Research & reports

김태곤, 박문호, 허주녕 · 한국농촌경제연구원 기본연구보고서 · South Korea

This study aims to identify the current status and challenges of urban agriculture and propose solutions. Urban agriculture faces chronic problems including securing farming land due to rising land prices, management insecurity resulting from farmland diversion or lease, and increased production costs due to environmental regulations. These issues restrict the range of agricultural management.

Andrew Flachs · Electronic Green Journal · United States

This paper explores the social and cultural effects of urban gardening in the greater Cleveland area, noting that the social impact of community gardens is less studied than other benefits. The author's fieldwork found that many gardeners combine utilitarian functions with environmentalist ideology, contrary to some authors who claim that gardeners are preoccupied with economic impact, leading to a biased conclusion about motivations. The paper aims to convey the complexity of use, function, and intent in these communal spaces.

Megan Sheridan · University of Minnesota Digital Conservancy (University of Minnesota) · United States (Minneapolis)

This project aimed to facilitate the creation of a commercial urban farm in the Seward neighborhood of Minneapolis. Goals included developing a business plan for an economically viable urban farm. The project found that economic viability without foundation grants is challenging, and site control is key.

Lisen Hendeberg · · Sweden

This study compared Ebenezer Howard's garden city ideals with contemporary urban farming movements in Sweden through a literature review and analysis of three active movements. It found that when garden city ideas were implemented in Sweden between 1905 and 1930, much of the original ideological basis for self-sufficient small towns and collectively owned land was lost. While similarities exist in ideological starting points, their approaches to change differ.

Eva Collins, Kate Kearins · Academy of Management Learning and Education · New Zealand (Auckland)

A sustainability instructor took a graduate class to an eco-village near Auckland, New Zealand, where students observed off-grid homes and community gardens. While New Zealand students were inspired by the alternative lifestyle, two international students from China and Tajikistan expressed that this lifestyle was how they lived at home and they did not wish to live that way, preferring the New Zealand lifestyle. This indicates a limited appeal of the eco-village model to some international students.

Emma Schroeder, Krishna Ramanujan · · United States

In his 2010 interview with Emma Schroeder, Krishna Ramanujan shared his memories of the Eagle Heights Community Garden. Mr. Ramanujan discussed the ethnic diversity of the gardeners, the tensions between the Gardens and the University, and balancing graduate school while raising a young family in the Eagle Heights community. This interview was conducted for inclusion in a Master's thesis on the Eagle Heights Community Gardens.

Diana Lee-Smith, L. J. A. Mougeot, Michael Levenston, Peter Mann, Katherine Brown, Jerry Kaufman · Journal of Agriculture Food Systems and Community Development · Global

This reflection on the urban agriculture movement notes that 19th and early 20th-century urban reforms, including urban gardens, aimed to improve living conditions in industrial cities. However, these initiatives also shifted the burden of sustenance from industrialists and fair-wage policies onto urbanizing families, particularly women. Despite this, garden spaces provided nourishment and retreats in densely populated areas.

Laura Whitzling, Michelle M. Wander, Ellen Phillips · Journal of Agriculture Food Systems and Community Development · United States (Chicago)

This study profiled soil quality, including lead levels, in 10 Chicago community gardens, comparing raised beds to non-raised beds and adjacent bare soil. The overall mean soil lead level was 135 ppm (n=86) by EPA method, with a range of 10-889 ppm. While most gardens' lead levels were not a concern, higher lead in adjacent bare soil suggested contamination risk. Use of raised beds reduced lead levels, but further study is needed.

Mamadou Ndiaye, S. Niang, H.‐R. Pfeifer, Raffaele Peduzzi, Mauro Tonolla, Y Dieng · Irrigation and Drainage · Senegal

Lettuces grown at two urban agricultural sites (Pikine and Patte d'Oie) near Dakar, Senegal, and sold in local markets were tested for microbial contamination linked to irrigation water. Salmonella spp. positivity was 6% at Pikine and 7% at Patte d'Oie farm sites, with lettuces irrigated by shallow 'Ceanes' groundwater most contaminated at both sites (8%), compared to wastewater irrigation (4% at Pikine) and well water (5% at Patte d'Oie); at market, Salmonella was isolated at every marketplace surveyed, with higher rates around Patte d'Oie (9% at Grand Yoff, 11% at Dalifort) than around Pikine (4% at Zinc, 2% at Sham) or the control site Rufisque (2%), and lettuces washed with Ceanes water before sale were more contaminated than those rinsed with tap water. Reusing wastewater for irrigation is presented as an alternative to animal manure, with the microbial contamination risk significantly reducible by washing vegetables with tap water before sale.

