Research & reports

Florence Chimbwanda · Journals & Books Hosting (International Knowledge Sharing Platform) · Zimbabwe (Masvingo)

This study investigated participants' attitudes and perceptions toward urban gardening in Mucheke town, Masvingo, Zimbabwe, using questionnaires, focus group discussions, and field observations with a sample of 40 participants. It found that urban gardening is important for the community and income generation, with participants reporting benefits like additional income, family consumption, and socialization. However, participants identified challenges including theft, dilapidated canals, a single water point, and limited market access.

Yolanda Gil, David Kirkland, Rocco Sergi · Water science and technology library · Australia (Sydney)

This chapter outlines the process of developing and implementing a master plan for urban farming in Horsley Park, Western Sydney. The case study highlighted that the implementation of the master plan has a number of challenges, including legislative and regulatory processes, and environmental and social matters. This suggests difficulties in transitioning from planning to the reality of farming in the Sydney region.

Sarah Kumnig · WU Research · Austria (Vienna)

This paper analyzes the implications of neoliberal urban development for agricultural spaces and practices in Vienna, Austria, where agricultural areas face pressure from population growth and a construction boom. Using the Donaufeld district as a case study, the analysis reveals selective preservation and activation of specific urban agriculture types and the use of participatory politics in urban development projects. The study highlights the challenges faced by urban agriculture amidst competing interests in a rapidly developing city.

Runrid Fox-Kämper · · Global

This book provides insights and examples of how urban space is negotiated, describing urban gardens as "lived places" where social relations, meanings, and a sense of place are developed. To trigger social benefits, it is essential that these sites fulfill more functions than just food growing and leisure. Horticultural practices, such as using pesticides or fertilizers, have a strong influence on the ecological impact of urban gardening; although awareness among gardeners has increased due to training programs in recent decades, this impact persists.

P. Antwi Agyei, Jeroen H. J. Ensink · Journal of Science and Technology (Ghana) · Ghana (Accra)

A study in Accra, Ghana, from September 2012 to August 2013, analyzed 323 soil and irrigation water samples and 501 produce samples for E. coli, and interviewed 693 participants. It found irrigation water was significantly more contaminated than farm soil, and over 80% of produce samples were contaminated with E. coli, with street food salad being the most contaminated. Key risk factors included farm soil, wastewater use, and poor hygiene, while consumers did not prioritize health indicators despite high risk awareness.

Alexandra Rizhinashvili · Digital Library of the Belarusian State University (Belarusian State University) · Global

This study analyzed the key limnetic parameters of four small shallow lakes: two located in allotment garden areas and two in forest-covered areas. It found that lakes with largely unexploited catchments contain a "hidden" source of nutrient load, primarily phosphates. Furthermore, lakes with catchments occupied by allotment gardens exhibited intensive overgrowth by floating vegetation.

Godswill Azinwie Asongwe, Bernard Palmer Kfuban Yerima · Greener Journal of Soil Science and Plant Nutrition · Cameroon (Bamenda)

This study analyzed heavy metal levels (chromium, manganese, lead, cadmium) in 21 urban and peri-urban agricultural wetland soil samples in Bamenda municipality, Cameroon. Average concentrations were 35.73 mg/kg for chromium, 0.08 mg/kg for manganese, 30.64 mg/kg for lead, and 0.45 mg/kg for cadmium. These concentrations were generally lower than the maximum WHO permissible levels.

Cécile Faliès · Problèmes d Amérique latine · Chile (Santiago)

This article provides an overview of agriculture around Santiago, Chile, based on fieldwork conducted since 2005. Despite the presence of agriculture linked to Santiago and Valparaiso, and the emergence of some forms like organic farming, it is difficult to classify this as urban agriculture due to the peripheral location and limited number of plots. The study indicates that urban agriculture, as commonly defined, has a limited presence in the Santiago metropolitan area.

Michael Carolan · · Global

This chapter examines how gender, race, and ethnicity are theorized and studied within agri-food scholarship. It notes that Community Supported Agriculture (CSA) schemes and farmers' markets, even when intended for low-income minority groups, often serve affluent, educated European American consumers. Additionally, women in rural Ethiopia face significant problems in food security due to their social status and higher dependence on agriculture for survival compared to men.

J. Scott MacIvor, Laurence Packer · PLoS ONE · Global

This study modeled the occupancy probability of six solitary bee species using nest boxes set along an urbanization gradient over three consecutive years. Native M. pugnata showed decreased occupancy with increasing building footprint, and a similar but not significant pattern was found for native O. pumila. Conversely, introduced M. rotundata and M. centuncularis, along with native M. campanulae, exhibited increased occupancy with rising urbanization.

