Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
19 results
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 agricultureThe 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 & 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 & 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 & justiceHealthCommunityMonitoring 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 & 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 changeEconomicsPopulation-dynamics focussed rapid rural mapping and characterisation of the peri-urban interface of Kampala, Uganda
2010Kohei Makita, Eric M. Fèvre, Charles Waiswa, Mark Bronsvoort, Mark C. Eisler, Susan C. Welburn · Land Use Policy · Uganda
This paper describes a spatial representation of the peri-urban interface (PUI) of Kampala, Uganda, and identifies socio-economic factors related to peri-urbanicity using rapid rural mapping. It notes that urban and peri-urban agriculture (UPA) in rapidly expanding cities carries public health risks, such as zoonotic disease transmission. The study provides a methodology for describing the PUI in developing countries.
Contamination & food safetyPeri-urban agricultureFood sovereignty & justiceHealthPolicyOpportunities and Challenges of Urban and Peri-Urban Agriculture in Niamey, Niger
2008Sophie Graefe, Eva Schlecht, Andreas Buerkert · Outlook on Agriculture · Niger (Niamey)
Semi-structured interviews with 130 households in Niamey, Niger, characterized urban and peri-urban agriculture (UPA) and assessed resource use. The study found high use of livestock manure and indiscriminate use of nutrient-loaded wastewater for irrigation, leading to significant nutrient surpluses in UPA gardens. Initial calculations suggested large gaseous emissions of nitrogenous compounds and and leaching of nitrogen, phosphorus, and potassium to groundwater.
Contamination & food safetyPeri-urban agricultureFood sovereignty & justiceHealthClimate changeEconomicsUsing on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana
2008Bernard Keraita, Pay Drechsel, Flemming Konradsen · Water Science & Technology · Ghana (Kumasi)
A study in Kumasi, Ghana, assessed the use of on-farm ponds to reduce microbial contamination in wastewater-contaminated irrigation water, analyzing over 300 samples. It found that while ponds are common, their potential for pathogen removal via sedimentation is not fully optimized. Helminth eggs reduced by about 70% with careful water collection, but thermotolerant coliforms took six days in the dry season to meet WHO guidelines, indicating suboptimal performance for some pathogens.
Contamination & food safetyHealthPeri-urban agricultureFood sovereignty & justice