Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
39 results(1 / 2)
Avaliação parasitológica e microbiológica de hortaliças submetidas à sanitização com hipoclorito de sódio
2026Threice Natália Ribeiro Pexe, Julia Yumi Muraoka, Fabiana Cristina Donofrio, Cibele Bonacorsi · Scientific Electronic Archives · Brazil (Sinop)
Parasitological and microbiological evaluation was conducted on 40 vegetable samples (watercress, lettuce, chicory, kale, escarole, arugula, parsley) randomly selected from supermarkets, open-air markets, and a community garden in Sinop, Brazil. Before treatment, 12 out of 40 (30.0%) vegetable samples were contaminated with enteroparasites, and all 40 showed microbial growth, with 3 (7.5%) containing Escherichia coli. After sanitization with sodium hypochlorite, parasitic forms were absent, but high initial contamination was confirmed.
Contamination & food safetyHealthCommunityEstablishing a community garden in Miawpukek First Nation, Newfoundland, Canada: Research brief on soil contamination challenges and solutions
2025Robert J. Moriarity, Meaghan J. Wilton, Eric N. Liberda, Tim Drew, Ada John, Howard Jeddore, Atanu Sarkar, Jim D. Karagatzides, Leonard J. S. Tsuji · Journal of Agriculture Food Systems and Community Development · Canada (Newfoundland)
This study aimed to develop safe community garden sites in Miawpukek First Nation, Newfoundland, Canada, addressing potential soil contamination. Soil testing revealed inorganic arsenic levels exceeding Canadian agricultural guidelines. Hügelkultur-style raised beds with imported soil were used, resulting in undetectable arsenic in potatoes grown there, while potatoes from contaminated soil exceeded safety limits. Kale grown in both raised beds and native soil remained within safety limits.
Contamination & food safetyCommunityHealthFood sovereignty & justiceMultidrug resistance in bacteria associated with leafy greens and soil in urban agriculture systems
2025E. Ryan Harrelson, Qingyue Zeng, Mairui Gao, Magaly Toro, Ryan A. Blaustein · Frontiers in Plant Science · United States (Washington, D.C.)
This study analyzed 87 multidrug-resistant (MDR) bacterial strains from leafy greens (n=29), root zone soil (n=42), and bulk soil (n=16) in Washington, D.C. urban agriculture systems using whole genome sequencing. The isolates, spanning 4 phyla and 14 genera, carried diverse antimicrobial resistance genes (ARGs) and mobile genetic elements (MGEs). The results indicate that MDR bacteria are present in urban agriculture systems, including on fresh produce, dominated by soil-associated taxa carrying diverse ARGs and MGEs, which suggests implications for resistance mobilization.
Contamination & food safetyHealthCommunityLead Contamination Propagation into Plants of a Metro Atlanta Home
2025Carithers, Jaci, Gowen, Samantha, Jenney, Francis · Digital Commons - PCOM (Philadelphia College of Osteopathic Medicine) · United States (Atlanta)
A study in a Metro Atlanta residence, United States, analyzed lead contamination in soil and plant samples using inductively coupled plasma mass spectrometry (ICP-MS). The research found substantial lead contamination, particularly in areas where crops were grown. Results demonstrated the propagation of lead from contaminated soil into local vegetation over time, with an average level of 143.9 mg/kg, ranging from 5.1 mg/kg to 499.5 mg/kg.
Contamination & food safetyHealthDIYQualidade Microbiológica no Cultivo de Plantas Alimentícias e Medicinais Produzidas em uma Horta Urbana de uma Instituição de Ensino
2024Beatriz Barbosa da Silva, Caroline Senatore, Manueli Monciozo Domingos, Jackline Freitas Brilhante de São José · Ensaios e Ciência C Biológicas Agrárias e da Saúde · Brazil (Vitória)
From March to May 2023, the microbiological quality of food and medicinal plants, soil, and irrigation water was evaluated in an urban garden at an educational institution in Vitória, Brazil. 16.6% (n=2) of the analyzed plants exceeded legal limits for total coliforms at 35ºC, and Salmonella spp. was detected in 41.6% (n=5) of plants. Salmonella spp. was also found in 80.0% (n=4) of soil samples, suggesting a potential source of plant contamination.
