Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Utilisation de l'eau de pluie dans les jardins collectifs en France : enjeux, problématiques et premières analyses des pratiques Rainwater harvesting and use in community gardens in France: issues, risks and first practices analysis
2013Mucig Charlotte · · France
A survey on rainwater harvesting in community gardens in France indicates that while this practice has been ongoing for years, it is poorly documented and faces challenges in adapting to new French regulations. The findings highlight public health issues for both garden users and consumers of fruits and vegetables, as well as environmental and operational concerns.
Contamination & food safetyCommunityHealthPollution of Water, Soil and Vegetables: Challenges to Growing Cities of Bahir Dar and Kombolcha, Amhara Region, Ethiopia
2013Mekonnen Getahun, Yihenew G. Selassie · Journal of Agricultural Science · Ethiopia
A study investigated the extent of contamination of soil, water, and vegetables from wastewater used for irrigation in urban agriculture in Bahir Dar and Kombolcha, Ethiopia. Soil, water, and vegetable samples were collected and analyzed. While heavy metal concentrations in soil were within permissible levels, wastewater samples showed high nitrate and phosphate levels, and boron concentrations in Borkena River and Lake Tana exceeded permissible limits for irrigation. Wastewater drained to Lake Tana exhibited high turbidity and very high BOD, and lettuce and Swiss chard accumulated higher levels of iron, manganese, and zinc.
Contamination & food safetyHealthUrban–rural linkageEnvironmental and Social Sustainability of Urban And Periurban Agriculture (UPA) In Selected Towns Of Ethiopia
2013Teferi Daba Lemma, M. S. A. Rao · · Ethiopia
This study assessed the social and environmental sustainability of urban and periurban agriculture (UPA) in selected towns of Ethiopia, using primary data from 280 households via questionnaires and interviews. The findings indicate that the environmental and health aspects of UPA sustainability are compromised by extensive use of chemical inputs. Furthermore, UPA is inclined to be unsustainable from a social and political perspective.
Governance failureClimate changeHealthPolicyCommunityUser Satisfaction and Preference of the Hotel Roof Garden
2013Hee Soo Kim, Hyun‐Kyung Kang, Seung Jun Back · Journal of people, plants, and environment · South Korea (Seoul)
This research analyzed user satisfaction and preferences for hotel rooftop gardens in Seoul and Incheon, South Korea, to propose renovation plans. Customer satisfaction analysis showed that C Hotel and P Hotel in downtown Seoul had lower satisfaction regarding plant numbers and variety compared to H Hotel in Incheon. User preferences indicated a desire for multi-functional green spaces that host cultural and community events and offer physical exercise opportunities.
Limited or null effectCommunityBiodiversityHealthCHARACTERIZATION OF HEAVY METALS ATMOSPHERIC DEPOSITION FOR ASSESSMENT OF URBAN ENVIRONMENTAL QUALITY IN THE BOLOGNA CITY (ITALY)
2013Vittori Antisari, Livia; Dipartimento Di Scienze E Tecnologie Agroambientali, University Of Bologna, Bologna, Serena Carbone, Ferronato, Chiara; Dipartimento Di Scienze E Tecnologie Agroambientali, University Of Bologna, Bologna, Simoni, Andrea; Dipartimento Di Scienze E Tecnologie Agroambientali, University Of Bologna, Bologna, Vianello, Gilmo; Dipartimento Di Scienze E Tecnologie Agroambientali, University Of Bologna, Bologna · Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) · Italy (Bologna)
Concentrations of heavy metals (Ba, Cd, Co, Cr, Cu, Ni, Pb, V, Zn) were determined in topsoil, plants, and moss tissues in the suburban area of Bologna, Italy, due to an urban waste incinerator and other atmospheric emission sources. No correlation was found between metal content and the incinerator plant's distance. The pollution load index (PLI) for soil and moss indicated low environmental pollution, but the highest values in sites downwind of the incinerator and in a craft area indicated moderate pollution.
Contamination & food safetyHealthBiodiversityHeavy metals concentrations in selected areas used for urban agriculture in Dar es Salaam, Tanzania
2013Kibassa, Kimaro, Shemdoe · Scientific Research and Essays · Tanzania (Dar es Salaam)
A study assessing heavy metal concentrations in soils from selected urban agriculture areas in Dar es Salaam, Tanzania, found that zinc, chromium, cadmium, lead, and copper levels in all six investigated sites were within the Tanzania Bureau of Standards permissible limits. The highest values for copper, zinc, and lead were observed in Tazara Mchichani, potentially indicating pollution from surrounding manufacturing industries. Flooding did not appear to influence the distribution of these heavy metals.
