Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
12 results
Evaluation Methodologies for Circular Economy in Municipal Composting and Urban Agriculture: a Literature Review with Focus on Latin America
2025Sofía Aguado, Helena Cotler, Marta Astier, Alejandro Padilla‐Rivera · Circular Economy and Sustainability · Latin America
This literature review examined methodologies applicable to municipal composting systems linked to urban agricultural production, with a specific focus on the Latin American context. It revealed a lack of structured methodologies to assess the circularity of municipal organic waste management systems and their connection with urban agriculture, particularly in heterogeneous contexts like Latin American cities, despite numerous existing evaluation methods. Life Cycle Assessment (LCA) is commonly used but often prioritizes environmental impacts, neglecting social, economic, and circularity dimensions.
Methodological critiqueCompostOrganic cycleEconomicsClimate changeRénover Cleveland : démolition, racisme et agriculture urbaine dans l’Amérique abandonnée
2024Pierric Calenge, Maie Gérardot · Métropolitiques · United States (Cleveland)
The work by Max Rousseau and Vincent Béal illuminates the ambiguities of a policy that organizes urban decline and racial segregation in Cleveland. This policy promotes urban degrowth and racial segregation, balancing algorithmic management and urban greening. The study focuses on the Rust Belt region, which experiences de-urbanization marked by the subprime crisis, racism, and segregation.
Equity & displacementCommunityPolicyEconomicsUrban–rural linkageFood sovereignty & justiceHealthWelfareClimate changeBiodiversityFood educationElderlyFood lossOrganic cyclePollinatorsHeirloom & landraceFood miles & supply chainCSA & TeikeiPeri-urban agricultureDigital agricultureDIYCompostFood educationWelfareElderlyFood lossOrganic cycleCommunityBiodiversityPollinatorsPolicyHealthEconomicsHeirloom & landraceUrban–rural linkageFood miles & supply chainCSA & TeikeiPeri-urban agricultureClimate changeFood sovereignty & justiceDigital agricultureRemediation of Soils Contaminated by Timbers in Community Gardens
2024Wendy J. Heiger-Bernays, Alicia Fraser, Valerie Burns, Kerry Diskin, Diedre Pierotti, Kian Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · Scholarworks (University of Massachusetts Amherst) · United States (Boston)
This study identified the nature and extent of soil contamination by polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) pressure-treated lumber in a representative community garden in Boston. Elevated levels of PAHs and arsenic were present in the gardens studied, with these timbers serving as a continuous source of contaminants. This is the first study to investigate contaminants other than lead and evaluate the effect of adding city compost on select soil contaminants in urban garden soil.
Contamination & food safetyHealthCommunityCompostPlant growth and microbial responses from urban agriculture soils amended with excavated local sediments and municipal composts
2023Jordi Guimera Garcia, Natalie Bray, Yowhan Son, Aleah L. Butler-Jones, Sara Perl Egendorf, Jenny Kao‐Kniffin · Journal of Urban Ecology · United States (New York City)
In New York City, a study investigated plant growth (tomato, pepper, kale) in soils constructed from four municipal composts mixed with sediments from the NYC Clean Soil Bank, to assess the potential for safe urban agricultural soils. While Clean Soil Bank sediments enhanced plant growth when mixed with BRL compost, they also negatively impacted tomato aboveground biomass production by 29% in LES compost and tomato plant height by 18% in QBG compost, indicating variable effects depending on compost properties.
Contamination & food safetyCompostOrganic cycleHealthClimate changePhytoavailability of Lead for Vegetables in Urban Garden Soils
2021Chammi P. Attanayake, Ganga M. Hettiarachchi, Mónica Palomo, Gary M. Pierzynski, Blanca Calderón · ACS Agricultural Science & Technology · United States
The effect of limestone and composted manure on lead (Pb) in vegetables and Pb bioaccessibility was assessed in a contaminated urban garden (total Pb ~200 mg kg⁻¹). Amendments did not affect Pb in vegetables or Pb bioaccessibility. Peeling reduced Pb concentration in radish by half, and removing surface dust reduced Pb in leafy vegetables by 40-50%. Daily Pb intake from consuming lettuce and carrot/beetroot from this garden was approximately 1.5 times higher than the interim reference level proposed by the U.S. Food and Drug Administration.
Contamination & food safetyHealthCompostCommunityFrom urban waste to urban farmers: Can we close the agriculture loop within the city bounds?
