Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
339 results(5 / 14)
Vertical Transfer of Bacteriological and Parasitological Pollutants from Irrigation Water to Soil and Crops
2022Jihan Faouzi, Imane Bedoui, Sanae Rezouki, Tarik Moubchir, Aimad Allali, Noureddine Eloutassi, Amal Lahkimi · Ecological Engineering & Environmental Technology · Morocco (Fez)
This study in Fez, Morocco, compared bacteriological and parasitological contamination in urban, peri-urban, and rural irrigation waters, and their transfer to soil and crops (cardoon and eggplant). Investigated microorganisms included total and thermotolerant coliforms, helminth eggs, Salmonella, and cholera vibrio. Results revealed contamination exceeding national and international standards for both types of coliforms in treated wastewater (TWW), wastewater (WW), Oued Fez water, and upstream well water in both winter and summer. This fecal contamination was found in soils and crops irrigated by urban and peri-urban water. Helminth eggs and cholera vibrio were also present in these waters, soils, and crops, with Salmonella detected in TWW in summer. Only the plot irrigated with Oued Bitit water in the rural zone met standards across all three levels of irrigated water, soil, and plants, and in both periods.
Contamination & food safetyHealthOrganic cyclePeri-urban agricultureEffects of Mixed Cropping of Garden Plants with Brassica parachinensis on Remediation of Cr-Polluted Soil in Community Garden
2022Shiyu Cui, Wenbin Liu, Hexian Jin, Yi Qiao, Ying Wang, Dan Liu · Atmosphere · Global
This study investigated the effects of mixed cropping garden plants (Festuca arundinacea, Ageratum conyzoides, Trifolium repens) with Brassica parachinensis on Cr-contaminated soil remediation. While mixed cropping with Trifolium repens resulted in the highest B. parachinensis yield and Cr content below standard in edible parts, mixed cropping with Ageratum conyzoides aggravated Cr pollution in edible parts of B. parachinensis, making it unsuitable for planting.
Contamination & food safetyCommunityHealthOrganic cycleIntegrating water, sediments, and land use analysis for pollution assessment in a countryside urban-farming watershed landscape in southern Brazil
2022Luciane Maria Vieira, Leonardo Antunes Pessoa, Vinícius Estevan Carvalho Pereira, Karen Silvério Góis, Edivando Vítor do Couto · International Journal of River Basin Management · Brazil
Water and sediment samples from four sites in a countryside urban-farming watershed landscape in Southern Brazil were analyzed for pollution assessment. All water samples were contaminated with faecal and total coliforms, indicating issues with treatment effectiveness. While pesticide concentrations in water were not significant, sediment copper concentrations were eight times higher than the Threshold Effect Level (TEL), with chromium and copper exceeding TEL at all sites. Sources for zinc, copper, nickel, cadmium, and chromium included plantations, forests, and domestic sewage discharges.
Contamination & food safetyHealthExercise, Urban Food Production, Preparation and Consumption: Implications, Benefits and Risks to Grow-Your-Own (GYO) Gardeners
2022Jonathan Stubberfield, Mads Troldborg, E. Louise Ander, N.M.J. Crout, Scott D. Young, Rupert Hough · Agronomy · United Kingdom
This study investigated the influence of gardening routines on health benefits and risks among 120 urban gardeners in the UK. Participants showed a correlation between autumn/winter gardening activity and fruit/vegetable consumption, with higher physical activity levels and lower BMI than average. However, while gardening offers health benefits, the health risks from gardening on soils mildly contaminated with cadmium and lead may outweigh these benefits, requiring formal consideration within a risk management framework.
Contamination & food safetyHealthDIYBiodiversityFirst report demonstrating the presence of Toxocara spp. eggs on vegetables grown in community gardens in Europe
2022Sara R. Healy, Eric R. Morgan, Joaquín M. Prada, Martha Betson · Food and Waterborne Parasitology · United Kingdom
This proof-of-concept study investigated the presence of Toxocara spp. eggs on 82 'ready-to-eat' vegetable samples (lettuce, spinach, spring onion, celery) from 16 community gardens in southern England. Two lettuce samples tested positive for Toxocara spp. eggs, showing an overall prevalence of 2.4% for vegetable samples and 6.5% specifically for lettuce. This study is the first to demonstrate Toxocara spp. eggs on vegetables grown in community gardens in the UK and Europe, highlighting biosecurity and zoonotic risks.