G. M. Hettiarachchi, Sabine Martin, A. David Rae, Phillip P. Defoe, Dennis Presely, G. M. Pierzysnki · · United States

Using a newly established urban community garden in Kansas City as a case example, this study examines the challenges of converting brownfield sites — abandoned or underutilized properties where environmental concerns impede redevelopment — into community gardens. Soil at the site was found to contain mildly elevated levels of lead (Pb) and detectable levels of DDT/DDE (an organochlorine pesticide). Based on an evaluation of soil properties, safety and corrective measures were proposed and implemented to reduce both direct (soil-to-human) and indirect (soil-to-plant-to-human) exposure for gardeners and their children, and field test plots with three crop types showing different contaminant-uptake patterns were established to evaluate site-specific soil amendments for reducing lead bioavailability.

O. Muñiz, M. Ternero, Álvarez Montero, F. Martínez, T. Limeres, O. Jouber, M. Orphee, Julia Vidan Estevez, B. Calero, F. A. de Alcantara, Adriana María de Aguiar Accioly · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · Global

This paper situates its topic within the urban agriculture movement, which it describes as having successfully enabled low-input food production in cities, noting that organoponicos — plots focused on producing leafy vegetables and condiment crops in organic substrates — have driven up demand for organic material sources. The title indicates the study addresses the effect of using heavy-metal-contaminated compost on vegetable production, but the available abstract provides only this background context, with no results on contamination or crop impact stated.

Adam Shiloh Moates · Culture & Agriculture · Colombia

A case study of clasificadores (urban waste sorters) in Montevideo, Uruguay, focusing on the subset known as clasificadores criadores de cerdos (CCdCs) who raise hogs alongside recycling. CCdCs do not fit the standard urban agriculture model since they do not garden but instead feed collected organic refuse to hogs. Raising hogs in the irregular settlements where CCdCs live is illegal, and very little of the hog meat they produce is consumed by the CCdCs themselves; out-of-town hog farmers transport their "bootleg," trash-fed hogs to legitimate markets to close the legal loop for what remains a clandestine production system. Although clasificadores have recently organized cooperatives and a labor union, the hog-raising activity itself remains illegal and dependent on this informal, off-book market channel.

Cantor, Kelly-M · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Colombia (Bogotá)

This study analyzed urban agriculture practiced by forcibly displaced residents and by vulnerable populations living in poverty in southern Bogotá and the Soacha locality, Colombia, using a livelihoods approach and drawing on 20 local actors and public/private institutions that had run urban agriculture programs as its information source. It found that urban agriculture carries symbolic value as a livelihood and occupational alternative, framed around collective wellbeing beyond monetary value, and reflects a struggle by peasant identity to survive within city life—but concluded that it is not an integrally sustainable activity.

Cezary Kabała, T. Chodak, L. Szerszeń, Anna Karczewska, Katarzyna Szopka, Urszula Fratczak · Fresenius environmental bulletin · Poland (Wroclaw)

An analysis of 180 allotment garden soils in Wroclaw, Poland, found that concentrations of Cu, Pb, and Zn (12.5-659 mg Pb kg-1, 38.1-2103 mg Zn kg-1, 12.9-595 mg Cu kg-1) were influenced by industrial pollution sources, organic matter, pH, and macronutrients. Soils in gardens on former housing or industrial areas had significantly higher metal concentrations. Up to 35% of soils in the city zone were excessively contaminated, making them unsuitable for vegetable and fruit production and requiring reclamation.

M.R. Gorham, Tina M. Waliczek, Amy Snelgrove, Jayne M. Zajicek · HortTechnology · United States (Houston)

A pilot study in Houston, Texas, investigated the impact of 11 established community gardens on property crime numbers using 2005 crime data. Statistical comparisons between community garden areas and randomly selected city areas showed no statistically significant differences in the mean number of crime occurrences. The presence of a community garden was not found to be a predictor of a lower crime rate for a neighborhood.

Emma Schroeder, Julie Schneider · · United States (Eagle Heights)

Julie Schneider's 2009 interview discusses her five years at the Eagle Heights Community Garden. She described vegetables grown, organic gardening, rules and restrictions, and tensions with the university, as well as changes in the community gardens since the early 1990s. This interview was conducted for a Master's thesis on the Eagle Heights Community Gardens.

