Research & reports

Pushpawani Ramaloo, Chamhuri Siwar, Choong-Yeun Liong, Anizan Isahak · PLANNING MALAYSIA · Malaysia (Penang)

This study investigated the prospects of urban agriculture (UA) development in Penang state, Malaysia, from experts' perspectives using a SWOT analysis. Fifty-seven stakeholders were interviewed to identify and prioritize strategies for UA development. Strategic plans were prioritized across aspects such as legal framework, financial, infrastructure, land, water, environment and health, social, marketing, and research and development.

Joseph Chabi, Miracle C. Eziefule, Rebecca Pwalia, Joannitta Joannides, Dorothy Obuobi, Godwin Amlalo, Charlotte Addae, Alidu Iddrisu, Dominic Acquah-Baidoo, Samuel Akporh, Sampson Gbagba, Kwadwo K. Frempong, Melinda P. Hadi, Helen Pates Jamet, Samuel Dadzie · Advances in Entomology · Ghana

This study in Accra Metropolis, Ghana, compared Anopheles gambiae s.l. species composition and insecticide resistance between two vegetable-growing and two non-vegetable growing areas. All A. gambiae s.l. populations tested were resistant to five insecticides, with lower mortalities observed in vegetable-growing areas (e.g., 2.6% and 12.5% for deltamethrin) compared to non-vegetable areas (36.2% and 38.9%). Anopheles gambiae s.s. and Anopheles coluzzii were dominant in vegetable-growing areas. The findings indicate that urban agriculture contributes to the development of insecticide resistance, which needs consideration in vector control strategies.

Gaston E. Small, Paliza Shrestha, Adam D. Kay · International Journal of Design & Nature and Ecodynamics · Global

Dissolved phosphorus (PO4 3-) and nitrogen (NO3- & NH4+) losses in leachate from experimental raised-bed garden plots were measured. Plots receiving cow manure compost showed high PO4 3- concentrations (5-11 mg/L), while municipal organics compost plots had concentrations an order of magnitude lower (0.5-1.2 mg/L), and no-compost plots had 0.3 mg/L. Phosphorus lost through leachate and harvest accounted for only 1-10% of total applied phosphorus, indicating soil build-up was the dominant fate. This study illustrates a potential trade-off in urban agriculture between crop production and efficient phosphorus recycling from urban food waste.

Ayinde BA, Nicola Cantoreggi · International Journal of Environment Agriculture and Biotechnology · Senegal (Dakar)

This study focused on the commercial dimension of urban and peri-urban agriculture (UPA) in the Dakar region, Senegal, involving 214 market gardeners across three production areas. Results showed that UPA, specifically urban market gardening, constitutes a full-fledged commercial activity with monetary income significantly higher than Senegal's minimum wage. This almost exclusively commercial orientation allows agri-urban households to cover their food and non-food expenses inherent in urban living.

Eric Love · Wildlife in Australia · Global

This paper discusses the fundamental importance of water and food for survival, with Eric Love from CORE noting global stress due to climatic fluctuations. It poses the question of whether urban agriculture could hold the key to ensuring future water and food security.

Tal Alon‐Mozes, Efrat Eizenberg · · Global

This chapter examines Mediterranean urban agriculture (MUA) through case studies, challenging the traditional division between developed northern and developing southern countries. It argues that MUA is a distinct phenomenon characterized by the transfer of modern agricultural knowledge and policies from developed to developing countries, alongside a northward movement of people, crops, and traditional lifestyles from the south.

Solomon Gbanie, Amy Griffin, Alec Thornton · Remote Sensing · Sierra Leone

This research analyzed land cover change (LCC) dynamics in Sierra Leone's Western Area from 1976 to 2011 using satellite imagery, covering pre-conflict, conflict, and post-conflict periods. The study found a rapid increase in built-up land and urban/peri-urban agriculture over 35 years. During the war (1976-2000), urban agriculture became a key livelihood for displaced persons, while post-war housing demands further drove land use changes. A significant finding was that landscape fragmentation increased alongside declining forest cover, with built-up areas aggregating.

Paloma Gonzalez de Linares · International Journal of Design & Nature and Ecodynamics · Hungary (Budapest)

This paper aimed to assess factors contributing to more successful integration of urban agriculture in some cities and to introduce agro-ecology practices in public green spaces and community gardens through landscape assessment and map-based comparison. A key problem identified was the lack of motivation among planners to integrate urban agriculture into urban plans, preventing these green structures from becoming part of the city's landscape and dynamics. The sustainability of food systems was concluded to depend on the city's planning strategy and governance policies.