Contamination & food safetyHealthFood educationRemediation of Soils Contaminated by Timbers in Community Gardens
2024Wendy J. Heiger-Bernays, Alicia Fraser, Valerie Burns, Kerry Diskin, Diedre Pierotti, Kian Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · Scholarworks (University of Massachusetts Amherst) · United States (Boston)
This study identified the nature and extent of soil contamination by polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) pressure-treated lumber in a representative community garden in Boston. Elevated levels of PAHs and arsenic were present in the gardens studied, with these timbers serving as a continuous source of contaminants. This is the first study to investigate contaminants other than lead and evaluate the effect of adding city compost on select soil contaminants in urban garden soil.
Contamination & food safetyHealthCommunityCompostHow healthy are horticultural plants cultivated in urban gardens in polluted cities? The case of Mexico City
2024Ivonne Alonso Durán, Elizabeth Hernández-Álvarez, Ofelia Mortón-Bermea, Javier Castro-Larragoitia, Margarita Collazo-Ortega · Revista Internacional de Contaminación Ambiental · Mexico (Mexico City)
This study investigated the concentrations of 15 metal(loid)s in four vegetables (tomato, onion, chili, lettuce) cultivated in four urban garden locations in Mexico City. While soil analysis showed only vanadium exceeded Mexican limits in one location, various vegetables harvested in the study exceeded international recommended limits for cadmium, mercury, and lead. Lettuce exhibited the highest metal concentrations and transfer factors, with exceptionally high transfer factors for cadmium in lettuce and mercury in tomato.
Contamination & food safetyHealthPlant growth and microbial responses from urban agriculture soils amended with excavated local sediments and municipal composts
2023Jordi Guimera Garcia, Natalie Bray, Yowhan Son, Aleah L. Butler-Jones, Sara Perl Egendorf, Jenny Kao‐Kniffin · Journal of Urban Ecology · United States (New York City)
In New York City, a study investigated plant growth (tomato, pepper, kale) in soils constructed from four municipal composts mixed with sediments from the NYC Clean Soil Bank, to assess the potential for safe urban agricultural soils. While Clean Soil Bank sediments enhanced plant growth when mixed with BRL compost, they also negatively impacted tomato aboveground biomass production by 29% in LES compost and tomato plant height by 18% in QBG compost, indicating variable effects depending on compost properties.
Contamination & food safetyCompostOrganic cycleHealthClimate changeDeveloping and Implementing In-Person and Virtual SoilSHOPs in Atlanta, Georgia, as a Community-Engaged Approach to Screen and Prevent Soil Lead Exposure
2023Eri Saikawa, Erin Lebow-Skelley, Rosario Hernandez, Faith Flack-Walker, Leann Bing, Candis M. Hunter · Journal of Public Health Management and Practice · United States (Atlanta)
In Atlanta, Georgia, in-person and virtual Soil Screening, Health, Outreach and Partnerships (soilSHOPs) were implemented through a community-engaged partnership to screen soils for lead. These soilSHOPs informed best practices for increasing awareness about lead exposure and led the US Environmental Protection Agency to identify a Superfund site, confirming soil lead contamination.
Contamination & food safetyHealthCommunityFood educationIntegrating water, sediments, and land use analysis for pollution assessment in a countryside urban-farming watershed landscape in southern Brazil
2022Luciane 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.
Contamination & food safetyHealthFirst report of Tomato brown rugose fruit virus infecting tomato in Florida, USA
2021K. K. Dey, Maria Velez-Climent, P. Soria, Özgur Batuman, Vessela Mavrodieva, Guo Wei, Jun Zhou, Scott Adkins, John D. McVay · New Disease Reports · United States (Florida)
In October 2019, Tomato brown rugose fruit virus (ToBRFV) was detected in six of eight symptomatic tomato plants from a 1.6 ha community garden in Alachua County, Florida. The plants also showed symptoms of Tomato yellow leaf curl virus (TYLCV), with three samples testing positive for TYLCV. This marks the first report of ToBRFV infecting tomatoes in Florida, USA.
Contamination & food safetyCommunityHealthPhytoavailability of Lead for Vegetables in Urban Garden Soils
2021Chammi P. Attanayake, Ganga M. Hettiarachchi, Mónica Palomo, Gary M. Pierzynski, Blanca Calderón · ACS Agricultural Science & Technology · United States
The effect of limestone and composted manure on lead (Pb) in vegetables and Pb bioaccessibility was assessed in a contaminated urban garden (total Pb ~200 mg kg⁻¹). Amendments did not affect Pb in vegetables or Pb bioaccessibility. Peeling reduced Pb concentration in radish by half, and removing surface dust reduced Pb in leafy vegetables by 40-50%. Daily Pb intake from consuming lettuce and carrot/beetroot from this garden was approximately 1.5 times higher than the interim reference level proposed by the U.S. Food and Drug Administration.