Contamination & food safetyCommunityHealthSource Apportionment of Heavy Metal Contamination in Urban-Agricultural-Aquacultural Soils near the Bohai Bay Coast, Using Land-Use Classification and Google Satellite Tracing
2022Ling Zeng, Shan Jiang, Linhai Jing, Yuan Xue · Remote Sensing · China
Heavy metal concentrations of Cd, As, Pb, Cu, Cr, and Hg were investigated in 86 soil samples from Jinzhou near China's Bohai Bay coast. The study showed that Cu and As contaminations in parts of this area were over the natural level but not polluted, while Cr contamination was omnipresent over the natural level and reached polluted levels in some parts. As and Cu contamination were linked to agricultural planting and aquacultural activities, and Cr contamination was potentially due to vehicle emissions and steel manufacturing or geochemical factories.
Contamination & food safetyHealthCharacterization of Wastewater Irrigated Soils of District Kota of Rajasthan
2022Subhash Aswal, Harshal Purohit, P. K. Gupta, K. K. Yadav, Laxman Jat, Shipra Jaiswal, R. A. Kaushik · International Journal of Plant & Soil Science · India (Kota)
A quarterly survey in Kota district, Rajasthan, India, characterized wastewater-irrigated soils by comparing them with tube well water-irrigated soils from ten urban sites. The study found decreased sand content, pH, and dehydrogenase activity, while porosity, EC, BOD, COD, OC, available-NPK, SO4, Cl, and heavy metals (Mn, Fe, Zn, Cu, Ni, Cd, Pb, Cr) increased. Some parameters exceeded Indian standard permission limits, indicating contamination, with highest values observed in summer.
Contamination & food safetyHealthPeri-urban agricultureLegacy Lead in Urban Garden Soils: Communicating Risk and Limiting Exposure
2022Anna Paltseva, Zhongqi Cheng, Murray B. McBride, Maha Deeb, Sara Perl Egendorf, Peter M. Groffman · Frontiers in Ecology and Evolution · Global
This synthesis paper summarizes current scientific knowledge on lead (Pb) contamination in urban garden soils and provides clear recommendations for assessing actual health risks and limiting exposure. Urban garden soils often contain elevated levels of Pb, mainly from legacy sources, which is a main barrier for urban gardening. Amendments are noted as unreliable for treating contaminated soils to reduce risk, as they do not always make contaminants less harmful.
Contamination & food safetyHealthOrganic cycleCommunityDevelopment of a Process for Domestic Wastewater Treatment Using Moringa oleifera for Pathogens and Antibiotic-Resistant Bacteria Inhibition under Tropical Conditions
2022Nini Sané, Malick Mbengué, Amandine Laffite, Serge Stoll, John Poté, Philippe Le Coustumer · Water · Global
This study developed a wastewater treatment plant prototype coupled with Moringa oleifera seeds to reduce fecal indicator bacteria and antibiotic-resistant bacteria in domestic wastewater. The prototype alone reduced bacteria by 99.34%. The addition of Moringa oleifera seeds achieved high removal rates for E. coli (36.6–78.8%), fecal coliform (28.3–84.6%), Vibrio cholera (35.3–95.6%), and total flora (32.1–92.4%). For antibiotic-resistant bacteria, removal rates were up to 98% for E. coli and fecal coliform, 100% for Vibrio cholera, and 91.96% for total flora.
Contamination & food safetyHealthOrganic cycleDAMPAK PERUBAHAN PENGGUNAAN LAHAN BAGI PERTANIAN PERKOTAAN DI KAPANEWON KASIHAN
2022Adam Abraham · Jurnal Riset Daerah · Indonesia
This study aimed to identify the impacts of land use change experienced by urban farmers in Kapanewon Kasihan, Indonesia. Using a deductive-qualitative approach, it was analyzed that urban development has both positive and negative impacts on farmers. The most significant negative impacts included pollution, decreased productivity, and the squeezing of urban agricultural land, which could lead to long-term environmental quality degradation and further spread of land use change.
