Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
319 results(7 / 13)
Farmers' Perception, Willingness and Capacity in Utilization of Household Sewage Sludge as Organic Resources for Peri-Urban Agriculture around Jos Nigeria
2019Cosmos C. Alamanjo, Abimbola O. Adepoju, H. Martin, R.N. Baines · Zenodo (CERN European Organization for Nuclear Research) · Nigeria (Jos)
This mixed-methods study investigated farmers' perceptions, willingness, and capacity to use household sewage sludge as organic resources for peri-urban agriculture around Jos, Nigeria. Farmers were found to use a complex mix of fertilizers and were keen to utilize household sewage sludge for soil fertility, though constrained by accessibility. A critical finding was that household sewage sludge observed in the field is heterogeneous due to its proximity to urban refuse disposal, raising concerns for possible cross-contamination of pollutants and indicating a lack of extension guidance.
Contamination & food safetyPeri-urban agricultureOrganic cycleCompostHealthGeospatial 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 safetyHealthCommunityPollutants in Urban Agriculture
2019Camille Dumat, Antoine Pierart, Muhammad Shahid, Sana Khalid · · Global
Urban agriculture, while a strategy for sustainable food production, faces a serious threat from natural and anthropogenic pollution sources in urban and peri-urban environments. These sources release hazardous organic and inorganic contaminants, leading to a high likelihood of human exposure. Consumption of vegetables grown on polluted urban soils or those that have intercepted metal-rich atmospheric particles represents a potential route of pollutant exposure and human health hazard.
Contamination & food safetyHealthPeri-urban agricultureUrban Allotment Gardens for the Biomonitoring of Atmospheric Trace Element Pollution
2019Miguel Izquierdo‐Díaz, Peter E. Holm, Fernando Barrio‐Parra, Eduardo De Miguel, Jonas Duus Stevens Lekfeldt, Jakob Magid · Journal of Environmental Quality · Global
This study evaluated air pollution in urban green areas using edible plants. Analysis of 36 unwashed leaf samples showed that plants exposed next to roads had higher contents of traffic-related elements, and outdoor samples were enriched in marine aerosol ions. Cadmium and lead concentrations did not exceed European legal maximum levels for vegetables, indicating their consumption would be safe.
Contamination & food safetyHealthCommunityThe potential for heavy metal pollution in crops from urban and peri urban horticultural farms in the Gaborone environs: a review
2019L.C. Obuseng · Botswana Journal of Agriculture and Applied Sciences · Botswana (Gaborone)
This review highlights the potential for heavy metal accumulation in soil and crops from urban and peri-urban agriculture (UPA) around Gaborone, Botswana, due to the intensive use of chemical fertilizers, pesticides, wastewater, sludges, and industrial effluents. A literature review showed that fertilizers contain heavy metals, and the use of treated or untreated sewage water by UPA farmers can lead to heavy metal accumulation in soil and crops, posing a danger to human health. Information on heavy metal accumulation in soils is limited in Botswana, despite high agrochemical use in UPA vegetable production.
Contamination & food safetyHealthPeri-urban agricultureOrganic cycleInfección por Angiostrongylus cantonensis (Nematoda: Metastrongylidae) en Rattus rattus (Rodentia: Muridae) en una localidad de La Habana, Cuba
2019Ariamys Companioni, Jennys Peraza, Zulema Menéndez Díaz, Aileen González, Ledy X López, Ana Elisa Rodriguez, Jorge Cantillo, Fidel Ángel Núñez · Dialnet (Universidad de la Rioja) · Cuba
A descriptive study in La Lisa Municipality, Havana, Cuba, examined 63 Rattus rattus rodents for Angiostrongylus cantonensis infection in an urban farm field. The study found that 46.03% of the captured rodents were infected with A. cantonensis, with infection rates increasing in adult individuals (59.46%) and during the rainy season (55.88%). This demonstrated the circulation of A. cantonensis in its definitive host in the area, indicating an increased risk of transmission to humans.