Jaime Hernández García, Sandra Caquimbo-Salazar · · Colombia (Bogotá)

In Bogotá, Colombia, over 50% of the city has developed through informal practices, with approximately four million people residing in areas of urban or housing informality. This chapter explores the transformation and appropriation of urban spaces in the barrios through urban agriculture initiatives, using examples of food growing spaces in Bogotá. It discusses agricultural practices in the city's informal settlements, highlighting social characteristics and spatial particulars, and advocates for open spaces as potential productive landscapes where spatial transformations can contribute to social, cultural, and nutritional practices.

Sécou Omar Diédhiou, Oumar Sy, Christine Margétic · Espace populations sociétés · Senegal (Ziguinchor)

A study in Ziguinchor, Senegal, surveyed 248 farmers and 130 vegetable vendors in 2016 and 2017 to examine the role of urban agriculture. Urban expansion has led to shrinking agricultural land and land-use conflicts, while increasing food demand. Women play a central role from production to commercialization, farming in multiple locations for self-consumption and income, but the sustainability of these practices requires integration into proactive urban development policies.

Kelvin Victor, Fatihiya Ally Massawe, Anna Sikira · Journal of Agricultural Sciences – Sri Lanka · Tanzania

In Kinondoni Municipality, Tanzania, a study assessed the types of integrated urban agriculture (IUA) practiced, livelihood strategies adopted, and IUA's contribution to household income. Quantitative and qualitative data were collected from 132 respondents, showing IUA to be the most prioritized livelihood strategy. 98.5% of farmers concentrated on crop-livestock integration, and the average annual income from IUA was 2,295,288 TSH (1093$), sufficient for a six-member household above the monetary food poverty line. This study focused solely on the income livelihood indicator, not considering other benefits like food security or social inclusion.

Michael Tuffour · AgEcon Search (University of Minnesota, USA) · Ghana

This study in the Greater Accra Metropolitan Area, Ghana, investigated how urban vegetable farmers adapt to rapid urban change, using a mixed-methods approach including a survey of 251 farmers. Institutional actors promote urban agriculture through training, logistics, and land provision, but the changing urban environment hinders their support. Institutions providing land often lack official agreements with farmers and sometimes abuse them, despite being a significant support source.

Hayford Mensah Ayerakwa · International Development Planning Review · Ghana

A study using data from two medium-sized cities in Ghana analyzed the importance and determinants of food transfers received from urban or rural households. It examined whether participation in agriculture reduces a household's likelihood of receiving food transfers, showing that households participating in urban agriculture had a lower chance of receiving food transfers from other urban dwellers. Female-headed households and aging household heads had an increased likelihood of receiving food transfers, with grains and tubers being the most commonly received food groups, typically from rural and urban relatives.

Luca Salvati, Silvia Pili · Journal of Sociological Research · Greece (Athens)

This study proposes an approach to understand new food production strategies in fragmented peri-urban landscapes, focusing on local primary sector actors. A preliminary survey in the Athens metropolitan region, Greece, aims to identify trends in peri-urban farming and their implications for farmers and citizens, considering urban sprawl and land-use conflicts.

Désiré Jean‐Pascal Lompo, Emmanuel Compaoré, Michel Papaoba Sédogo, Martina Melapie, Charles Bielders, Eva Schlecht, Andreas Buerkert · Nutrient Cycling in Agroecosystems · Burkina Faso (Bobo Dioulasso)

This study investigated nutrient management in six urban vegetable gardens in Bobo Dioulasso, Burkina Faso, quantifying nitrogen (N), potassium (K), and carbon (C) fluxes and balances. Inputs of N and K significantly exceeded recommended amounts, leading to substantial horizontal annual surpluses of 1013 kg N ha−1, 879 kg K ha−1, and 25 t C ha−1. While total balances for N and K were positive, the total balance for C was negative, indicating an environmental tradeoff due to excessive nutrient input.

Fernanda Teixeira Gorski · · Global

This paper addresses the use of underutilized urban land for agriculture, noting that such land incurs significant financial and social costs for public infrastructure, maintenance, and cleanliness. It aims to explore how urban agriculture can contribute to building and qualifying the urban landscape.

