Research & reports

Priyanie Amerasinghe, R. M. Bhardwaj, Christopher A. Scott, Kiran Jella · · India

This study analyzed the current status of wastewater generation, its uses, and livelihood benefits, particularly in agriculture, in India. It was based on national data and case studies from Ahmedabad, New Delhi, Hyderabad, Kanpur, and Kolkata. A lack of systematic data collection by municipalities makes it difficult to accurately assess wastewater generation or estimate the total urban area under wastewater irrigation.

Camilo Villagrán Oyarzún, Ken Yan Qiu Sun · Revista de Urbanismo · Chile (Santiago de Chile)

This 2013 study investigated the challenges of integrating urban agriculture into Communal Regulatory Plans in Santiago de Chile. Analyzing two case studies in different metropolitan communes, the research inferred the general state of urban agriculture's inclusion in urban planning. The findings implicitly suggest difficulties in its integration, highlighting the need for improved governance in urban planning to effectively incorporate urban agriculture.

Sheila Castillo, Curtis R. Winkle, Stephen Krauss, Amalia Turkewitz, Cristina L.M. Silva, Edie Heinemann · Journal of Agriculture Food Systems and Community Development · United States (Chicago)

This study identifies seven perceived barriers to urban and peri-urban agriculture in the greater Chicago metropolitan area through interviews with urban planners and farmers. All seven barriers involve unclear or agriculture-unfriendly regulations. Results suggest that urban and peri-urban farmers are commonly forced to operate within a legal limbo or petition for exceptions to current regulations.

Susana Olivares Reumont, Damarys García Céspedes, Lázaro Lima Cazorla, Israel Saborit Sánchez, Axel Llizo Casals, Pedro Pérez Álvarez · Revista Internacional de Contaminación Ambiental · Cuba (Havana)

This study investigated levels of Cu, Pb, Cd, and Zn in soils and vegetables from 17 urban agriculture farms around the "Calle 100" landfill in Havana, Cuba, during 2006-2007. Findings showed that 35% of soils exceeded typical Cuban agricultural ranges for Zn, and 52% for Pb. Critically, 23% of soils surpassed phytotoxic and international limit levels for Pb, and 12.5% of vegetable samples exceeded Cuban maximum permissible limits for Pb in food for human consumption. The results indicate a need for strict monitoring of horticultural crops in the area due to contamination.

Andrew Butt · Economic Papers A journal of applied economics and policy · Australia

This article reviews changes in farm output and structure in peri-urban regions around Australia's cities. It concludes that farming in these regions is changing differently from other agricultural regions, with productivity centered on a few high-value activities. The majority of peri-urban farming, while potentially providing landscape services, is unable to adjust to changing productivity regimes, creating vulnerabilities for these farming systems.

Samuel Henrique Damas Marinelo, Sandra María Fonseca da Costa, Leonardo Freire de Mello · Anais ENANPUR · Brazil (São Paulo)

In São José dos Campos, São Paulo, Brazil, residents of the Altos de Santana neighborhood maintain traditional peasant characteristics by cultivating urban gardens within a Permanent Protection Area of the Paraíba do Sul River. However, the current municipal administration plans to implement an urban park in this area, which will remove the gardens cultivated by these resident farmers. This intervention is expected to alter proposals for improving the quality of life for nearby residents concerning urban agriculture, potentially generating conflicts between stakeholders regarding land use.

Mekonnen Getahun, Yihenew G. Selassie · Journal of Agricultural Science · Ethiopia

A study investigated the extent of contamination of soil, water, and vegetables from wastewater used for irrigation in urban agriculture in Bahir Dar and Kombolcha, Ethiopia. Soil, water, and vegetable samples were collected and analyzed. While heavy metal concentrations in soil were within permissible levels, wastewater samples showed high nitrate and phosphate levels, and boron concentrations in Borkena River and Lake Tana exceeded permissible limits for irrigation. Wastewater drained to Lake Tana exhibited high turbidity and very high BOD, and lettuce and Swiss chard accumulated higher levels of iron, manganese, and zinc.

Lindsey Sarann Hallock · · Global

This paper examines the rise of vertical farms, arguing that they advance the corporate food regime and promote urban elite consumption. It differentiates vertical farms as local food projects that reproduce the capitalist industrial system rather than challenging it, facilitated by devalued built environments and labor surplus in neoliberal cities. The study concludes that these farms reproduce troubling trends in the corporate food regime, signifying capital's ability to standardize food cultivation and incorporate it into factory-like production systems.

