Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
45 results(1 / 2)
Mapping the InvisibleLandscape of Pesticides andAdjuvants in Peri-Urban Agricultural Waterways of the Megacity Shanghai
2026L Cao, Jingsheng Wang, Yanbin Zhao (1549129), Shuping Zheng, Ruike Pan, Ruiqi An (19738761), Xuhui Yue, Yifan Wang (380120), Jianan Li (290570), Yan Liu (25061), Jie Wang (16762), Peng Wang (34436), Yangmei Mo, Ning Pan (186987), H. Z. Shi, Jiayin Dai (218672), Kun Zhang (108291) · Figshare · China (Shanghai)
An integrated assessment of agrochemical contamination in Shanghai's peri-urban agricultural surface waters across 193 sites revealed exceptionally high chemical diversity and mixture complexity. 91 pesticides and 263 formulation adjuvants were widely detected, with adjuvants showing comparable detection frequencies and response intensities to pesticides, indicating they are a major, underappreciated component of agrochemical pollution. In vivo zebrafish embryo assays showed that representative pesticides and adjuvants induced adverse developmental effects at environmentally relevant concentrations, identifying peri-urban agriculture as a critical source of complex agrochemicals.
Contamination & food safetyPeri-urban agricultureHealthEarly Detection of Escherichia coli Producing Extended Spectrum Beta Lactamase (ESBL) in Cattle Farm Waste from Urban Jakarta
2026Aulia Maulida, Syafitri Jumianto, Riris Lindiawati Puspitasari, S.Si., M.Si · Prosiding Seminar Nasional Pemberdayaan Masyarakat (SENDAMAS) · Indonesia (Jakarta)
This study examined cattle manure from an urban farm in South Jakarta for the presence of Escherichia coli resistant to third-generation cephalosporins. Using total plate count, selective culture, Gram staining, and biochemical identification, presumptive ESBL-producing E. coli strains were detected. Bacterial growth on cefotaxime-supplemented media indicated phenotypic resistance, demonstrating that urban cattle manure may serve as a reservoir of antibiotic-resistant bacteria.
Contamination & food safetyHealthOrganic cycleUrban foraging behavior in public green spaces: a case study of Nanjing’s central urban area
2025Xiang Zhou, Nan Wang, Jiaying Shi, Michael Hensel · Humanities and Social Sciences Communications · China (Nanjing)
A study of urban foraging behavior in Nanjing's central urban area, China, revealed significant enthusiasm among residents, linking personal childhood experiences to their foraging motivations. However, environmental pollution was identified as a critical barrier to these activities.
Contamination & food safetyCommunityHealthFood educationBiodiversitySpider Webs as Biomonitoring Tool for Heavy Metal Pollution in Diverse Environments: A Study in Kochi City
2025M Mohan Joseph, Archana T. Anil · Environmental Quality Management · India (Kochi)
This study evaluated spider webs from Cyrtophora cicatrosa and Pholcus phalangioides as biomonitoring tools for heavy metal pollution in urban, industrial, and semi-urban/agricultural areas of Kochi city, India. Analysis of web samples revealed site-specific variations in Cr, Cu, Mn, Mo, Ni, Pb, Sn, and Zn concentrations, with high levels of Zn found in Eloor (7558 ppm) and Kizhakkambalam (4947.50 ppm). Zn and Sn were the dominant accumulated metals, indicating significant heavy metal contamination in these environments.
Contamination & food safetyHealthUrban–rural linkageIdentification of the pollution sources and hidden clustering patterns for potentially toxic elements in typical peri-urban agricultural soils in southern China
2025Haofan Xu, Peng Hu, Hailong Wang, Peter Croot, Zhiwen Li, Cheng Li, Shaowen Xie, Hongyi Zhou, Chaosheng Zhang · Environmental Pollution · China
This study in Gaoming county, China, integrated PMF and K-means clustering to identify sources and contamination patterns of 8 potentially toxic elements (PTEs) in peri-urban agricultural soils. Average concentrations of PTEs were reported, with PMF identifying geogenic, industrial/traffic-related, and agricultural sources. The highest PTE concentrations were found in urbanized zones, confirming significant human impact and underscoring the dual influences of agriculture and urbanization on PTE contamination.