Contamination & food safetyHealthCompostCommunityProximity of Urban Farms to Hazards With and Without Heavy Metal Contamination in Baltimore, Maryland
2021Jonathan Hall, Isabel Shargo, Niya Khanjar, Jianna Howard, Laura Schmidt, Ashley Deng, Camryn Edwards, Isabelle Berman, Joseph Galarraga, Sacoby Wilson · Environmental Justice · United States
This study in Baltimore, Maryland, used GIS mapping and spatial analysis to assess the proximity of urban farms to environmental hazards, including those with heavy metal contamination. Analyses indicated that contamination of urban farms is a possibility due to proximity: more environmental hazards were found in census tracts with urban farms, and low-income communities of color had hazards near urban farms. Historically industrial areas showed a higher concentration of environmental hazards with heavy metal or unknown contamination.
Contamination & food safetyHealthCommunityUrban–rural linkagePolicyProximity of Urban Farms to Contaminated Sites in Baltimore, Maryland
2021Isabel Shargo, Jonathan Hall, Ashley Deng, Niya Khanjar, Camryn Edwards, Isabelle Berman, Joseph Galarraga, Sacoby Wilson · Landscape Journal · United States (Baltimore)
This study in Baltimore, Maryland, used GIS mapping and hotspot analysis to assess the proximity of urban farms to environmental hazards. Most urban farms were located in low-income communities of color. However, most environmental hazards were not near urban farms but in predominantly White areas or historical industrial centers. Despite a generally low risk of contamination, some urban farms in low-income and Black/African American communities were potentially contaminated by hazardous sites.
Contamination & food safetyHealthCommunityRemediation Strategies to Reduce Heavy Metal Uptake in Lettuce Grown in Contaminated Urban Soil
2020R. 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.
Contamination & food safetyHealthCommunityHeat Treatment Reduces Bacterial Contamination of Medicinal Plants Grown in A Community Garden
2020Cleusa Fernandes Ramos, Andréia Assunção Soares, Isabela Carvalho dos Santos, F. Ramos, Odair Alberton, Luciana Kazue Otutumi, Lidiane Nunes Barbosa, Ricardo de Melo Germano, Daniela Dib Gonçalves, Luiz Sérgio Merlini · Journal of Pure and Applied Microbiology · Brazil
This 2020 study in Brazil evaluated the bacteriological quality of six medicinal plants from community gardens, including Cymbopogon citratus and Aloysia citriodora. Analysis of cold extracts revealed bacterial contamination, with Plectranthus barbalus showing the highest aerobic mesophile count and Aloysia citriodora the highest coliform count at 45°C. However, the study concluded that heat treatment (boiling for teas) can significantly reduce or eliminate this bacteriological contamination, making the plants safe for consumption.
Contamination & food safetyCommunityHealthFood educationAtlanta Residents’ Knowledge Regarding Heavy Metal Exposures and Remediation in Urban Agriculture
2020Lauren Balotin, Samantha Distler, Antoinette L. Williams, Samuel J. W. Peters, Candis M. Hunter, Chris Theal, Gil Frank, Taranji Alvarado, Rosario Hernandez, Arthur Hines, Eri Saikawa · International Journal of Environmental Research and Public Health · United States (Atlanta)
This study investigated Atlanta residents' knowledge regarding heavy metal and metalloid (HMM) exposures and remediation in urban agriculture, following the detection of industrial slag and hazardous soil contamination in West Atlanta in 2018. Through surveys and follow-up interviews, it was found that participants were concerned about the potential health effects of soil contaminants but unconcerned with produce in their gardens. Gardeners' knowledge of HMM exposure sources and remediation methods was low and varied based on racial group.
Contamination & food safetyHealthCommunitySoil Lead Concentration and Speciation in Community Farms of Newark, New Jersey, USA
2020Omanjana Goswami, Ashaki A. Rouff · Soil Systems · United States (Newark)
Soils from seven community farms in Newark, New Jersey, USA, were analyzed for lead (Pb) concentration and speciation. Single-step extractable Pb concentration ranged from 22 to 830 mg kg−1, with 21% of samples exceeding the NJDEP limit of 400 mg kg−1 for residential soils. Lowest Pb concentrations were detected in raised beds, while uncultivated native soil and parking lot samples had the highest values. Although most Pb is associated with reducible and oxidizable soil fractions, indicating a lower risk of mobility and bioavailability, Pb exposure through ingestion and inhalation pathways remains a concern when directly handling the soil.
