Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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32 results(1 / 2)
Urban agriculture in Dar es Salaam, Tanzania: A systematic review of practices, challenges and sustainability
2026hawamkwela@yahoo.com MKWELA · Social Sciences & Humanities Open · Tanzania (Dar es Salaam)
This systematic review analyzed 42 studies from 1990 to 2024, examining urban agriculture practices, scale, socio-economic contributions, health and environmental impacts, and governance constraints in Dar es Salaam, Tanzania. Urban agriculture involves 36,000–60,000 households cultivating 1,800–6,000 hectares annually, supplying 90% of city vegetables, providing 20–70% of household income, and employing over 100,000 people. However, 85–95% of farmers lack secure land tenure, 78% of vegetable samples exceed WHO E. coli limits, and 90% of produce is sold informally with high post-harvest losses of 20–40%.
Contamination & food safetyFood sovereignty & justiceEconomicsHealthPolicyUrban mushroom farming for future foods: safety considerations and nutritional benefits
2026Malsha Samarasiri, Wei Ning Chen · Sustainable Microbiology · Global
This review discusses advances in urban mushroom farming, its integration with computer-based technologies, safety considerations, and the potential of mushrooms and mycelium-based foods as future foods. Key safety considerations for urban mushroom farming systems include biological hazards, mycotoxins, heavy metal accumulation, and potential allergenicity. Macrofungal mycelium-based foods may be regarded as novel foods and require evaluation under novel food safety regulations.
Contamination & food safetyFood sovereignty & justiceHealthCommunityDigital agriculturePlastic debris facilitates the survival of multidrug-resistant bacterial pathogens in an urban agricultural environment
2026Michael J. Ormsby, Luke Woodford, James Joseph Mwesiga, Winnie Ernest, Dativa J. Shilla, Daniel Abel Shilla, Richard S. Quilliam · Environmental Pollution · Africa
This study investigated plastic debris as a reservoir for multidrug-resistant (MDR) enteric bacterial pathogens at two peri-urban agricultural sites in Dar es Salaam, Tanzania. Analysis of 140 environmental samples (soil, water, vegetation, plastic debris) showed higher concentrations of culturable pathogens on plastic debris, with presumptive E. coli loads of ~1 × 10^3 CFU per piece. Plastic debris harbored a greater proportion of MDR strains, including E. coli and K. pneumoniae resistant to critically important antimicrobials, indicating that plastic waste facilitates the survival of MDR pathogens and poses health risks.
Contamination & food safetyHealthFood sovereignty & justicePeri-urban agricultureEstablishing 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 & justiceThe Rise of Urban Agriculture and Its Implications for Food Systems
2025Godswill Ntsomboh Ntsefong · IntechOpen eBooks · Global
This chapter examines the global growth and implications of urban agriculture. While urban agriculture enhances food security, it also introduces food safety risks from contaminated soils and infrastructure gaps. Challenges related to heavy metals, waste, and inadequate land planning are evaluated, and barriers such as land access and limited training for producers persist.
Contamination & food safetyFood sovereignty & justiceCommunityHealthEconomicsPolicyClimate changeDistribuição Espacial de Chumbo em Mangifera indica e Syzygium malaccense em uma Cidade de Médio Porte, Colômbia
2025Christian Valderrama, Hernan Zarate · Ambiente & sociedade · Colombia (Neiva)
This research characterized the presence and spatial distribution of lead (Pb) concentrations in Mangifera indica and Syzygium malaccense fruit trees on public roads in Neiva, Colombia. Using a census, fruit sampling, and spatial interpolation methods, lead levels were detected in all samples. Five samples exceeded the permissible limit of 0.1 mg/kg, with higher concentrations observed in industrial areas.
Contamination & food safetyHealthFood sovereignty & justiceA comprehensive review of urban agriculture in a changing climate: Technological innovations and policy frameworks
2025Peng Gao, Shuochen Xiao, Fara Diva Mustapa · Climate Risk Management · Global
This comprehensive review synthesized research on urban and peri-urban agriculture (UPA) globally, specifically within the context of its advantages, challenges, and climate change mitigation and adaptation efforts, including technological innovations and policy frameworks. The review demonstrated UPA’s ability to advance social interactions, improve urban microclimates, mitigate the urban heat island phenomenon, and provide essential ecosystem services. However, UPA is limited by scarce land resources and soil contamination, along with water management challenges and regulatory frameworks.
