed ecological sustainability aspects, but where CSA farms were compared to reference systems, they mostly performed better on resource use efficiency and greenhouse gas emissions. Most studies assessed social aspects; many showed that CSA still fails to reach low-income households, so members do not represent the average population, while CSA membership was associated with improved health and sustainability behavior. Economic variables were assessed in more than half of the studies, but knowledge of CSA's relative economic performance remains scarce, though early studies indicate high economic viability. The review calls for more research on ecological aspects specifically, comparisons across farming and marketing systems, and integration of knowledge from theses and practical sources in multiple languages.

Ambroise Dalecky, Madougou Garba, Abdoulaziz Ibrahim Danzabarma, Jonas Etougbétché, Sylvestre Badou, Henri‐Joël Dossou, Ibrahima Sow, Cheikh Tidiane Niang, Ousmane Diene, Idrissa Diallo, Mohamed Seyidna Ali Saghiri, Mohamed El Hady Sidatt, Frank van Steenbergen, Amadou Bocar Bal, Luwieke Bosma, Gualbert Houémènou, Solimane Ag Atteynine, Karmadine Hima, Gauthier Dobigny, Yonas Meheretu · Environnement Risques Santé · Sub-Saharan Africa

The abstract text provided consists only of acknowledgments—thanking Valérie Golaz (INED-LPED), Marc Egrot (IRD-LPED), and the organizers of the international conference "Implementation of public policies and pesticides in the Souths" (PoPPesCI project, on public policies and pesticides in urban agriculture), held in October 2021 in Bouaké, Côte d'Ivoire, for prompting the article's writing. It contains no actual findings or content about rodent proliferation or synthetic chemical rodenticides despite what the title suggests.

Veronica Sebald, Julia M. Schmack, Monika Egerer · Renewable Agriculture and Food Systems · Germany

This study surveyed the occurrence of poisonous plant species in 30 urban community gardens across two German cities, Berlin and Munich, and examined concerns around poisonous and highly poisonous plants in urban garden settings. It found that plants producing substances toxic to humans occur in these gardens while also potentially holding ecosystem-functioning and biodiversity-conservation value, creating a trade-off with the ecosystem service of human health promotion, and concludes that poisonous plants should be carefully monitored and managed—depending on garden participants and the goals of the garden organization—to mitigate health risks while still supporting biodiversity conservation.

Joshua Newell, Alec Foster, Mariel Borgman, Sara Meerow · Cities · United States (Detroit)

A study in Detroit's Lower Eastside (~15 sq. miles) examined the spatial extent, characteristics, and residents' perceptions of urban gardens using spatial analysis and interviews. Gardens covered less than 1% of vacant land and were often ephemeral. Primary obstacles to scaling up urban agriculture in Detroit include uncertainty over land tenure, environmental pollutants, potential ecosystem disservices, and a lack of government support and capital investment.

Grace Ning Yuan, Gian Powell B. Marquez, Haoran Deng, Anastasiia Iu, Melisa Fabella, Reginald B. Salonga, Fitrio Ashardiono, Joyce A. Cartagena · Heliyon · Global

This review examined urban agriculture (UA) across technology, socio-economy, and policy, noting that supporting UA expansion in cities is challenging due to its poor economic profitability. The study highlighted UA's value beyond profitability, including social, health and well-being, disaster risk reduction, and environmental benefits. It also presented advancements in UA technologies and plant biotechnology as potential solutions for increasing the future profitability of commercial UA.

Janet Music, Lisa Mullins, Sylvain Charlebois, Charlotte Large, Kydra Mayhew · Humanities and Social Sciences Communications · Canada

This study compared 19 municipal urban home food gardening programs in Canada in 2020, which provided free gardening supplies and instructions. It found a complicated relationship between municipalities, gardening programs, and food security, and determined that gardening somewhat alleviated social and emotional challenges from the COVID-19 pandemic. However, municipalities are limited in their policy capacities to adequately address food insecurity in Canada.

Melissa Anna Murphy, Peter E. Parker, Margot Hermus · Local Environment · Global

This article aims to unpack how urban settings, organizational forms, and municipal enabling affect urban gardening (UG) practices towards inclusion in public space. It draws on urban commons theory and research on inclusion in public space to understand multi-faceted UG governance and its exclusionary aspects. A comparative analysis of UG initiatives in three Northern European municipalities explores both municipal enabling and the co-production of inclusive public space.