Contamination & food safetyHealthUrban–rural linkageFecal Sludge Derived Products as Fertilizer for Lettuce Cultivation in Urban Agriculture
2019Surendra K. Pradhan, Olufunke Cofie, Josiane Nikiema, Helvi Heinonen‐Tanski · Sustainability · Global
This research determined the fertilizer value of sawdust and fecal sludge (SDFS) pellets and compared their effect on lettuce cultivation with other fertilizers in a greenhouse and open field. SDFS pellets, with or without enrichments, resulted in higher saleable fresh weight lettuce yields than commercial compost, poultry manure, mineral fertilizer, or no fertilizer. Open field cultivation yielded more than greenhouse cultivation. While no helminth eggs were detected, some fecal coliforms were found in lettuces fertilized with almost all tested fertilizers, including NPK and the non-fertilized control.
Contamination & food safetyOrganic cycleHealthCompostPersistance de <i>E. coli</i>, des oeufs d’helminthes et des kystes de protozoaires contenus dans les eaux usées urbaines d’arrosage sur les cultures maraîchères à Dschang, Ouest-Cameroun
2019Honorine Ntangmo Tsafack, Émile Temgoua, Thomas Njiné · International Journal of Biological and Chemical Sciences · Cameroon
This in situ study in Dschang, West Cameroon, monitored the survival time of E. coli, parasite eggs, and cysts on lettuce, carrot, and eggplant irrigated with polluted urban wastewater for one week. Despite significant E. coli reductions (73-99% over seven days depending on crop and season), E. coli levels on lettuce and carrot remained above health thresholds (10^3 E. coli/g). Positive samples for eggs and cysts ranged from 0-25% on lettuce and carrot, and 0-8% on eggplant, posing a danger to consumers of raw vegetables.
Contamination & food safetyHealthComparison 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 & justiceRole of hand washing and water storage in copper tank on incidence of diarrhea
2019Mahantayya V Math, Yashoda R Kattimani, Manjusha M Padhye · Indian Journal of Community Medicine · India (Ahmadabad)
This study points out the impact of wastewater use in urban agriculture on the incidence of diarrhea in Ahmadabad, India. Vegetables grown with wastewater have an increased risk of internalization of food-borne bacteria such as E. coli and Salmonella into edible plant parts, posing a serious health risk. Contaminated water, soil, poor hand hygiene, and improper handling are sources of bacterial contamination for vegetables and fruits.
Contamination & food safetyHealthUrban–rural linkageHUBUNGAN ANTARA KUALITAS AIR DENGAN PREVALENSI ENDOPARASIT PADA SALURAN PENCERNAAN IKAN NILA (Oreochromis niloticus) DI KERAMBA JARING APUNG PROGRAM URBAN FARMING DI KOTA SURABAYA
2019Alfan Prianggara, Gunanti Mahasri, Abdul Manan · Journal of Aquaculture and Fish Health · Indonesia (Surabaya)
A survey in Surabaya, Indonesia, investigated water quality and endoparasite prevalence in Nile tilapia (Oreochromis niloticus) from urban farming floating cage programs. Water quality parameters were measured, and average endoparasite prevalence was 5.71% for Eimeria spp. and 8% for Acanthogyrus spp. The study found positive correlations between water clarity, ammonia, and DO with Eimeria spp. prevalence, and between temperature, pH, nitrate, and nitrite with Acanthogyrus spp. prevalence, indicating a link between water quality and parasite infection.
Contamination & food safetyHealthUrban–rural linkageTrace Element Uptake by Herbaceous Plants from the Soils at a Multiple Trace Element-Contaminated Site
2019Obinna Elijah Nworie, Junhao Qin, Chuxia Lin · Toxics · Global
This study investigated trace element uptake by wild herbaceous plants at a multiple trace element-contaminated site. It found significant variability in bioaccumulation and translocation factors among plant species, identifying some as hyperaccumulators for specific elements. The marked accumulation of trace elements in plant tissues suggests that the site may not be suitable for urban agricultural production.