Contamination & food safetyPeri-urban agricultureHealthHeavy metal contamination and remediation strategies in peri-urban agricultural soils
2025Laxman Barua, YOGITA ADHIKARI, Kuldeep Naik · International Journal of Agriculture and Nutrition · India (Prayagraj)
This research assessed heavy metal concentrations in agricultural soils near the Naini industrial area in Prayagraj, India, and evaluated remediation strategies. Lead and cadmium concentrations at 0.5 km from the industrial zone exceeded Indian permissible limits (Pb: 67.8 mg/kg vs 50 mg/kg; Cd: 6.4 mg/kg vs 5 mg/kg). A pot trial showed that Brassica juncea removed 34.7% of Pb and 41.2% of Cd, while lime + biochar reduced Pb by 52.4%. A combined approach reduced bioavailable Pb to below the permissible limit.
Contamination & food safetyPeri-urban agricultureHealthOrganic cycleIdentifying priority control factors for heavy metal pollution in urban agricultural soils of the Chengdu Plain: An integrated multi-model approach
2025M. J. Ni, Shuai Yan, Ting Li, Zijun Zhou, Xiaojing Liu, Shirong Zhang, Guiyin Wang, Xiaoxun Xu, Yulin Pu, Yongxia Jia, Lan Li · Ecotoxicology and Environmental Safety · China (Chengdu)
This study investigated heavy metal (HM) contamination in urban and peri-urban agricultural soils of the Chengdu Plain, China, using an integrated multi-model approach. Four major HM sources were identified, including natural (30.0%), mixed agricultural and transportation (29.5%), metal smelting (19.4%), and atmospheric deposition (21.1%). Risk assessments revealed that Cd and Hg posed the highest ecological risks, and human health risk assessment indicated unacceptable health risks for children, with non-carcinogenic and carcinogenic risk probabilities reaching 4% and 10% respectively.
Contamination & food safetyHealthUrban–rural linkageAssessment 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 & justiceThe Extraction and Characterization of Microplastics of Biocompost and Water Samples Collected from the Different Semi-Urban Agronurseries
2024Roopika Sivaraman, Haritha Thulaseedharan Nair, Sharmila Krishnan, Perumal Siddhuraju · Soil and Sediment Contamination An International Journal · India (Coimbatore)
This study analyzed biocompost and water samples from four agricultural nurseries in semi-urban Coimbatore, India, for microplastic contamination using density separation and ATR-FTIR. While physicochemical properties met Indian standards, microplastic fragments (85%) and fibers (15%) were found in two biocompost samples (BC-B and BC-C), identifying PMMA, PP, and EVA polymers. No microplastics were detected in samples BC-A and BC-D, but the findings suggest semi-urban agricultural gardening may contribute to microplastic accumulation in terrestrial environments, potentially harming soil and plant health.
Contamination & food safetyCompostOrganic cycleHealthPesticide residue and dietary intake risk of vegetables grown in Shanghai under modern urban agriculture in 2018–2021
2024Jinrong Tong, Dongsheng Feng, Xia Wang, Min Wang, Mei-Lian Chen, Yanfen Chen, Yingqing Ma, Bo Mei, R. Chen, Mengfeng Gao, Siwen Shen, Hongkang Wang, Weiyi Zhang · Heliyon · China (Shanghai)
A study investigated pesticide residues and dietary intake risk in 7028 vegetable samples grown under modern urban agriculture in Shanghai from 2018 to 2021, analyzing 68 types of pesticides. Pesticide residues were detected in 29.21% of samples, with 0.47% exceeding China's national maximum residue limits (MRLs). The target hazard quotient (THQ) and hazard index (HI) for detected pesticides were all less than 1, suggesting there may be no obvious health hazard for residents.
Contamination & food safetyHealthUrban–rural linkageInvestigating Heavy Metal Contamination Extent of Soil and Plant from Urban Gardens in Jinju
2023Myeong Seok Jeong, Mina Lee, Chaw Su Lwin, Kwon-Rae Kim · 한국토양비료학회지 · Korea (Jinju)
This study investigated heavy metal concentrations in soil and crop leaves from 23 urban gardens in Jinju, Korea, to assess suitability for cultivation. While average concentrations of As, Cd, Cr, Cu, Ni, Pb, and Zn generally did not exceed Korean guidelines, the Geoaccumulation Index indicated ongoing contamination by Cd, Cu, Pb, and Zn. A significant amount of Pb was introduced into some soils from the atmosphere, and continuous monitoring for heavy metals in urban garden soils is required for food safety.
Contamination & food safetyHealthCommunityOrganic cycleOccurrence and spatiotemporal distribution of PAHs and OPAHs in urban agricultural soils from Guangzhou City, China
2023Weisong Chen, Weixuan Xian, Guiying He, Zhongye Xue, Shaomin Li, Wenyan Li, Yongtao Li, Yulong Zhang, Xingjian Yang · Ecotoxicology and Environmental Safety · China (Guangzhou)
A study in seven districts of Guangzhou City, China, evaluated the large-scale occurrence and spatiotemporal distribution of 16 PAHs and 14 OPAHs in urban agricultural soils. Average concentrations of ΣPAHs and ΣOPAHs during the flood season (59.6 ± 31.1-213 ± 115.5 μg/kg) were significantly higher than during the dry season (42.1 ± 13.3-157.2 ± 98.2 μg/kg). Coal combustion and traffic emissions were identified as the dominant sources for these contaminants in both seasons.