Sani Abubakar Mashi, Samuel Yakubu, Sofia Yuniar Sani · Asian Research Journal of Agriculture · Africa

A study in the Kubanni basin of Zaria, Africa, evaluated the quality of wastewater used for irrigating urban agriculture soils. The wastewater contained arsenic, iron, chromium, copper, zinc, manganese, and lead. Although concentrations were generally below Nigeria's permissible limits for irrigation, the study noted the metals' tendency to accumulate in soils, raising concerns about potential heavy metal buildup in irrigated soils and crops.

Myeong Suck Jeong, Mina Lee, Chaw Su Lwin, Kwon-Rae Kim · 한국토양비료학회지 · South Korea

This study investigated heavy metal contamination in urban agricultural soils near railway tracks and an industrial complex in Jinju, South Korea, to ensure food safety. While the average heavy metal values did not exceed soil contamination guidelines, some individual soil samples showed concentrations higher than the guidelines. Furthermore, the geoaccumulation index (Igeo) indicated that several soils were contaminated compared to background levels, with Cu, Pb, Zn, and Sb showing the highest contamination. Long-term monitoring of urban vegetable garden soils is recommended.

Julie Cornfield, Harmonii Odinga, Jaleh Kermani, Katherine P. Theall, M. Pia Chaparro · American Journal of Health Promotion · United States (New Orleans)

An environmental assessment of 10 community gardens and interviews with 20 community members and administrators in New Orleans, Louisiana, explored factors affecting garden use. Gardens scored high in design and cleanliness but low in accessibility and information availability. While community members perceived gardens could increase fresh food access, administrators believed gardens could not produce enough food for community-wide impact, emphasizing social benefits instead.

Claudia Marcela Puerto Layton · Interdisciplinary Journal of Environmental and Science Education · Colombia

This article reports the systematization of an experience with home/school gardens in an educational institution in Bogotá, involving high school students (seventh and eighth grades) in face-to-face and remote modalities. Results include the reconstruction of the strategy and didactic process, highlighting aspects that affect or support the educational process in each modality. Reflections with students indicated that while home gardens can contribute to food security, pesticides can pose a risk to food security in Colombia.

Tomasz B. Falkowski, Bethany Jorgensen, Donald A. Rakow, Ashmita Das, Stewart A.W. Diemont, Theresa Selfa, Austin B. Arrington · Frontiers in Sustainable Food Systems · United States

A study in four New York cities analyzed the benefits and challenges of community gardens during the COVID-19 pandemic through surveys and semi-structured interviews with community gardeners. Gardeners experienced benefits such as connection, mental and physical well-being, and a safe refuge, but the biggest challenge was limited socializing due to personal behavioral changes and garden rules. This research suggests that while community gardens can be resilient sites of reprieve during crises, the pandemic also exposed their vulnerabilities.

M. Sitaker, S. Ennett, C.E. Walsh, R. Seguin-Fowler, J. Kolodinsky, A. Ammerman, K. Hanson, S.B. Pitts Jilcott · UNC Libraries · United States

This exploratory study investigated associations between snack foods, sugar-sweetened beverages (SSB) consumption, and overweight and obesity in children from low-income households. Data from 305 households participating in a multi-state cost-offset (CO-CSA) intervention in 2016 and 2017 were analyzed. No associations were found between snack or SSB consumption and child overweight.

Riccardο Petrini, Lisa Ghezzi, Simone Arrighi, Lisa Genovesi, Chiara Frassi, Luca Pandolfi · International Journal of Environmental Research and Public Health · Italy (Tuscany)

Trace elements were measured in soil and groundwater in the Fornaci di Barga urban area, Tuscany, Italy. Results indicate that Cu, Zn, and Cd are the main contaminants in surface soil, likely originating from airborne particulate matter deposition from metallurgical activity. Risk assessment considering soil ingestion and dermal contact exposure routes revealed that the cadmium Hazard Quotient approaches unity for children, and the cadmium risk-based concentration is only slightly lower than the maximum concentration measured in soil.