Contamination & food safetyHealthUrban and peri-urban agricultural production along railway tracks: a case study from the Mumbai Metropolitan Region
2013Prem José Vazhacharickal, Martina Předotová, D. Chandrasekharam, Sharit K. Bhowmik, Buerkert, Andreas · Journal of Agriculture and Rural Development in the Tropics and Subtropics (University of Kassel) · India (Mumbai)
A study surveyed 38 railway gardeners to characterize urban and peri-urban agricultural production along railway tracks in the Mumbai Metropolitan Region. Irrigation water contained nutrients but also heavy metals such as lead, cadmium, and mercury, and pathogens like Escherichia coli. Heavy metal levels exceeded critical thresholds in surface soils for chromium, nickel, and strontium, and in produce for lead, cadmium, and strontium.
Contamination & food safetyCommunityFood sovereignty & justiceHealthGroundwater Vulnerability to Contaminated Irrigation Waters - A Case of Peri-Urban Agricultural Lands Around an Industrial District of Haryana, India
2013K.G. Rosin, Ravinder Kaur, Sushma Singh, Prabhat Kumar Singh, Digvijay Dubey · Procedia Environmental Sciences · India
A study was conducted in peri-urban agricultural sites around Faridabad, Haryana, India, to assess groundwater contamination and the contribution of salt/trace metal-laden irrigation waters. Mean EC, Cl, and F concentrations in root zone leachates were found to be far beyond permissible limits, and some trace metals posed a threat to deep percolating waters. However, due to existing cropping patterns and deeper water table depths, the groundwaters were not yet vulnerable to these salts/trace metals, and the presence of salts in the groundwaters was primarily geogenic.
Contamination & food safetyPeri-urban agricultureHealthUrban Agricultures: Spatial, Social and Environmental Transformations in Rome
2013Giovanni Attili · IRIS Research product catalog (Sapienza University of Rome) · Italy (Rome)
This study focused on community gardens in Rome, Italy, which largely result from informal appropriation practices. While these gardens can enhance environmental and social quality of life, they require institutional support and present a crucial challenge for urban planning. The study highlights the need to explore tensions between social practices and institutional powers, and questions how public policy can legitimize these self-guiding societal expressions.
Governance failureCommunityPolicyBiodiversityHealthThe Influence of Lead Hyperaccumulators on the Uptake of Lead by Vegetables
2013Laura Knapp, Jodi L. Sangster, Shannon L. Bartelt‐Hunt · International Journal for Service Learning in Engineering Humanitarian Engineering and Social Entrepreneurship · United States (Omaha NE)
This study investigated the influence of lead hyperaccumulating plants on lead uptake by vegetables in an urban community garden in Omaha, NE, a region with significant lead contamination. Tomatoes, carrots, and amaranth were grown alongside sunflowers and mustard greens (hyperaccumulators) in lead-contaminated soil. Data showed higher lead concentrations in the hyperaccumulators and suggested that their presence might have impacted the amount of lead available to surrounding vegetation. Previous work at the garden detected lead in produce, indicating a potential exposure pathway for humans.
Contamination & food safetyHealthCommunityField assessment of cadmium, lead and zinc contamination of soils and leaf vegetables under urban and peri-urban agriculture in northern Nigeria
2012G. N. Egwu, John O. Agbenin · Archives of Agronomy and Soil Science · Nigeria
A study in northern Nigeria assessed cadmium, lead, and zinc contamination in soils and leaf vegetables (amaranthus, lettuce) irrigated with untreated wastewater. Total cadmium and zinc concentrations in soils exceeded safe limits, and lead and cadmium in edible portions of amaranthus and lettuce exceeded safe limits for human consumption by 7–17 times. The permissible limit for lead established for agricultural lands may not be suitable to ensure produce safety in urban and peri-urban agriculture in Kano.
Contamination & food safetyHealthPeri-urban agriculturePhytodiversity for Metals in Plants Grown in Urban Agricultural Lands Irrigated with Untreated City Effluent
2012Ghulam Murtaza, Abdul Ghafoor, Muhammad Zia‐ur‐Rehman, Muḥammad Ṣābir, Asif Naeem · Communications in Soil Science and Plant Analysis · Global
This study investigated metal accumulation in plants grown in urban agricultural lands irrigated with untreated city effluent in developing countries. Sewage samples showed hazardous electrical conductivities, sodium adsorption ratios, and residual sodium carbonate for irrigation, although metal levels were near permissible limits. Critically, plants acquired metal contents that were greater than those found in the raw sewage or soils, indicating significant metal uptake.