Contamination & food safetyClimate changePolicyFood sovereignty & justiceDigital agricultureFarmer awareness of heavy metal contamination in urban roadside vegetables along the Accra–Tema motorway, Ghana
2025Ebenezer Boahen · Discover Agriculture · Ghana
This study assessed the awareness and practices of 50 purposively selected vegetable farmers along the Accra-Tema Motorway, Ghana, regarding heavy metal contamination from vehicular emissions and its potential health implications. Data were collected through structured questionnaires and one-on-one interviews. Results showed that 96% of the farmers were unaware of heavy metal contamination, though 80% expressed a willingness to discontinue farming near the motorway if they were informed of the risks. Farmers face challenges such as limited access to clean irrigation water and dependence on informal agricultural knowledge. The study highlights the urgent need for targeted educational interventions to raise awareness about the risks of heavy metal exposure and to encourage safer farming practices.
Contamination & food safetyHealthEconomicsFood sovereignty & justiceEnvironmental ethics under commercialization of urban agriculture
2025K I Safitri, Oekan S. Abdoellah, Budhi Gunawan, P Parikesit · Ethics in Science and Environmental Politics · Global
This qualitative study investigated the commercialization of urban agriculture and its influence on agricultural practices and environmental ethics, engaging 43 participants through observation, interviews, and documentation. Findings showed that global commercialization promotes policies for environmental sustainability, leading to aligned production methods. However, in local contexts, farmers cultivating sloped land without perennial crops often use artificial inputs and contaminated irrigation water, facing constraints from intermediaries.
Contamination & food safetyEconomicsPolicyClimate changeFood sovereignty & justiceAssessment of heavy metal pollution on agricultural land in Chengdu city under different anthropogenic pressures based on APCS-MLR modelling
2024Yizhou Peng, Grigorieva Iya Yu · Ecological Indicators · China (Chengdu)
This study assessed heavy metal pollution in rural, urban-rural interface, and urban agricultural lands in Chengdu, China. It found varying degrees of heavy metal pollution across all areas, with arsenic (As) and cadmium (Cd) being the most severe pollutants. Concentrations of As and Cd in soil samples exceeded risk thresholds, and these elements showed high spatial variability, indicating significant anthropogenic influence. Pollution sources included livestock manure, natural sources, agricultural activities, and industrial activities in urban areas.
Contamination & food safetyHealthUrban–rural linkageFood sovereignty & justicePRODUÇÃO DE PROTEÍNA ANIMAL EM ÁREA URBANA E PERIURBANA (AUP): VIABILIDADE E SEGURANÇA ALIMENTAR
2024José Luis Chaves, Alexandre Boleira Lopo, G. M. OLIVEIRA, J. F. ARAÚJO, Luciano Sérgio Ventin Bomfim, J. A. CASTRO · Editora Científica Digital eBooks · Global
This systematic review investigated the viability of animal production in urban and peri-urban agriculture as a tool for food security, using the PRISMA methodology. The review found that while this practice offers benefits like domestic food security and income generation, it also presents negative aspects such as odors, noise, and the transmission of zoonoses. Public policies are needed to regulate the activity and minimize health risks.
Contamination & food safetyPeri-urban agricultureFood sovereignty & justiceEconomicsPolicyA growing concern: investigating sustainable water quality and urban food production in Freetown, Sierra Leone
2024Lee D. Bryant, Roy Maconachie, Bastian Schnabel, Abubakarr Swaray, Howard Gigi, Solomon Gbanie, Kabba Haroun Bangura, Anthony Kamara, Prince Antwi-Agyei · Water Science & Technology Water Supply · Sierra Leone (Freetown)
This paper examined the environmental health status of three urban and peri-urban agriculture (UPA) sites in Freetown, Sierra Leone. Qualitative and quantitative data revealed heavy metal concentrations significantly exceeding regulatory limits in sweet potato leaves and arable soil. Additionally, soaring levels of faecal coliform bacteria were found in irrigation water, and crops were identified as hyperaccumulators for environmental contaminants.