WU De-hu · Anhui nongye kexue · China (Zhengzhou)

This study elaborated on the significance of developing characteristic agriculture in China's Central Economic Zone, using Zhengzhou urban agriculture as an example. It identified existing problems in urban agriculture development, including understanding deviation, extensive development, market confusion, short industrial chains, low specialization, and harsh environments. The research proposed countermeasures such as strengthening government macro-control, perfecting compensation mechanisms, and promoting scientific innovation and industrialization.

Doreen Atkinson · African Journal of Range and Forage Science · South Africa

This paper critiques the assertion that commercialization of smallholder agriculture poses dangers for sustainable rangeland management in South Africa. It argues that a range of policy options are required, including commercialization and subsistence farming, large-scale and smallholder farming, various land tenure options, rural and peri-urban farming, and part-time farming. The case of municipal commonage land is used to demonstrate the effectiveness of flexible policy options regarding land ownership, farming scale, and the social nature of farming, but it is noted that effective institutional development is a key requirement in all cases.

Amanda Jessie Weaver · Digital Commons - DU (University of Denver) · United States (Colorado)

This project combined U.S. Agricultural Census data with a survey of local producers in Colorado's Front Range Urban Corridor to examine the competition between urban development and food production. The study found that urban development is increasingly encroaching on rich agricultural lands, which are also desirable for housing. Consequently, Colorado faces increasing competition for land, potentially driving local food prices up and displacing producers to peripheral areas or out of food production entirely.

Roseline J. Akinlade, Olubunmi Lawrence Balogun, Adekemi A. Obisesan, Akinlade, Roseline J., Balogun, Olubunmi L., Obisesan, Adekemi A. · AgEcon Search (University of Minnesota, USA) · Nigeria

This study analyzed the determinants of commercialization among 230 urban vegetable farmers in Oyo and Lagos states, southwest Nigeria, using primary survey data and a Tobit model. It found that farmers' participation in domestic and regional markets remains low due to various constraints, notably poor market access. The average farm size was 0.05ha, and the average market participation index was 0.73. Factors influencing commercialization included age, farm size, association membership, education, distance to market, and input costs. The study concluded that social capital significantly affects market participation, and recommended proactive support from governments and NGOs to facilitate farmer organizations and market linkages.

Marc van lersel · · Global

Agriculture faces the 21st-century challenge of feeding a growing, urbanizing population while minimizing negative environmental impact. Urban farming has been presented as a potential solution to perceived problems with conventional agricultural production, but its effectiveness as a comprehensive solution is questioned.

김효정 · 한국여성학 · South Korea

Through in-depth interviews and participant observation research targeting women's activist organizations established since 2010, the characteristics of urban agriculture cases led or participated in by unmarried women in their 20s and 30s were analyzed. Unmarried women activists met the growing demand for safe and healthy food among single-person households through community farming in urban areas, practicing agriculture not only for food production but also as a lifestyle pursuit and recreational culture. However, their practices face limitations such as urban space constraints, difficulties for unmarried women to relocate to rural areas, excessive ecological value attribution, and a lack of solidarity with rural communities.

Sylvestre Dasylva · Journal of environmental science & engineering · Senegal (Dakar)

This paper discusses rainwater management in the "niayes" zone of Dakar, Senegal. This area is characterized by agricultural depressions with typically high groundwater levels, but a recent drop has turned some into runoff-gathering sites, used for urban agriculture among other services. However, two acute problems are observed: hydrological drying due to insufficient rainwater refill and urbanization of these bottom-lands. Furthermore, decreasing pluviometry exacerbates nuisances like floods and malaria.

Chiara Tornaghi · · United Kingdom

This academic-activist research on grassroots urban agriculture initiatives, focusing on four projects in Leeds, UK, found that local and regional institutions have limited ability to respond to these new demands. Planning traditions constrain institutions, failing to create flexible public spaces. Consequently, short-term solutions are found in "loose spaces" or ad-hoc negotiations, but these remain emergency or residual practices, highlighting challenges for urban public space management.

