Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
339 results(14 / 14)
ENVIRONMENTAL EPIDEMIOLOGY EVIDENCE AND RISK COMMUNICATION
2003Tanja Pless‐Mulloli, Karen L. Foster, J Bush · Epidemiology · United Kingdom (Newcastle upon Tyne)
Investigations in Newcastle upon Tyne, UK, analyzed the extent and consequences of disposing 2000 tons of incinerator ash on over forty allotments. Soil, egg, and vegetable samples (75 soil, 21 egg, 65 vegetable) revealed contamination of footpaths with dioxin/furan (max 9000 ng/kg I-TEQ) and high levels of copper, lead, and zinc. Mean dioxin/furan levels in soil were 38 ng/kg I-TEQ and in eggs were 16.4 ng/kg I-TEQ, indicating significant contamination and potential exposure pathways for allotment gardeners and children.
Contamination & food safetyHealthCommunityPolicyHeavy metal levels of pasture grasses in metropolitan area
2003G. B. Luilo, Othman C. Othman · Journal de Physique IV (Proceedings) · Tanzania (Dar es Salaam)
This study measured heavy metal levels (cadmium, manganese, lead, and zinc) in Cynodon grasses near roads in Dar es Salaam City, Tanzania. Mean levels of lead and zinc varied exponentially with distance from the road up to 15m and correlated with average daily traffic, suggesting vehicular sources. For public health reasons, it is recommended that pasture grasses in road vicinities not be used for foraging dairy cattle and goats.
Contamination & food safetyHealthEconomicsInfluence of urban wastewater on stream water quality and agriculture in and around Kumasi, Ghana
2003Bernard Keraita, Pay Drechsel, Philip Amoah · Environment and Urbanization · Ghana (Kumasi)
This study in Kumasi, Ghana, investigated the influence of urban wastewater on stream water quality and peri-urban agriculture through interviews and water quality assessments. It found that population increase and underinvestment in sanitation facilities led to large volumes of untreated wastewater entering streams. High levels of faecal coliform were recorded in the city's streams, downstream areas, and on vegetables sold in Kumasi’s markets due to contaminated wastewater.
Contamination & food safetyHealthPeri-urban agriculturePolicyUse of untreated wastewater in peri-urban agriculture in Pakistan: risks and opportunities
2002Jeroen H. J. Ensink, Wim van der Hoek, Yutaka Matsuno, Sarfraz Munir, Muhammad Rizwan Aslam · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Pakistan
The use of untreated wastewater for irrigation is widespread in Pakistan's peri-urban agriculture, driven by water scarcity and lack of treatment funds. This practice has led to an uncontrolled expansion of wastewater use. The paper emphasizes the need to document this practice to find improvement methods within the financial constraints of low-income countries.
Contamination & food safetyPeri-urban agricultureHealthEconomicsQuality assurance initiatives for peri-urban food production in India
2002Nigel Poole, DS Bhupal, Fiona Marshall, Dolf te Lintelo · · India
New knowledge is presented on the impacts of urban and peri-urban (UPU) environmental pollution on food safety attributes of vegetable marketing systems in India. Air pollution reduces crop yield and nutritional quality, and is a major source of particulate contaminants that accumulate at toxic levels in edible crops. The study explores the balance between public and private quality assurance initiatives and identifies wholesale markets as a potential entry point for quality assurance.
Contamination & food safetyHealthPeri-urban agriculturePolicyClimate changeUrban agriculture between allotment and market gardening: contributions to the sustainability of African and Asian cities
2002L.M. van den Berg · WIT transactions on ecology and the environment · Africa, Asia
Urban agriculture, despite severe competition for space, plays roles such as fresh food supply, leisure, supplementary income for the urban poor, and green space management. Case studies in Africa and Southeast Asia demonstrate the difficulty of maintaining these roles due to public health and environmental degradation concerns. Urban agricultural producers may rely on polluted streams for irrigation, cause soil erosion through inappropriate farming techniques, or poison surrounding residents with pesticides. The paper suggests that urban agriculture could be more beneficial to the urban system if treated by town planners as a normal urban function requiring both regulation and protection.
Contamination & food safetyEconomicsHealthOrganic cyclePolicySpectrophotometric determination of lead in the soil of allotment gardens in Lodz
2001B. Jankiewicz, B. Ptaszyński, Michael Wieczorek · Polish Journal of Environmental Studies · Poland (Lodz)
This study presents the results of lead determination in the soils of six allotment gardens located in various parts of Lodz. Lead was measured spectrophotometrically in the form of pink lead(II) dithizonate.