Contamination & food safetyHealthCommunityAgricultura urbana contribui para a segurança alimentar no Brasil? O que nos diz a produção científica dos últimos dez anos
2020Moisés Savian, Mari Inês Caríssimi Boff, Pedro Boff · Cadernos de Agroecologia · Brazil
This study evaluated Brazilian scientific production from 2009 to 2018 on urban agriculture's contribution to food and nutritional security, analyzing 34 selected articles out of 612. It found that while agrobiodiversity is present in urban agriculture areas, pesticide use is a reality in some crop plots. The research suggests urban agriculture must be based on agroecology to avoid environmental contamination and produce healthy food.
Contamination & food safetyFood sovereignty & justiceBiodiversityOrganic cycleHealthGeospatial analysis and assessment of garden soil contamination in New York City
2019Anna 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.
Contamination & food safetyHealthCommunityPráticas agrícolas e análise socioeconômica e ambiental de canteiros urbanos: um estudo de caso dos horticultores do bairro Mangueira – Grajaú/MA
2018Jonas Aleixo da Silva · · Brazil
This qualitative case study analyzed urban agriculture practices in the Mangueira neighborhood, Grajau-MA, Brazil, through visits, observations, and interviews. The study found that while urban horticulture provided benefits like income and product quality, it faced difficulties including reliance on borrowed land, soil depletion, and the use of agrochemical products, indicating that production was not free from chemical fertilizers.
Contamination & food safetyCommunityEconomicsHealthWelfareUrban–rural linkageZoonotic disease transmission associated with feral cats in a metropolitan area: A geospatial analysis
2018Sara J. Taetzsch, Andrea S. Bertke, Karen Gruszynski · Zoonoses and Public Health · United States (Richmond)
This study investigated the potential overlap between feral cat territories and human-frequented areas in the Richmond metropolitan area, Central Virginia, using GIS. From July to November 2016, 275 feral cats were trapped for TNR clinics. Findings showed that 8.0% of feral cats had the potential to range onto public elementary or preschool property, and 81.5% of those trapped in Richmond City could roam into public parks and community gardens, indicating a risk of zoonotic disease transmission.
Contamination & food safetyHealthCommunityContaminants in Urban Soils: Bioavailability and Transfer
2017Dorothy Menefee, Ganga M. Hettiarachchi · · United States
Soil contamination with potentially toxic trace elements and anthropogenic organic pollutants is a widespread problem in urban areas worldwide. While urban agriculture increases food security, potential risks exist without knowledge of urban soil contamination. Lead (Pb) contamination is a widespread and common urban soil issue associated with human health risks, with almost half of US EPA Superfund sites having Pb contamination. Cadmium (Cd) is also a widespread urban soil pollutant, largely from industrial activities like plastic manufacturing, battery disposal, and metal ore processing. The bioavailability of soil Pb to humans is unusually low and generally tied to Pb speciation.
Contamination & food safetyHealthCommunityAntimony Accumulation Risk in Lettuce Grown in Brazilian Urban Gardens
2016Silvia Mancarella, Giuseppina Pennisi, Daniela Gasperi, L. Marchetti, V. Loges, Francesco Orsini, Giorgio Gianquinto, Gilmo Vianello, Livia Vittori Antisari · Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) · Brazil (Recife)
This study assessed heavy metal accumulation in an urban garden in Recife, Brazil, at varying distances from a high-traffic road. It found that increasing distance from the street decreased the accumulation of many potentially toxic elements. However, the study revealed a greater human health danger associated with the accumulation of antimony in lettuce, while concentrations of other elements in leaf tissues were within reported thresholds.
Contamination & food safetyHealthCommunityMedia Frames and Shifting Places of Environmental (In)Justice: A Qualitative Historical Geographic Information System Method
2016Bethany B. Cutts, Danqi Fang, Kaitlyn Hornik, Jonathan London, Kirsten Schwarz, Mary L. Cadenasso · Environmental Justice · United States (California)
This study introduced a Qualitative Historical Geographic Information System (QHGIS) method to investigate how newspapers reflect changing meanings of place in relation to environmental burden and benefit. Applying QHGIS to urban gardening and soil lead issues reported in Sacramento, California, the method revealed the distribution of public narratives of environmental concern across the city, the politics embedded in location names, place name-changes, and how locations serve as framing devices for environmental concerns.
Contamination & food safetyCommunityHealthPolicy