Elanna Nolan, Alan March · Australian Planner · Australia (Melbourne)

This paper examined why a proposed community garden project at Hardy Gallagher Reserve in Princes Hill, initiated by Yarra City Council in Melbourne, failed by April 2010 after its launch in October 2008. Using communicative planning theory, it argued that the planning process for the community garden was doomed to fail from the beginning, demonstrating a lack of consideration for appropriate participation.

Jennifer L. Barron · Local Environment · Global

This paper explored how neoliberal processes of privatization, state entrepreneurialism, and devolution intersect with community gardens. It argued that certain characteristics and orientations of gardens are more conducive to resisting neoliberalism. These include cultivating producer, citizen, and activist subjectivities, elevating the use value of shared lived space, advancing spatial justice through community access to non-privatized space, and promoting food justice through non-commodified means of obtaining food.

Ellen van Holstein · Environment and Planning A Economy and Space · Australia (Sydney)

Empirical research at three community gardens in Sydney, Australia, examined property practices such as transplanting, plotting, and fencing. The study found that community gardeners create overlapping understandings of common and private property, driven by contradictory motivations for community inclusion and personal interest protection. Feelings of ownership, while contributing to belonging, also legitimize defensive and exclusive spatial claims within these gardens.

Hardiyanto Hardiyanto, Constancio C. de Guzman · Indonesian Journal of Agricultural Science · Philippines (Metro Manila)

This study investigated the levels and distribution of lead (Pb) and cadmium (Cd) in white cabbage, soil, and irrigation water from urban agricultural sites in Las Piñas and Parañaque, Metro Manila, Philippines. Field areas were divided into three sections based on distance from the main road (0, 25, and 50 m), and metal contents were measured by Atomic Absorption Spectrophotometry. The average Pb content (1.09 µg g-1 dry weight) in white cabbage was highest immediately beside the main road, with a similar trend in soil. A negative relationship was found between distance from the main road and Pb and Cd contents in white cabbage and soil. While overall concentrations of Pb and Cd in white cabbage, soil, and irrigation water were within acceptable limits, further study on heavy metal contamination in crops, especially those grown along main roads, was suggested.

Alessandra Silva Araújo · URBANA Revista Eletrônica do Centro Interdisciplinar de Estudos sobre a Cidade · Portugal

This research compared factors leading to community garden initiatives in Porto, Portugal, and Belo Horizonte, Brazil, focusing on the influence of urban planning processes. It found differences in how urban planning in both cities incorporates urban agriculture practices. The connections between urban agriculture and urban planning, facilitated by environmental planning practices, were found to be incipient, hindering planning's goal of catalyzing a sustainable city.

Kafeel Ahmad, Zafar Iqbal Khan, Asma Ashfaq, Ameer Khan, Hazoor Ahmad Shad, Mujahid Sher, Zahoor-ul-Hassan Dogar, Ijaz Rasool Noorka, Sumaira Yasmin, Vincenzo Tufarelli, Eugenio Cazzato · The Philippine Agricultural Scientist · Pakistan

This study analyzed heavy metal and metalloid levels in soil and cabbage (Brassica oleracea) from two urban farming sites in Sargodha, Pakistan, irrigated with wastewater. Findings showed that mean concentrations of arsenic (As) and cadmium (Cd) in soil, and manganese (Mn), nickel (Ni), copper (Cu), zinc (Zn), molybdenum (Mo), cadmium (Cd), and lead (Pb) in cabbage, exceeded permissible limits at both sites. Significant differences were observed in metal and metalloid levels in vegetable samples between sites.

Noëllie W. Kpoda, Mariam Sou Dakouré, Boubacar Savadogo, Amadou H. Maïga, Jean-Noël Poda, G.B. Kabre · Journal of Water and Environment Technology · Burkina Faso (Ouagadougou)

This study in Ouagadougou, Burkina Faso, compared the parasitological characteristics of wastewater at a treatment plant's inlet and outlet, and in an open channel conveying treated wastewater to a garden site. Non-viable parasite cysts or eggs were found at the treatment plant, but viable parasite cysts and eggs were detected in the open channel. An epidemiological study demonstrated that open defecation by highly infected individuals within the garden site caused recontamination of the treated wastewater.