Contamination & food safetyUrban–rural linkagePolicyEconomicsFarming Practices and Disease Prevalence among Urban Lowland Farmers in Cameroon, Central Africa
2022Annie Stéphanie Nana, Timo Falkenberg, Andrea Rechenburg, Annet Adong, Anne Ayo, Pierre Nbendah, Christian Borgemeister · Agriculture · Cameroon
This study investigated factors influencing farming practices and disease prevalence among 130 vegetable producers in the lowlands of Yaoundé, Cameroon, through a cross-sectional survey. Education level and farm size were positively associated with overall fertilizer use, while pesticide usage was positively associated with years cultivated but negatively with land ownership. Waterborne disease prevalence was linked to education level, and malaria prevalence to farmer gender. The location of cultivated areas significantly influenced reporting malaria and headaches, concluding that despite associated health risks, vegetable production is necessary for farmers’ livelihoods.
Contamination & food safetyHealthEconomicsPolicyRisk of Waterborne Parasitic Infection among Vegetables Producers in the City of Ouagadougou, Burkina Faso: An Attempt to Quantify Them Using the Quantitative Microbiological Risk Assessment Method
2022Noëllie W. Kpoda, Hamidatu S. Darimani, Adama Ouéda, Idrissa Ouédraogo, Gustave B. Kabré · Agricultural Sciences · Burkina Faso (Ouagadougou)
This study evaluated the risk of parasitic infection among vegetable producers in Ouagadougou, Burkina Faso, who use polluted water, employing a quantitative microbiological risk assessment method. Protozoa and helminths from 9 species were detected in irrigation water, with Ancylostoma sp. eggs being common and severe across all water types. Contamination risk was higher for groups using raw wastewater than for those using well water, and halved for those using treated wastewater; however, regardless of water type, gardeners had an approximate 9.83 × 10−1 pppy probability of Ancylostoma sp. infection.
Contamination & food safetyHealthClimate changeHealth Risk of Heavy Metals Related to Consumption of Vegetables in Areas of Industrial Impact in the Republic of Kazakhstan—Case Study for Oskemen
2022Laura Boluspayeva, Monika Jakubus, W. Spychalski, Akhan Abzhalelov, Yertas Bitmanov · International Journal of Environmental Research and Public Health · Kazakhstan (Oskemen)
This study investigated heavy metal contamination in soils and vegetables due to the metallurgic industry in industrial areas of Oskemen, Republic of Kazakhstan. The greatest amounts of metals were found in soils and vegetables from the industrial zone, with the lowest in the suburban zone. Lead concentrations exceeded WHO/FAO standards in all analyzed vegetable samples, leading to the conclusion that consumption of vegetables cultivated in industrial areas should be restricted due to health risks.
Contamination & food safetyHealthCommunityPolicyPer- and polyfluoroalkyl substances (PFAS) in commercial composts, garden soils, and potting mixes of Australia
2022Anithadevi Kenday Sivaram, Logeshwaran Panneerselvan, Aravind Surapaneni, Elliot Lee, Kurunthachalam Kannan, Mallavarapu Megharaj · Environmental Advances · Australia
This study assessed 19 commercially available composts, garden soils, and potting mixes in Australia for 38 per- and polyfluoroalkyl substances (PFAS). Total PFAS concentrations ranged from 1.26 to 11.84 µg kg−1 (dry weight), with total perfluorinated carboxylic acids (ƩPFCAs) being higher than perfluoroalkyl sulfonic acids (PFSAs). The total oxidizable precursor assay (TOPA) showed an increase in short-chain ƩPFCAs (0.48 to 7.63 µg kg−1) in composts and potting mixes, indicating transformation of PFCAs precursors. The measured concentrations of short-chain PFCAs in soil substrates have the potential to contribute to plant uptake and food chain transfer of PFAS to humans.