Contamination & food safetyHealthStrucutural, Chemical and Bacteriological Characterization of the Rhizosphere of Zea Mays Grown in Metal-Contaminated Soil
2012Nahed N. Mahrous · The Journal of Pediatrics · Canada (Hamilton)
This project investigated metal, bacteria, and corn root interactions in metal-contaminated soils from Blackfrairs Community Garden and a Hamilton home. It found that bacterial numbers were lower than in uncontaminated soils, and bioavailable metal concentrations increased over time. High concentrations of metals were detected in grains, with copper, iron, and manganese accumulating in rhizospheres, and zinc distributed throughout root tissue in Blackfrairs plants.
Contamination & food safetyHealthCommunityBackyard chicken keeping in the Greater London Urban Area: welfare status, biosecurity and disease control issues
2012I. Karabozhilova, Barbara Wieland, Silvia Alonso, Laura Salonen, Barbara Häsler · British Poultry Science · United Kingdom (London)
A 2010 questionnaire survey of 30 backyard chicken flock-keepers in the Greater London Urban Area found that while chickens generally had conditions for natural behaviors, most owners did not comply with regulations on catering waste feeding. Disease prevention measures were rare, and a lack of avian and zoonotic disease knowledge among owners was observed, indicating implications for disease control.
Governance failureHealthPolicyCommunitySuccessful strategies and barriers to community gardening in metro Atlanta, Georgia
2012Julie L. Self, Amanda Wyatt, Aimee Webb Girard · The FASEB Journal · United States (Atlanta)
This research characterized community gardens (CGs) in two urban counties in Atlanta, Georgia, through semi-structured interviews with diverse garden leaders. The study identified primary barriers to creating and sustaining CGs as leadership constraints, reliable access to natural resources, and unclear regulations. It also found that CGs foster access to fresh food, knowledge, and community connections, with benefits varying by community.
Governance failureCommunityHealthPolicyHEAVY METAL POLLUTION AND URBAN AGRICULTURE IN MSIMBAZI RIVERVALLEY: HEALTH RISK AND PUBLIC AWARENESS
2012Lori Leonard, W. J. S. Mwegoha, Charles Kihampa · International Journal of Plant Animal and Environmental Sciences · Tanzania (Dar es Salaam)
This study investigated public awareness and health risks from heavy metal pollution in vegetables irrigated with Msimbazi River water in Dar es Salaam, Tanzania. Over 71% of 35 respondents used the river for irrigation, and high levels of chromium, lead, and copper were detected in popular vegetables. 69% of respondents were unaware of industrial pollution, and 63% were unaware of potential health effects. The study found that 95.6% of adults, 30.7% of children aged 6-12, and 12.5% of children aged 2-6 were at risk of lead carcinogenic effects, while 5% of children aged 2-6, 2.8% of children aged 6-12, and 1.2% of adults were at risk from carcinogenic cadmium effects.
Contamination & food safetyHealthCommunityEvaluation of Different Soil Media and Soil Ameliorants in Tomato (Lycopersicon esculentum Miller), Green Onion (Allium sativum) and Pechay (Brassica rapa L.)
2012Jenny Calabio, Ma. Luisa Albacete · WVSU Research Journal · Philippines (Iloilo City)
This study, conducted from July 2007 to July 2008 at the Urban Agriculture Demonstration Site in La Paz, Iloilo City, evaluated soil media and ameliorants for container-grown green onion, pechay, and tomato. Pure compost was found to be the best medium for increasing yields. However, the use of IMO and rice hull as soil ameliorants did not increase yields for the three tested vegetables, and rice hull generally reduced pechay yields.
Limited or null effectCompostDIYWelfareHealthEconomicsImpact of urban gardening in equatorial zone on soils and metal transfer to vegetables
2012Aubin Ondo, Pascale Prudent, C. Massiani, Menye Biyogo, Mariane Domeizel, Jacques Rabier, François Eba · Journal of the Serbian Chemical Society · Gabon (Libreville)
An assessment of urban agriculture's impact on soil properties and metal uptake by leafy vegetables in Libreville, Gabon, found strong soil acidification and decreased nutrient/metal concentrations due to agricultural practices. Metal transfer to plants was significant, with amaranth accumulating more metals than other vegetables, though cadmium and lead were not detectable in plant tissues. Amaranth and roselle preferentially concentrated metals in their leaves.