Contamination & food safetyHealthClimate changeUrbanisation threats to dairy cattle health: Insights from Greater Bengaluru, India
2023MS Alam, Silpa Mullakkalparambil Velayudhan, Debpriyo Kumar Dey, Chiamaka Adilieme, Pradeep Kumar Malik, Raghavendra Bhatta, Sven König, Eva Schlecht · Tropical Animal Health and Production · India (Bengaluru)
A study in Greater Bengaluru, India, interviewed 151 dairy farmers and analyzed 97 forage samples from 10 lakes and vegetable leftovers to assess urbanization's impact on cattle health. While lake fodder was nutritionally high-quality, 43% of samples contained toxic heavy metals above critical levels. Logit models showed that insufficient drinking water and lake fodder negatively impacted cattle health, despite 60% of farmers believing their cows were healthy.
Contamination & food safetyHealthUrban–rural linkageFood lossInvestigation of Heavy Metals in the Urban Agricultural Soils Near Railway and Industrial Complex in Jinju, Gyeongsangnam-do
2022Myeong Suck Jeong, Mina Lee, Chaw Su Lwin, Kwon-Rae Kim · 한국토양비료학회지 · South Korea
This study investigated heavy metal contamination in urban agricultural soils near railway tracks and an industrial complex in Jinju, South Korea, to ensure food safety. While the average heavy metal values did not exceed soil contamination guidelines, some individual soil samples showed concentrations higher than the guidelines. Furthermore, the geoaccumulation index (Igeo) indicated that several soils were contaminated compared to background levels, with Cu, Pb, Zn, and Sb showing the highest contamination. Long-term monitoring of urban vegetable garden soils is recommended.
Contamination & food safetyHealthCommunityOrganic cycleSource 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 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 safetyHealthBiodiversityUrban 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 changeEconomicsTrinity assessment method applied to heavy-metal contamination in peri-urban soil–crop systems: A case study in northeast China
2021Xingjia Wang, Wenbo Li, Dongyan Wang, Songze Wu, Zhuoran Yan, Jiaqi Han · Ecological Indicators · China
A 'trinity' assessment method was developed to evaluate heavy-metal contamination in peri-urban soil–crop systems in Northeast China, covering total, available, and accumulated heavy metals. While traditional methods indicated less contamination, the trinity method revealed spatial clustering of heavy-metal contamination in cultivated lands caused by urbanization and industrialization, and a decreasing urban–rural trend in contaminated areas, particularly in transition zones.
Contamination & food safetyPeri-urban agricultureHealthHEAVY METALS CONTAMINATION IN SOILS AND LETTUCE, AND HEALTH RISK ASSESSMENT AT PERI-URBAN AREA IN HUE, VIETNAM
2020Mila Siti Fatimah, M.S Ir. Eko Hanudin, Ph. D. Toru Watanabe · · Vietnam
This study investigated heavy metal contamination in soils, vegetables, and irrigation water in peri-urban agricultural areas of Hue, Vietnam, from May 2018 to January 2019. Samples from three sites revealed that while irrigation water and agricultural soils were not seriously contaminated, 14% of vegetables were contaminated by Cr, 76% by Cd, and 47% by Pb. The consumption of vegetables was categorized as a tolerable health risk.
Contamination & food safetyHealthPeri-urban agricultureRole 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 linkageImpact 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 cycleImpact 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 safetyHealthImpact of Long-Term Application of Patranala Sewage on Carbon Sequestration and Heavy Metal Accumulation in Soils
2018M. L. Dotaniya, V. D. Meena, S. Rajendiran, M. Vassanda Coumar, Asha Sahu, J. K. Saha, S. Kundu, Hiranmoy Das, A. K. Patra · Journal of the Indian Society of Soil Science · India (Bhopal)
A case study in peri-urban agricultural lands near Patranala, Bhopal, India, investigated the impact of over 50 years of untreated sewage water irrigation on soil properties. Findings showed higher concentrations of heavy metals in surface soils of sewage-irrigated fields, posing a major concern. Conversely, soil microbial population, enzymatic activities, and organic carbon content were also higher, indicating enhanced carbon sequestration.
Contamination & food safetyPeri-urban agricultureHealthClimate changeOrganic cycle