Contamination & food safetyHealthOrganic cycleImpact of Wastewater-Irrigated Urban Agriculture on Diarrhea Incidence in Ahmedabad, India
2018Timo Falkenberg, Deepak Saxena · Indian Journal of Community Medicine · India (Ahmedabad)
A 12-month case-cohort study of 187 households in four communities of Ahmedabad, India, purposively selected by irrigation water type (groundwater, surface water, wastewater), with bimonthly self-reported health diaries and most-probable-number measurement of Escherichia coli in water. Mean E. coli concentrations per 100 mL were 3.04×10^4 (groundwater), 9.28×10^5 (surface water) and 4.02×10^9 (wastewater) — all exceeding international irrigation water standards. Diarrhoea incidence was 7.92 episodes per 1000 person-weeks in the groundwater area versus 13.1 (wastewater) and 13.4 (surface water), with a positive correlation between irrigation water quality and diarrhoea. Wastewater reuse is often promoted as a water-scarcity fix for urban agriculture; this study shows it carries a health cost borne by the farming households themselves.
Contamination & food safetyHealthOrganic cycleThe spatial and temporal variation of water quality at a community garden site in an urban setting: citizen science in action
2018Martin Dawson, Mike Hutchins, Nuria Bachiller‐Jareno, Steven Loiselle · Freshwater Science · United Kingdom (London)
A citizen-science study from 2014 to 2016 assessed water quality in a 5.6-ha urban community garden in southwestern London, using borehole water. Measurements of specific conductance and tryptophan-like fluorescence were taken over 28 months. The study found no evidence of external contamination sources or temporal changes in water quality. However, significant variations in water quality between boreholes were directly linked to on-site manure storage and use, and local geological conditions.
Contamination & food safetyCommunityHealthTrace Metal(oid) Accumulation in Edible Crops and Poplar Cuttings Grown on Dredged Sediment Enriched Soil
2018Mohamad Assad, Michel Chalot, Fabienne Tatin‐Froux, Valérie Bert, Julien Parelle · Journal of Environmental Quality · Global
This study investigated element transfer in edible crops (cucumber, pepper, cabbage, lettuce) and poplar (Skado cultivar) grown on soils contaminated with sediments dredged from water canals in the 1960s, aiming to develop a biomonitor. The results showed accumulation of cadmium (Cd) and zinc (Zn) in the edible parts of crops, particularly leafy vegetables, indicating that Cd could be ingested in amounts reaching the tolerable daily intake (TDI) in this context. No accumulation of lead (Pb) was detected.
Contamination & food safetyHealthSoil Properties on Farmers’ Fields Amended with Untreated Solid Urban Wastes in Ouagadougou Peri-urban Area, Burkina Faso
2018P.S. Bouda, Edmond Hien, A. Dioma, Hyacinthe Kambiré, Yacouba Maïga, Der Adolphe Somé, Sylvie Nazaret, A.S. Ouattara · DOAJ (DOAJ: Directory of Open Access Journals) · Burkina Faso
A study in Ouagadougou sub-urban agricultural fields, Burkina Faso, assessed the impact of using untreated Solid Urban Wastes (SUW) as agricultural fertilizers on soil properties and crop production. SUW amendment significantly increased pH, total C, N, P, and available P, and maize height and biomass yield were 124% and 164% higher in amended plots, respectively. However, trace metal elements (Cu, Zn, Pb, Ni, Cr) concentrations were higher in amended fields, indicating that urban waste carries contaminants posing public health risks.
Contamination & food safetyOrganic cycleHealthPeri-urban agricultureFrom field to plate: discussion on transfer of metals in food chain
2018Zane Vincēviča–Gaile, William Hogland, Māra Stapkēviča, Juris Burlakovs · Linnaeus Eco-Tech · Latvia
This study investigates the transfer of metallic elements in the soil-plant segment of the food chain through laboratory and field experiments. It also includes a quantitative analysis of food samples from Latvia, including fruits and vegetables from Riga city allotment gardens, to identify element composition and potential contamination risks from urban pollution. Results of experiments and analyses revealed the influence of factors such as seasonality, botanical origin, site-specific factors, agricultural practice, and food processing on element transfer.
Contamination & food safetyHealthCommunityManagement initiatives in support of the soil quality of urban allotment gardens: Examples from Nantes (France)
2018Cécile Le Guern, Liliane Jean‐Soro, Béatrice Bechet, Thierry Lebeau, Dorine Bouquet · Land Degradation and Development · France
Urban allotment gardens in Nantes, France, were found to have soil contamination, with lead (Pb) levels ranging from 100–400 mg kg−1, posing health risks. Local actors collaborated to characterize soil, evaluate sanitary risks, and discuss management options. The most frequent solution was replacing polluted soils with clean soils, while other strategies included on-site management of excavated soil, non-accumulative cropping, or changing land use.