Contamination & food safetyOrganic cycleHealthCommunityPreliminary results of studies on radioisotopes activity concentrations in vicinity of cement works
2012Zbigniew Ziembik, Agnieszka Dołhańczuk-Śródka, Grzegorz Kusza · Proceedings of ECOpole · Poland
Soil samples were collected from the former "Piast" cement plant within Opole city borders, Poland, and nearby allotment gardens to study radioisotope activity concentrations. Naturally occurring radioisotopes and artificial Cs were found, with K and Cs showing the biggest radioactivity concentration. No significant differences in radionuclide activities were found between soil samples from the former industrial estate and the allotment gardens.
Contamination & food safetyHealthCommunityJapanese Encephalitis Virus in Pigs and Vectors in the Mekong Delta With Special Reference to Urban Farming
2012Johanna F. Lindahl · · Vietnam
The circulation of Japanese encephalitis virus (JEV) in pigs and mosquitoes was investigated around Can Tho city in Vietnam's Mekong Delta. Of 315 sows, 60% were JEV seropositive, and seropositivity was associated with more stillborn piglets in sows under 1.5 years old. Among 7885 mosquitoes collected in and around Can Tho city, seven pools collected near pigs tested positive for JEV, indicating co-circulation of JEV genotypes I and III. All 43 pigs sampled within Can Tho city were JEV seropositive, demonstrating that JEV can be a public health issue in urban areas.
Contamination & food safetyHealthUrban–rural linkageTRADITIONAL FARMING PRACTICES AND WASTEWATER IRRIGATION FARMING IN PERIURBAN, ZAMBIA
2012Evaristo Mwaba Kapungwe · Indonesian Journal of Biotechnology (Universitas Gadjah Mada) · Zambia
This study investigated farming practices related to heavy metal contaminated wastewater irrigated farming in two peri-urban areas of Zambia: New Farm in Mufulira and Chilumba Gardens in Kafue. Data was collected by observing crop cultivation activities at field plots along transects in stratified land zones. The results revealed that farming practices were characterized by traditional land management and multiple cropping systems, influenced by agro-ecological factors and the availability of heavy metal contaminated wastewater, which has the potential to contaminate soils and crops.
Contamination & food safetyPeri-urban agricultureOrganic cycleHealthAn Assessment of Soil Health and Productivity in Urban Gardens
2012Jennifer E. Reeves · OhioLink ETD Center (Ohio Library and Information Network) · United States (Cleveland, Ohio)
This two-year study in Cleveland, Ohio, USA, investigated urban soil health via nematode food web analysis and crop productivity via tomato fruit yield in urban gardens. Market gardens showed significantly more soil organic matter, nitrogen pools, and nematode presence than community gardens in both 2011 and 2012. However, despite these differences, there was no significant difference in the total yield of tomatoes per square meter between market and community garden types in either year. Gardens with raised beds had significantly more soil moisture content and soil organic matter than those with flat beds.
Limited or null effectCommunityEconomicsOrganic cycleHealthWelcoming animals back to the city: Navigating the tensions of urban livestock through municipal ordinances
2012W. H. Butler · Journal of Agriculture Food Systems and Community Development · United States
The reintroduction of livestock into urban areas in the United States creates tensions regarding public health and the urban-rural divide. This paper analyzes municipal codes to identify how communities regulate urban livestock through prohibitions of certain animals, zoning, site-level restrictions, and management requirements. The analysis demonstrates that while no two municipalities approach the urban livestock question identically, each seeks to place limits on raising livestock in urban areas using a combination of regulatory land use tools.
Governance failurePolicyHealthUrban–rural linkageFood sovereignty & justiceEvaluation on Actual Condition and Image Analysis of Roof Garden in Seoul, Korea
2012Minjae Kong, Kwang-Lai Park, Jin-Kwan Son, Ji-Hoon Shin · Journal of the Korea Society of Environmental Restoration Technology · South Korea (Seoul)
This study investigated the characteristics of rooftop gardens (farms) in 40 areas in Seoul, Korea. Cabbage, lettuce, pepper, and mini-tomatoes were the most preferred vegetables and fruits. Problems observed in rooftop gardens during cultivation included drainage systems, soil management, the cost or quality of planting mats, and diseases and insects.
Environmental trade-offsDIYCommunityHealthEconomicsFood and the Body Politic
2012Sarah Leonard · Dissent · United States
This article explores the perilous state of food and food politics in America and a wide range of responses on the Left. It describes how the existing farm bill led to a policy disaster, the relationship between Reagan-era deregulation and the obesity epidemic, and the labor exploitation endemic to the elite dining experience. The study reveals challenges in governance within the American food system and its socioeconomic impacts.
Governance failurePolicyFood sovereignty & justiceEconomicsHealth