2021Rafael Carvalho Machado, Sieglinde Kindl Da Cunha · Waste Management & Research The Journal for a Sustainable Circular Economy · Brazil (Curitiba)
This study investigated Curitiba, Brazil's Urban Agriculture Program (UAP) and its decentralized composting strategy, which aimed to close the agricultural loop within city bounds. Despite training 24 urban farmer communities in composting techniques, the program was unable to achieve this goal. The research, based on secondary data review, interviews, and participatory observation, identified cultural barriers and conflicts among actor roles within the UAP that hindered the adoption of composting practices.
Governance failureCompostCommunityOrganic cyclePolicyExcess phosphorus from compost applications in urban gardens creates potential pollution hotspots
2019Gaston E. Small, Paliza Shrestha, Geneviève S. Metson, Katherine Polsky, Ivan Jimenez, Adam D. Kay · Environmental Research Communications · United States
Survey data from 142 gardeners and urban farmers in the Twin Cities Metropolitan Area, USA, characterized phosphorus (P) and nitrogen (N) inputs and harvest, and measured soil P concentrations at a subset of sites. Median application rates were 300 kg P/ha and 1400 kg N/ha, with low nutrient use efficiencies (2.5% for P, 5.0% for N). Garden soils had a median Bray P value of 80 ppm, far exceeding recommended levels, indicating a buildup and potential loss of P and N. Urban gardens, though only 0.1% of land area, constitute one of the largest inputs of P to the watershed.
Environmental trade-offsCompostOrganic cycleClimate changePrompts to improve post-consumer waste composting behaviors in the SUB
2016Valerie Chiykowski, Guhan Chendurnathan, Jun S. Lee, Lius Daniel · cIRcle (University of British Columbia) · Canada
This project at the University of British Columbia's Student Union Building (SUB) aimed to reduce contamination in post-consumer organics bins using visual prompts. While the intervention successfully decreased both the percentage weight and level of contamination, the overall weight of compostable waste also decreased post-intervention. The study suggests considering confounding factors like a sustainability fair during baseline data collection and improved bins, and proposes an infrared sensor-based audio prompt system for future efforts.
Governance failureCompostOrganic cycleCommunitySustaining Sustainability: a Management Plan for ACRES Student Farm
2014Sarah Legg · Figshare · United States (Wyoming)
ACRES Student Farm, a University of Wyoming organization, has grown significantly over six years, providing local produce, CSA shares, composting, and educational opportunities. However, the farm suffers from continuous losses in efficiency and acquired knowledge due to the transient nature of its student management and workforce, leading to unsustainable internal functioning. This project aims to develop a management plan and handbook to address these issues and improve the farm's operational efficiency.
Governance failureCSA & TeikeiCompostFood educationCommunityAssessing and managing soil quality for urban agriculture in Ohio
2012Josh Beniston · The Knowledge Bank (The Ohio State University) · United States (Ohio)
An experiment on assessing and managing soil quality for urban agriculture was conducted during the 2011 and 2012 growing seasons on demolished vacant urban lots in Youngstown, Ohio. Soil compaction was identified as a primary constraint, with high bulk density values of 1.79 g cm⁻³ for in-ground plots and 1.55 g cm⁻³ for raised beds. Crop yield data from 2011 showed that both compost-amended and compost + biochar-amended plots had significantly greater crop yields than control plots, with compost + biochar plots achieving the highest harvest index values.
Contamination & food safetyOrganic cycleCompostHealthHow City Hall Can Foster the Urban Farming Revolution in Buffalo
2011Michael Raleigh · eCommons (Cornell University) · United States (Buffalo)
The City of Buffalo has made progress in accepting urban farming on vacant land, but remains unwilling to take risks in this area. Policies restrict farmers' access to land, long-term security, food diversity (including animals), and sales. To foster urban farming, the City should amend these policies to grant farmers more freedom and could promote farming through a city-wide composting program and a demolition policy requiring vacant lots to be seeded with clover.
Governance failurePolicyCommunityEconomicsCompostMinneapolis Community Gardens: A Study of Public Policies in Minneapolis and Hennepin County
2008Erin Foster West · · United States (Minneapolis)
This study explores the interaction between community gardens and public agencies in Minneapolis and Hennepin County, United States. It identifies that despite a large number of community gardens in the Twin Cities Metro Area, there is no comprehensive city policy for community gardening, making land acquisition difficult as vacant land becomes scarce. The research inventories public policies related to land use, water, and compost specific to community gardens, highlighting the need for public agencies to provide essential services.
Governance failureCommunityPolicyCompost