Contamination & food safetyHealthPeri-urban agricultureFood sovereignty & justiceEconomicsA Comprehensive Review on Evolution, Challenges of Models, Opportunities in Urban Farming Practices in the World
2024Anushi Anushi, A. Krishnamoorthi, Jitendra Chaurasia, Bijay Kumar Baidya, Abhishek Singh, Sapna, Vijay Kumar, Anushka Singh · Journal of Scientific Research and Reports · Global
This review explores the historical evolution and diverse models of urban farming, highlighting their contributions to food security, environmental sustainability, and community resilience. Challenges faced by urban farmers include limited space, soil contamination, regulatory hurdles, and access to resources.
Contamination & food safetyCommunityFood sovereignty & justiceClimate changePolicyEconomicsAGRICULTURE URBAINE : POURVOYEUSE DE DENRÉES ALIMENTAIRES ET SOURCES DE NUISANCES SANITAIRES AU QUARTIER SODEPRA À KORHOGO (NORD DE LA CÔTE D’IVOIRE)
2023Moussa Coulibaly · International Journal for Advanced Studies and Research in Africa · Côte d'Ivoire (Korhogo)
This study in Logokaha, Korhogo, Côte d'Ivoire, aimed to show the impact of urban agriculture on food production and the health of farmers. Despite contributing to the empowerment of farmers, urban agriculture exposes them to health hazards. The methodology involved documentary research and field surveys.
Contamination & food safetyHealthFood sovereignty & justiceCommunityAGRICULTURE URBAINE: POURVOYEUSE DE DENREES ALIMENTAIRES ET SOURCES DE NUISANCES SANITAIRES AU QUARTIER SODEPRA A KORHOGO (NORD DE LA COTE DIVOIRE)
2023COULIBALY Moussa · International Journal of Advanced Research · Côte d'Ivoire (Korhogo)
This study in Korhogo, Côte d'Ivoire, surveyed 81 farmers to assess the impact of urban agriculture on food production and farmer health. It found that urban agriculture, predominantly practiced by women (85.19%) with no formal education (71.61%), involves the use of chemical fertilizers and pesticides with non-adherence to application intervals. A significant portion of farmers (59.26%) discard chemical packaging in the environment. Despite contributing to empowerment, this practice exposes farmers to health problems including fatigue (53.09%), injuries (25.92%), skin burns (11.11%), dry coughs/colds (32.10%), and diarrheal diseases (19.75%).
Contamination & food safetyHealthFood sovereignty & justiceEconomicsCommunityPotential And Need of Urban Horticulture for A Sustainable Future
2023Mansi I. Bhati and R.K. Dubey · Zenodo (CERN European Organization for Nuclear Research) · Global
Urban horticulture, a new concept for growing family-sufficient food in urban and peri-urban areas, is gaining importance. However, environmental challenges for urban farming in urban environments include soil contamination, micro-climate alteration and air pollution, and contaminated water resources. Appropriate guidelines for urban and peri-urban agricultural practices are required.
Contamination & food safetyDIYPeri-urban agricultureClimate changeFood sovereignty & justicePolitical Ecology of Urban Agricultural Pollution
2023Rajat Kumar · Ecology Economy and Society–the INSEE Journal · India (Delhi)
This paper investigates the toxicity in river water in the Yamuna khadar floodplains in Delhi, India, caused by pesticides and fertilizers used in agriculture. The study examines how this toxicity is perceived, discursively constructed, and dealt with by differently located stakeholders. It finds that stakeholders in the Yamuna khadar do not experience pollution as a homogeneous community, nor do they all perceive themselves as suffering from or contributing to the toxicity in a similar way.
Contamination & food safetyPolicyFood sovereignty & justiceSystematization of the Environmental Educational Experience: The Home/School Garden as a Strategy to Address Food Security in the Post-COVID-19 Confinement School
2022Claudia 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.
Contamination & food safetyFood educationFood sovereignty & justiceHealthCommunityAgricultura 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 cycleHealthComparison of metallic trace elements accumulation capacities in three market garden species, lettuce (Lactuva sativa L.), spinach (Spinacia oleracea L.) and amaranth (Amaranthus paniculatus L.), grown on agricultural sites in the city of Abidjan (Côte d’Ivoire)
2019Kouassi Joseph Kouakou, Ahoua Edmond Sika, Seu Jonathan Gogbeu, Koffi Bertin Yao, M. Bounakhla, Denézon Odette Dogbo, Yves‐Alain Bekro · · Africa
This study compared the accumulation potential of five trace metals (cadmium, copper, lead, zinc, and nickel) in lettuce, spinach, and amaranth grown at market gardening sites in Abidjan, Côte d’Ivoire. Using principal components analysis, it was found that lettuce had a greater capacity for accumulating these metals compared to spinach and amaranth. Amaranth and spinach from the three sites showed nearly identical metal accumulation capacities.