Contamination & food safetyCommunityHealthOrganic cyclePráticas 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 linkageChanges in the sizes of agricultural areas and their agricultural and environmental functions within the territories of Cracow’s Mogiła and Wyciąże neighbourhoods
2018Piotr Krzyk, Bogusława Kwoczyńska · Problemy Drobnych Gospodarstw Rolnych / Problems of Small Agricultural Holdings · Poland (Cracow)
This study quantitatively assessed the conversion of agricultural land to investment purposes in Cracow's Mogiła and Wyciąże neighborhoods from 2010-2013, based on local plans. It also addressed soil quality, heavy metal content, and pH. Analysis of spatial management plans for these areas indicated a systematic decline in the share of biologically active areas.
Contamination & food safetyPeri-urban agriculturePolicyClimate changeEconomicsHealthImpact of wastewater-irrigation on in-household water contamination. A cohort study among urban farmers in Ahmedabad, India
2018Timo Falkenberg, Deepak Saxena, Thomas Kistemann · The Science of The Total Environment · India (Ahmedabad)
A cohort study investigated the contribution of wastewater irrigation to in-household water contamination among urban farming households in Ahmedabad, India, within the context of WASH (Water, Sanitation, Hygiene). Drinking water samples from 204 households were collected four times over 12 months, and E. coli was quantified. Significant positive differences in water quality between point-of-source and point-of-use samples were identified in 78% of households. During the monsoon, the peak of contamination, only 6% of households had access to safe drinking water at the point-of-use. Wastewater irrigation showed an adverse effect on in-household water contamination, with an effect size larger than the mitigation effect of access to sanitation or personal hygiene.
Contamination & food safetyHealthTotal and Bioaccessible Soil Arsenic and Lead Levels and Plant Uptake in Three Urban Community Gardens in Puerto Rico
2018John Misenheimer, Clay Nelson, Evelyn Huertas, Myriam Medina-Vera, Alex Prevatte, Karen D. Bradham · Geosciences · Puerto Rico
Total and bioaccessible arsenic (As) and lead (Pb) levels, and their uptake by 10 commonly grown garden plants, were examined in three urban community gardens in Puerto Rico. Total As ranged from 2 to 55 mg/kg and Pb from 19 to 172 mg/kg in soils. Leaves accumulated higher concentrations of As and Pb than edible flesh, with culantro leaves showing the highest concentrations (3.2 mg/kg dw As, 8.9 mg/kg dw Pb).
Contamination & food safetyCommunityHealthOrganic cycleA study on air quality and heavy metals content of urban food produced in a Mediterranean city (Barcelona)
2018Mireia Ercilla‐Montserrat, Pere Muñoz, J.I. Montero, Xavier Gabarrell, Joan Rieradevall · Journal of Cleaner Production · Spain (Barcelona)
This study measured heavy metal content in air and hydroponic lettuce leaves at four sites in Barcelona, including high-traffic areas, to assess potential contamination from atmospheric pollution. The results showed that heavy metal concentrations in lettuce leaves were below EU-legislated limits in all cases, and air concentrations were less than 50% of legislative limits. The study concluded that Barcelona's air heavy metal content is low and not a source of contamination for urban crops, even near high-traffic areas.
Contamination & food safetyHealthPeri-urban agricultureGlobal scale arsenic pollution : increase the scientific knowledge to reduce human exposure
2018Muhammad Shahid, Camille Dumat, Nabeel Khan Niazi, Sana Khalid, Natasha Natasha · VertigO · Global
Arsenic concentrations exceeding the World Health Organization's recommended limit (10 μg/L) have been frequently found in groundwater in several countries globally, exposing millions to arsenic. This study synthesizes recent interdisciplinary knowledge on arsenic, particularly for urban gardeners and farmers who may face contamination in well water or produced vegetables. Geogenic arsenic poses a major health threat in many countries, especially in Asia, and advice is proposed to avoid and reduce human exposure to arsenic in urban agriculture contexts.
Contamination & food safetyHealthZoonotic 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 safetyHealthCommunity