Contamination & food safetyHealthCompostFactors Influencing the Sustained Adoption of Innovative Techniques by Urban Farmers in Lubumbashi, Democratic Republic of Congo
2022Maurice Kesonga Nsele, Jules Nkulu Mwine Fyama, Kevin Maréchal, Thomas Dogot · Agriculture · Democratic Republic of Congo (Lubumbashi)
In urban agriculture in Lubumbashi, Democratic Republic of Congo, an innovative technology package was disseminated, but ten years later, farmers' daily income was less than USD 1.25, and critical exceedances of heavy metal content standards in crops were recorded. Survey data from 202 farmers and a Logit model identified factors influencing the sustained adoption of two innovations: motor pumps and integrated soil fertility management. Socio-demographic factors were not significant for motor pump adoption, and only mutual aid moderately influenced integrated soil fertility management. Economic factors like land tenure and income diversification were significant for motor pump adoption, but no economic factors were significant for integrated soil fertility management. Institutional factors such as access to credit and association membership were significant for the sustained adoption of both innovations.
Contamination & food safetyEconomicsPolicyHealthPollution in rainwater harvesting: A challenge for sustainability and resilience of urban agriculture
2021Yang Deng · Journal of Hazardous Materials Letters · Global
While rainwater harvesting (RWH) is considered a sustainable irrigation method for urban agriculture, contaminants in rainwater pose challenges to RWH practices due to potential threats to crop, soil, and human health. Based on literature data, principal pollutants such as particles, toxic metals like cadmium, copper, and zinc, synthetic organic chemicals like agrochemicals and polycyclic aromatic hydrocarbons, and waterborne pathogens were identified as likely exceeding irrigation quality criteria. This study identifies challenges, knowledge gaps, and research needs for RWH irrigation, offering a basis for technical strategies.
Contamination & food safetyHealthClimate changeOrganic cyclePathogen and heavy metal contamination in urban agroecosystems of northern Ghana: Influence of biochar application and wastewater irrigation
2021Isaac Asirifi, Korbinian Kaetzl, Steffen Werner, Courage Kosi Setsoafia Saba, Felix K. Abagale, Philip Amoah, Bernd Marschner · Journal of Environmental Quality · Ghana
A field experiment in northern Ghana assessed health risks from pathogen and heavy metal contamination in urban agriculture, evaluating rice husk biochar, N-P-K fertilizer, and their combinations with untreated wastewater or tap water irrigation. While heavy metals in irrigation water and soil were below FAO/WHO standards, wastewater irrigation caused significant E. coli, fecal coliform, and helminth egg contamination on red amaranth vegetables and in soil. Biochar application did not affect bacterial contamination.
Contamination & food safetyHealthOrganic cycleReviewing chemical and biological risks in urban agriculture: A comprehensive framework for a food safety assessment of city region food systems
2021Enrico Buscaroli, Ilaria Braschi, Chiara Cirillo, Agnès Fargue‐Lelièvre, Giuseppe Carlo Modarelli, Giuseppina Pennisi, Isabella Righini, Kathrin Specht, Francesco Orsini · Food Control · Global
This paper addresses the potential underestimation of food safety risks in urban agriculture (UA), which can lead to regulatory gaps, despite positive perceptions of UA. It reviews literature on UA food safety assessments, identifying indicators and developing a framework for evaluating food safety risks in UA initiatives. The framework uses business surveys and food analyses to calculate a food safety index for UA businesses and city regions.
Contamination & food safetyHealthPolicyDigital agricultureWater quality indicators of the Nima Creek, and potential for sustainable urban agriculture in Ghana
2021Shwan Mohammed, P. K. Nyade, Mohamad Abdulhamid, I. O. A. Hodgson · Water Science · Ghana (Accra)
This study assessed urban water quality parameters of the Nima Creek in Southeastern Accra, Ghana, sampling water from six locations. The results showed high enrichment of nutrients (ammonia, nitrate, phosphate) and elevated levels of BOD, COD, and grease at sites receiving solid and liquid wastes. Physicochemical parameters like conductivity, TSS, and TDS also exhibited elevated values, indicating significant contamination that poses challenges for sustainable urban agriculture.
Contamination & food safetyHealthPeri-urban agricultureQuantification and Analysis of Microplastics in Farmland Soils: Characterization, Sources, and Pathways
2021Hoda Fakour, Shang‐Lien Lo, Nathan Thadeo Yoashi, Angelbetter Marselian Massao, Nelson Naboth Lema, Fezile Bethusile Mkhontfo, Patrick Chris Jomalema, Nasra Shabani Jumanne, Bright Hubert Mbuya, James Travor Mtweve, Moslem Imani · Agriculture · Taiwan (Tainan)
A study in Tainan city farms, Taiwan, quantified and analyzed microplastics (MPs) in farmland soils. MPs were found in all soil samples at depths ranging from 12–117 items/m2. Farms adjacent to suburban roads had approximately three times more MPs than enclosed farms. Fragment and fibers were the main forms, with low-density polyethylene being the dominant polymer, originating from historical land use, plastic mulch, and fruit protection foams.