W.-L. Rao, Z.-K. Zhang, Runzhong Li · Plant Disease · China (Kunming)

In June 2007, sweet cherry trees with mottling and mosaic symptoms were observed in a private garden near Kunming, Yunnan Province, China. Twenty-four samples from sweet cherry, sour cherry, flowering cherry, and peach trees in private and community gardens were tested for eight viruses by RT-PCR. Cherry virus A (CVA) was detected in two symptomatic sweet cherry trees, marking the first report of CVA in sweet cherry in China.

Wendy Heiger‐Bernays, Alexa Fraser, Vaughn R. Burns, Kerry Diskin, David Pierotti, K Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · PubMed · United States

A study characterized urban community garden soils contaminated by timbers, specifically finding elevated levels of polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) treated lumber. Researchers determined the extent of contamination, designed a remediation plan, and assessed the safety of adding city compost as a soil amendment in Boston community gardens. Recommendations for healthful gardening practices were also provided.

Alec Thornton · Development in Practice · Fiji

This article examines the impact of Fiji's squatter-resettlement scheme on the livelihoods of 'farming squatters' engaged in urban agriculture. Interviews with key informants and squatter residents revealed contrasting attitudes and approaches, indicating that the scheme threatens these livelihoods. The article suggests a more participatory process to address the needs of 'farming squatters'.

W. Van Averbeke · Water SA · South Africa (Pretoria)

This study in five informal settlements of Atteridgeville, Pretoria, South Africa, used a pilot study, household survey, and multiple case studies to assess urban farming's contribution to food security and household income. While over half of households participated in urban farming, its contribution to total household income and food security was generally modest. Main constraints included lack of space and limited access to irrigation water.

Karin Ahrné, Jan Bengtsson, Thomas Elmqvist · PLoS ONE · Sweden (Stockholm)

This study investigated bumble bees in allotment gardens along an urbanization gradient from inner Stockholm to rural areas. Findings showed that bumble bee diversity decreased with increasing urbanization, from approximately eight species in rural areas to five to six species in urban allotment gardens. Higher variability in the abundance of certain species in the most urban areas suggested a potentially weaker reliability of the pollination ecosystem service in areas strongly influenced by human activity.

Clara Irazábal, Anita Punja · Journal of Urban Affairs · United States (Los Angeles)

This qualitative case study analyzes the destruction of the 14-acre South Central Farm in Los Angeles in July 2006, arguing it was a landscape of resistance against discriminatory legal and planning practices. The study contends that environmental justice and planning ethics provided a substantive rationale for the city to prevent its dismantling. This case highlights a failure in governance to protect community gardens threatened by dismantlement in capitalist societies.

Crispen Dirwai, P.M. Makonese, N. Mboto · Figshare · Zimbabwe (Harare)

This study investigated how urban poor (Mabvuku-Tafara) and urban rich (Mabelreign, Marlborough, Westgate) communities in Harare, Zimbabwe, addressed the food crisis between 2005 and 2008. Using a mainly qualitative methodology to compare urban agricultural activities, findings showed that the urban poor engaged in seasonal, often inorganic, less paying off-yard farming, exposed to nature's vagaries. In contrast, the urban rich practiced on-plot perennial, often organic, researched (including soil testing) farming with greenhouses, which yielded better returns.

Kwesi Acheampong, Amoako Mensah, Boatemaa Boateng · Zenodo (CERN European Organization for Nuclear Research) · Ghana

A survey conducted from January to March across five favelas in Accra, Ghana, investigated the impact of community gardening workshops on food security. While participants gained knowledge on sustainable gardening techniques, 45% of respondents still lacked access to necessary resources like seeds and tools. The study concluded that workshops improved awareness but further support is needed to address practical implementation barriers.

AÇIKSÖZ Sebahat · Tarım Bilimleri Dergisi · Turkey (Bartın)

This study investigated whether urban agriculture activities in Bartın, Turkey, could be organized as a cluster according to Cluster Growth Theory, and examined its cluster characteristics as part of the TR-26 Bartın Regional Development Project. While urban agriculture in Bartın was identified as having cluster characteristics and growth potential, the study found that a fundamental problem for its future development is weak coordination and cooperation among stakeholders. It proposes a model for urban agriculture activities for a "Bartın Urban Initiative" at the city level.