Jihan Faouzi, Imane Bedoui, Sanae Rezouki, Tarik Moubchir, Aimad Allali, Noureddine Eloutassi, Amal Lahkimi · Ecological Engineering & Environmental Technology · Morocco (Fez)

This study in Fez, Morocco, compared bacteriological and parasitological contamination in urban, peri-urban, and rural irrigation waters, and their transfer to soil and crops (cardoon and eggplant). Investigated microorganisms included total and thermotolerant coliforms, helminth eggs, Salmonella, and cholera vibrio. Results revealed contamination exceeding national and international standards for both types of coliforms in treated wastewater (TWW), wastewater (WW), Oued Fez water, and upstream well water in both winter and summer. This fecal contamination was found in soils and crops irrigated by urban and peri-urban water. Helminth eggs and cholera vibrio were also present in these waters, soils, and crops, with Salmonella detected in TWW in summer. Only the plot irrigated with Oued Bitit water in the rural zone met standards across all three levels of irrigated water, soil, and plants, and in both periods.

Shiyu Cui, Wenbin Liu, Hexian Jin, Yi Qiao, Ying Wang, Dan Liu · Atmosphere · Global

This study investigated the effects of mixed cropping garden plants (Festuca arundinacea, Ageratum conyzoides, Trifolium repens) with Brassica parachinensis on Cr-contaminated soil remediation. While mixed cropping with Trifolium repens resulted in the highest B. parachinensis yield and Cr content below standard in edible parts, mixed cropping with Ageratum conyzoides aggravated Cr pollution in edible parts of B. parachinensis, making it unsuitable for planting.

Luciane Maria Vieira, Leonardo Antunes Pessoa, Vinícius Estevan Carvalho Pereira, Karen Silvério Góis, Edivando Vítor do Couto · International Journal of River Basin Management · Brazil

Water and sediment samples from four sites in a countryside urban-farming watershed landscape in Southern Brazil were analyzed for pollution assessment. All water samples were contaminated with faecal and total coliforms, indicating issues with treatment effectiveness. While pesticide concentrations in water were not significant, sediment copper concentrations were eight times higher than the Threshold Effect Level (TEL), with chromium and copper exceeding TEL at all sites. Sources for zinc, copper, nickel, cadmium, and chromium included plantations, forests, and domestic sewage discharges.

Grete Swensen, Vebjørn Egner Stafseng, Véronique Karine Simon · International Journal of Heritage Studies · France (Bordeaux)

This comparative case study examines two regeneration projects, the Darwin Ecosystem Project in Bordeaux, France, and Dr. Dedichen’s Greenhouse in Oslo, Norway, to understand how heritage combined with urban gardening can enhance areas requiring regeneration. The study notes that conflicting economic, political, and cultural views are likely to affect the heritage discourse in marginalized urban areas. It describes how old buildings and historical fragments can be integrated into urban planning initiatives, with residents, artists, and citizen groups cooperating with planning authorities to transform neighborhoods.

Jonathan Stubberfield, Mads Troldborg, E. Louise Ander, N.M.J. Crout, Scott D. Young, Rupert Hough · Agronomy · United Kingdom

This study investigated the influence of gardening routines on health benefits and risks among 120 urban gardeners in the UK. Participants showed a correlation between autumn/winter gardening activity and fruit/vegetable consumption, with higher physical activity levels and lower BMI than average. However, while gardening offers health benefits, the health risks from gardening on soils mildly contaminated with cadmium and lead may outweigh these benefits, requiring formal consideration within a risk management framework.

Wanda Martin, Lindsey Wagner, Kerry Marshall · Human Geography · Canada

This qualitative study investigated the controversy surrounding urban hen bylaws in Canadian cities, based on semi-structured interviews with 15 urban residents. The research identified three main areas of struggle: the need for education on urban agriculture, differing values for city life, and tensions between individual rights and the collective good. The findings expose challenges in urban hen legislation.

Muhammad Sarjan, M. Taufik Fauzi, Ruth Stella P. Thei · Unram Journal of Community Service · Indonesia (Mataram City)

This action research in Mataram City during the COVID-19 pandemic introduced Integrated Pest Management (IPM) practices to urban farming groups. Group discussions revealed that while participants were interested in developing fresh vegetables and fruits and found benefits in meeting family food needs, most members were unfamiliar with environmentally friendly cultivation techniques, particularly IPM.

Arnaud Sapin, Philippe Bodénan, Thierry Lebeau, Ghozlane Fleury‐Bahi · Journal of Community & Applied Social Psychology · France

A qualitative study in Nantes, France, interviewed 28 allotment garden users to examine psychosocial impacts. While highlighting benefits like psychological well-being, physical health, self-development, and social bonding, the study found these were balanced by various conflicts reported by participants. Lexicometric analysis confirmed that positive and negative social aspects are significantly associated and must be considered jointly.