Kwaku Obosu-Mensah · · Ghana (Accra)

This research was planned to study urban agriculture in Accra, Ghana, due to a lack of published work and personal interest. The study is interested in social inequality influencing farm location choice, how new migrants adjust to urban cultivation, and factors compelling government officials to change their attitude towards urban agriculture.

Manabika Sheel, Mohammad Bashir Ahmed, Shamim Ahmed Kamal Uddin Khan, Md. Matiul Islam · Fundamental and applied agriculture · Bangladesh (Khulna City)

A study in Khulna City from March to April 2018 interviewed 60 rooftop gardeners to analyze the scenario and problems of rooftop gardening. The study found that gardeners earned very poor economic benefits compared to their expenditures, with most preferring it as a hobby (98.33%) or for aesthetics (90%). Severe problems included excessive heat (91.67%), lack of proper nourishment (87.08%), and roof load (72.92%).

Camila Hellebuyck · DigitalCommons - Kennesaw State University (Kennesaw State University) · Colombia (Bogotá)

This project addresses urban farming in Ciudad Bolivar, an informal settlement in Bogotá, Colombia, where it emerged due to food scarcity and poverty. It proposes design placemaking strategies to improve the built environment and social cohesion by integrating agriculture from the initial design stages. The concept includes farming gardens, food markets, and a community hub to create a "performative edge" that mediates between rural and urban contexts.

Kwaku Obosu-Mensah · · Global

This chapter reviews literature to identify the types of people likely to engage in urban agriculture. It explains that the labor-surplus, dependency, and cultural lag models are complementary in explaining urban residents' involvement in agriculture. Low salaries compel workers to supplement income through urban agriculture, and the sector is expected to grow with population increases, notably with the increasing entry of highly educated and skilled personnel.

Simon Kojo Appiah, Eric Nimako Aidoo, Derrick Asamoah Owusu, M. W. Nuonabuor · Zenodo (CERN European Organization for Nuclear Research) · Ghana (Kumasi)

This paper assesses the spatial distribution of heavy metals and potential ingestion risks in Kumasi, Ghana, using geostatistical techniques on topsoil samples. Results from univariate and multivariate semivariogram models showed strong spatial dependence with autocorrelations ranging from 100 to 300 meters. The produced risk maps indicate strong spatial heterogeneity for most soil heavy metals, with extremely high contamination risk found near commercial areas.

Katinka Mihova · · Global

This paper discusses urban agriculture as a sustainable future, particularly for the urban poor in developing countries. Defined as an industry within or on the fringe of urban areas that produces and distributes diverse food and non-food products, urban agriculture functions as an informal food supply system. The paper notes increasing global attention to urban agriculture and the emergence of analyses attempting to systematize its benefits and drawbacks.

Amitrajeet A. Batabyal, Karima Kourtit, Peter Nijkamp · Munich Personal RePEc Archive (Ludwig Maximilian University of Munich) · Global

This study uses a dynamic model to analyze the growth effects of new agricultural technology adoption in rural-urban settings. It determines the steady-state growth rate of agricultural output per worker in rural regions and defines an urban-to-rural agricultural technology knowledge ratio to compute the urban region's growth rate. The analysis also examines the ratio of agricultural output per worker between urban and rural regions at balanced growth and discusses policy implications.

Carolyn Steel · · Global

This essay introduces the concept of "sitopia" — a society consciously shaped by food as a tool — and argues that in cities with large amounts of vacant land and low-income residents, such as Baltimore, Detroit and New Orleans in the United States, urban farming could help green the city and revitalize neighborhoods. It states urban food production is likely to meet only a small proportion of a community's total food needs, while noting that local food production can still improve environmental quality and social ties and encourage sustainable local economic development.

Christian Isendahl, Stephan Barthel · · Global

A book chapter draws on insights from pre-Columbian Maya cities, medieval Constantinople, and wartime London, applying them to the contemporary mega-region of the Ganges-Brahmaputra Delta. It demonstrates the potential for integrating archaeological and historical research with investigations of contemporary conditions to inform urban planning. Despite fundamental differences across eras, it argues urban and peri-urban food production continues to play a key role for food security and city resilience, and that the long-term record shows maintaining a diversity of food systems — including localized ones — and institutional flexibility at multiple scales is essential to addressing food security challenges.