Contamination & food safetyHealthCommunitySpectrophotometric Determination of Cadmium (II) in Soil of Allotment Gardens in Łódź
2000B. Jankiewicz, B. Ptaszyński, Michael Wieczorek · Polish Journal of Environmental Studies · Poland (Łódź)
This study determined cadmium in the soil of six allotment gardens in Łódź, located in areas with different traffic patterns (city center and suburbs). Cadmium was detected in the form of cadmium (II) dithizonate using the extraction-spectrophotometric method. This research indicates the presence of cadmium contamination in urban allotment garden soils.
Contamination & food safetyHealthCommunityImpact sanitaire de l'utilisation d'eaux polluées en agriculture urbaine. Cas du maraîchage à Ouagadougou (Burkina Faso)
1997Guéladio Cissé · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · Burkina Faso (Ouagadougou)
This thesis investigates the sanitary risks of using polluted water for urban agriculture in Ouagadougou, Burkina Faso, where vegetables, including those eaten uncooked, are irrigated with such water. The study aims to assess diarrhoea incidence, parasitic infection prevalence, microbiological pollution levels in water, soil, and vegetables, and sociocultural factors. Initial findings indicate that peripheral sectors are more polluted than central ones, and exploited surfaces vary significantly by season. The abstract highlights potential sanitary risks due to pathogenic germs surviving in water, soil, and plants.
Contamination & food safetyHealthMetals in urban gardens ‐ effect of lime and sludge
1995James R. Preer, Ahmed N. Abdi, Harkewal S. Sekhon, George B. Murchison · Journal of Environmental Science and Health Part A Environmental Science and Engineering and Toxicology · Global
This study investigated cadmium (Cd) and zinc (Zn) concentrations in vegetables grown in community gardens on different urban soils. Vegetables from a low-pH urban soil without contamination history showed higher Cd and Zn levels than those from a reclaimed landfill with digested sewage sludge, and also higher than a low-metal, neutral-pH site. Liming on the low-pH site reduced Cd and Zn concentrations in beet, lettuce, radish, and Swiss chard leaves, reaching background levels after four years. The findings indicate that soil pH is more important than total soil Cd and Zn in determining vegetable metal availability.
Contamination & food safetyHealthCommunityOrganic cycleBestimmung des Gehaltes ausgewählter Lebensmittel an Blei, Cadmium, Kupfer, Zink und Eisen
1988M. Krelowska‐Kulas · Food / Nahrung · Poland (Kraków)
An investigation using atomic absorption spectroscopy in Kraków, Poland, found that vegetables from urban allotment gardens had average levels of lead, cadmium, copper, zinc, and iron several times higher than control samples from farms 100 km away. In some cases, maximum levels of certain elements approached the admissible limit. However, average levels of lead and cadmium in pigs and cattle showed no reason for objection.
Contamination & food safetyHealthCommunityCadmium and lead in soils and crops from allotment gardens in the Netherlands.
1987P. van Lune · Netherlands Journal of Agricultural Science · Netherlands
A study analyzed cadmium (Cd) and lead (Pb) in soils and crops from 57 allotment gardens in potentially contaminated areas of the Netherlands. The median Cd and Pb concentrations in the soil samples were found to be higher than those in soils used for arable farming and horticulture. However, Cd and Pb concentrations in the crops themselves were normal.
Contamination & food safetyHealthA study of common crop pests in allotment gardens around Leeds
1979Howard J. Atkinson, Naomi Gibson, Harry C. Evans · Plant Pathology · United Kingdom (Leeds)
A survey of 140 growers across 12 allotment sites around Leeds, UK, identified a wide range of crop pests, with brassicas, potatoes, and carrots being more frequently damaged. Soil samples from 33 plots at 10 established sites and 6 plots at 2 new sites revealed potentially damaging levels of pale potato cyst nematode in 21 and 1 plots, respectively. Widespread overwintering populations of carrot fly larvae and pupae were also found in soil samples from eight sites.
Contamination & food safetyCommunityBiodiversityHealthA study of soil contamination and plant lead uptake in Boston urban gardens
1979T. M. Spittler, William A. Feder · Communications in Soil Science and Plant Analysis · United States
This study demonstrated a serious problem of lead contamination in Boston's urban environment by analyzing about 900 soil samples from backyards, play areas, community gardens, and playgrounds using X-ray fluorescence spectroscopy. An average lead level of 800 ppm was found, traceable to the past widespread use of lead paint. Selected plant species grown in soils with lead levels ranging from 100–2000 ppm showed differing affinities for lead uptake, with fruits taking up less than roots and roots less than tops, indicating positive translocation of lead from soil into plant tissue.
Contamination & food safetyHealth