Contamination & food safetyHealthBiodiversityPotential Toxic Elements Accumulation in Several Food Species Grown in Urban and Rural Gardens Subjected to Different Conditions
2021Sabina Rossini Oliva, Rafael López Núñez · Agronomy · Spain
This study investigated potential toxic element contamination in food and soils from urban and rural gardens in Seville, Spain, including urban gardens in a mining area. Soils from mining gardens were the most contaminated. While arsenic, cadmium, and lead concentrations in studied vegetables did not exceed legal maximum levels, high levels of barium (up to 42 mg kg−1) and zinc (up to 123 mg kg−1) were found in leafy green vegetables like chard and lettuce, indicating a need for further study on associated human health risks.
Contamination & food safetyHealthUrban–rural linkageHEAVY METALS IN FOOD CROPS: IDEAL SOURCES AND ROLES OF URBAN AGRICULTURE IN FACILITATING THEIR CONSUMPTION- A REVIEW
2021Nazir Muhammad Abdullahi, Ernest Chukwusoro IGWE, Munir Abba Dandago, Naima Umar · FUDMA Journal of Sciences · Global
This review discusses heavy metal contamination in food crops, identifying wastewater irrigation, agrochemical abuse, contaminated fields, atmospheric deposition, and unethical mining as primary sources. Agricultural soil in urban and peri-urban areas is heavily contaminated due to anthropogenic activities, with wastewater irrigation intensifying this contamination. Heavy metals are transferred to food crops during production and subsequently to humans upon consumption, posing a detrimental risk.
Contamination & food safetyHealthUrban–rural linkageHeavy metals and metalloids concentrations across UK urban horticultural soils and the factors influencing their bioavailability to food crops
2021Marta Crispo, Miriam C. Dobson, Roscoe S. Blevins, William Meredith, Janice A. Lake, Jill L. Edmondson · Environmental Pollution · United Kingdom
Heavy metal (HM) and metalloid concentrations were assessed in 200 urban horticultural soils across ten UK cities. HM were found to be widespread, with most concentrations below UK soil screening values (C4SLs). However, 83% of lead (Pb) concentrations exceeded C4SLs, which is a significant concern. Bioavailable HM concentrations represented a small fraction (0.01–1.8%) of total concentrations, and black carbon (BC) and organic carbon (OC) were suggested to contribute to HM immobilization.
Contamination & food safetyHealthCommunityBiodiversityUrban wastewater for agriculture : farmers’ perspectives from peri-urban Bengaluru
2021Seema Purushothaman, Sheetal Patil, Raghvendra S. Vanjari, A. R. Shwetha · · India (Bengaluru)
A participatory assessment in Byramangala, Bengaluru, explored farmers' perspectives on using wastewater (domestic sewage with industrial effluents) for irrigation. The study found that farmers were adapting to a heavily polluted environment, which resulted in restricted crop choices, lower produce prices, health impacts, and socio-cultural consequences. Despite concerns about water quality, farmers prioritized health-imparting agriculture and were keen to continue farming, but their preference for treated wastewater was overshadowed by its potential diversion for urban use.
Contamination & food safetyPeri-urban agricultureHealthClimate changeEconomicsFirst report of Tomato brown rugose fruit virus infecting tomato in Florida, USA
2021K. K. Dey, Maria Velez-Climent, P. Soria, Özgur Batuman, Vessela Mavrodieva, Guo Wei, Jun Zhou, Scott Adkins, John D. McVay · New Disease Reports · United States (Florida)
In October 2019, Tomato brown rugose fruit virus (ToBRFV) was detected in six of eight symptomatic tomato plants from a 1.6 ha community garden in Alachua County, Florida. The plants also showed symptoms of Tomato yellow leaf curl virus (TYLCV), with three samples testing positive for TYLCV. This marks the first report of ToBRFV infecting tomatoes in Florida, USA.
Contamination & food safetyCommunityHealth