Contamination & food safetyHealthFood sovereignty & justiceMonitoring of heavy metal residues in cauliflower and their respective health hazards
2017Muhammad Asif Khan Rai Muhammad Amir · International Journal of Biosciences (IJB) · Pakistan (Faisalabad)
To investigate heavy metal residue levels in cauliflower grown in the peri-urban area of Faisalabad district, Pakistan, 30 cauliflower samples were collected from 10 selected farmers. Analysis revealed variable heavy metal residue levels (nickel, lead, zinc, copper, arsenic, and mercury) in the samples, indicating that the cauliflower was contaminated with multiple heavy metals. This contamination is attributed to the use of untreated sewage water for cultivation, which is the single largest contributor to heavy metal accumulation in cauliflower.
Contamination & food safetyHealthPeri-urban agricultureFood sovereignty & justiceEvaluating peri-urban market gardening and shallow well quality for irrigation: a case study from Lagos, Nigeria
2016Isaiah Sewanu Akoteyon, Adeyemi Davidson Aromolaran · International Journal of Environment and Sustainable Development · Nigeria (Lagos)
This study evaluated peri-urban market gardening and shallow well water quality for irrigation in Lagos, Nigeria. It found that the mean values of bicarbonate, calcium, and pH in shallow wells exceeded detection levels in 66.7%, 60%, and 53.3% of samples, respectively. Salinity and sodium hazard patterns showed that approximately 66.7% of shallow wells had low salinity, 26.7% medium, and 6.7% high.
Contamination & food safetyPeri-urban agricultureHealthFood sovereignty & justiceWhat are the impacts of urban agriculture programs on food security and nutrition in low and middle income countries
2013Robert Garey Stewart, Marcel Korth, Laurenz Langer, Shannon Rafferty, N Rebelo Da Silva · · Global
This paper is a protocol for a systematic review on the impacts of urban agriculture programs on food security and nutrition in low and middle-income countries. It notes potential disadvantages of urban agriculture, including contamination, spread of diseases, depletion of water supplies, soil erosion, and health risks from pesticides. The review aims to identify, appraise, and synthesize evidence on these impacts comprehensively and transparently, given that the existing evidence-base is not well understood.
Contamination & food safetyFood sovereignty & justiceHealthClimate changeEconomicsBioaccessibility of heavy metals and risk assessment in urban gardens of Madrid
2013Marcelo Ortega Romero, Juan Mingot Marcilla, María Jesús García Martínez, Eduardo de Miguel, Miguel Izquierdo‐Díaz, Amaya Gómez · · Spain (Madrid)
This study evaluated the potential health risk from trace elements in urban garden soils in Madrid, Spain. Thirty-six composite soil samples were collected from the top 20 cm of six urban gardens, and concentrations of cobalt, chromium, copper, nickel, lead, and zinc were determined. The findings indicated that urban soils are significantly enriched in trace elements relative to background levels, suggesting a potential health risk.
Contamination & food safetyHealthCommunityFood sovereignty & justicePollution as a threat factor to urban food security in metropolitan Kano, Nigeria
2013Mansur Usman Dawaki, Abubakar U. Dikko, S. S. Noma, Umar Aliyu · Food and Energy Security · Nigeria
This study evaluated pollution risks to food security from urban agriculture in Kano, Nigeria, by sampling soil, water, and lettuce from two wastewater-irrigated sites (Challawa, Jakara) and a control site (Watari). Results showed all sites were contaminated with Cu, and the domestic wastewater site was slightly polluted with Pb and excessively polluted with Cd and Cr. Metal levels in irrigation waters exceeded recommended thresholds, and plants at the domestic wastewater site accumulated metal concentrations (Pb=26.21 mg/kg, Cd=1.03 mg/kg, Cr=28.63 mg/kg, Cu=2.66 mg/kg) that exceeded allowable limits in vegetables, indicating a human ingestion risk.
Contamination & food safetyHealthFood sovereignty & justice