Shengzhong Chen · Guangdong nongye kexue · China (Guangzhou)

This study analyzed the development conditions, process, characteristics, and barriers of urban agriculture in Guangzhou City. It showed that while urban agriculture in Guangzhou has formed functions such as production, technology demonstration, ecological barriers, and leisure services, it faces internal and external development barriers including a decline in agriculture's status, expansion of urban land, labor shortages, and environmental pollution. These barriers hinder the healthy and sustainable development of urban agriculture.

윤희정, 조미경 · · Korea

This study aimed to critically consider and classify new paradigms for urban parks in the 21st century. While urban parks exhibit progressive aspects such as process, openness, productivity, and community space, they face significant criticism regarding the long development period for tree growth, covering open spaces, ecological limitations, economic validity, urban sprawl, underutilization as a low-carbon strategy, and negative consilience with contiguous fields. Based on these critical considerations, the study proposed urban agricultural parks as an alternative.

Johanna F. Lindahl · · Vietnam

The circulation of Japanese encephalitis virus (JEV) in pigs and mosquitoes was investigated around Can Tho city in Vietnam's Mekong Delta. Of 315 sows, 60% were JEV seropositive, and seropositivity was associated with more stillborn piglets in sows under 1.5 years old. Among 7885 mosquitoes collected in and around Can Tho city, seven pools collected near pigs tested positive for JEV, indicating co-circulation of JEV genotypes I and III. All 43 pigs sampled within Can Tho city were JEV seropositive, demonstrating that JEV can be a public health issue in urban areas.

W. H. Butler · Journal of Agriculture Food Systems and Community Development · United States

The reintroduction of livestock into urban areas in the United States creates tensions regarding public health and the urban-rural divide. This paper analyzes municipal codes to identify how communities regulate urban livestock through prohibitions of certain animals, zoning, site-level restrictions, and management requirements. The analysis demonstrates that while no two municipalities approach the urban livestock question identically, each seeks to place limits on raising livestock in urban areas using a combination of regulatory land use tools.

Hee-Jeong Yun, Mi-Kyoung Cho · Journal of Korean Society of Rural Planning · South Korea

This study critically considers the new paradigm of urban parks, noting that despite progress, urban parks face increased criticism. Criticisms include long development periods for tree growth, limitations in general and cultural ecology, and a lack of economic validity. The study proposes urban agricultural parks as an alternative, connecting them to sustainable regional development and low-carbon society.

Cécilia Claeys, Jean-Noël Consalès, Carole Barthélémy · · France (Marseille)

This paper re-examines the question of nature in the city through emerging environmental paradigms, using Marseille, a French Mediterranean city, as a case study. An interdisciplinary analysis combining sociology and geography revealed that new modes of urban and suburban nature management (e.g., National Park, greenways, community gardens) question spatial boundaries between wild and artificial. However, the uses of these spaces are still marked by persistent social segmentations.

Mary Caesar, Jonathan Crush, Trevor Hill · Scholars Commons (Wilfrid Laurier University) · South Africa (Msunduzi Municipality)

A study on food security in Msunduzi Municipality, South Africa, was part of AFSUN's baseline survey across eleven Southern African cities. The survey found that urban poor in Msunduzi are significantly worse off than those in Cape Town and Johannesburg, with one-third of households reporting frequent food shortages. Urban agriculture is not particularly significant in Msunduzi, and while supermarket supply chains dominate the food system, they do not meet the needs of the poor.

Mirella Cultrera, Maria Christina de Mello Amorozo, Fábio Cop Ferreira · SITIENTIBUS série Ciências Biológicas · Brazil (Mato Grosso)

An ethnobotanical study in five peripheral neighborhoods of Santo Antônio do Leverger, Mato Grosso, Brazil, surveyed 135 households and detailed 30 to characterize food plant cultivation. Ninety-seven species from 38 families were identified across homegardens, fields, and empty lots. While some species were common, the similarity between species/varieties across households was generally below 50%, and many had low frequency, revealing a vulnerability to species loss despite social network circulation.

Iwona Makuch · Soil Science Annual · Global

This study investigated the influence of intensive horticulture on lead content and its fractions in soil profiles from house gardens, allotment gardens, and arable fields. It was not determined that the manner of usage had any influence on total lead content or its distribution in soil profiles. However, the usage manner did influence the content and distribution of lead fraction III, which is connected with organic matter, with humus horizons of garden soils showing the highest content.