Bettina König, Ranka Junge, András Bittsánszky, Morris Villarroel, Tamás Kőmíves · Ecocycles · Global

A literature review was conducted on the social, environmental, and economic impacts of aquaponics. The technology has potential applications in various settings, including commercial or community-based urban food production, industrial-scale production, small-scale farming, and educational systems. However, it is concluded that due to the complexity within markets, value chains, communities, infrastructure, and policy settings, further research and data acquisition are needed to fully assess all sustainability aspects.

Katherine Alexandra Herrera Hernández, Yohanna Marcela Pinzón, Ruth Zamira Herrera Rincón · · Colombia (Bogotá)

This project aimed to contribute to the study of Urban Peri-urban Agriculture (UPA) in Bogotá by describing projects led by the José Celestino Mutis Botanical Garden from 2004 to 2016, analyzed from an environmental education perspective. Using a qualitative methodology, the study investigated fundamental elements in education-management development, such as participation, the construction of the concept of environment, and the strengths and weaknesses in achieving these projects within the framework of successive city governments during that period.

Prince Antwi-Agyei, Anne Peasey, Adam Biran, Jane Bruce, Jeroen H. J. Ensink · PLoS ONE · Ghana (Accra)

This study, conducted from September 2012 to August 2013 with 490 respondents in Accra, Ghana, assessed knowledge and awareness of wastewater use in urban agriculture. It found low awareness of irrigation water sources among consumers and street food vendors, and low health risk awareness among farmers, despite high awareness among salespersons and consumers. Crucially, consumers did not prioritize health indicators when purchasing produce, and farmers' health risk awareness did not influence their adoption of safer practices.

Emad Abdulrahman Al-Heety, Kadhim H. Yassin, Safa Abd-Alsalaam · Human and Ecological Risk Assessment An International Journal · Iraq (Baghdad)

This study evaluated the health risk of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn) in soils from 14 urban community gardens in Baghdad City, Iraq. The non-carcinogenic hazard index (HI) was below the threshold (HI < 1), indicating no non-carcinogenic hazard. However, the carcinogenic risk index (RI) for Cd, Cr, and Ni exceeded the unacceptable threshold (RI < 1 × 10−4), demonstrating a serious carcinogenic risk for children and adults in the study area.

LE Wynne, Dana Cordell, Joanne Chong, Becky L. Jacobs · UTS ePRESS (University of Technology Sydney) · Australia (Sydney)

This report, using Sydney as a case study, examines land-use planning on the urban fringe for peri-urban food production. It finds that for many cities, including Sydney, a large proportion of peri-urban food production has already been lost due to conversion to residential and infrastructure uses. The report reviews various planning responses to address threats to peri-urban agriculture.

Heather Ohly, Sarah Gentry, Rachel Wigglesworth, Alison Bethel, Rebecca Lovell, Ruth Garside · BMC Public Health · Global

A systematic review of 40 articles on school gardening programs found that quantitative research was generally of poor quality, with limited evidence for changes in fruit and vegetable intake based on self-report. Qualitative research, though of better quality, attributed a range of health and well-being impacts to school gardens, but more robust quantitative research is needed to support these findings.

Mujtaba Baqar, Nadia Jamil, Naveed Ahsan, Kiran Khanum, Abdul Qadir, Mariyam Zameer, Anam Khalid · Transylvanian Review · Pakistan (Lahore)

This case study investigated the impacts of heavy metals from wastewater irrigation on soil, groundwater, and leafy vegetables (Indian mustard, spinach, fodder) in the Charrar Drain catchment, Lahore, Pakistan. Samples were collected from seven sites. Drain water showed Cd, Cr, and Pb concentrations exceeding limits at most sites, and groundwater Cd concentrations also exceeded limits, though Cr and Pb were within permissible ranges. Soil samples contained Cd, Cr, and Pb, and leafy vegetables irrigated with wastewater showed varying heavy metal concentrations, indicating a heavy metal bioaccumulation issue that may exceed threshold limits.

Kirsten Schwarz, Bethany B. Cutts, Jonathan London, Mary L. Cadenasso · Sustainability · Global

This paper proposes reframing the issue of soil lead contamination and urban gardening in shrinking cities from a potential conflict to a potential solution. Many shrinking cities face high soil lead burdens from their industrial past and the historic use of lead-based paint and leaded gasoline, which is often seen as a barrier to urban agriculture. The paper argues that urban gardening can be a solution to the soil lead problem through soil management, including soil testing and the addition of amendments, and through social network and community building.