Research & reports

Peter Dery Bolang, Issah Baddianaah, Issaka Kanton Osumanu · Cogent Social Sciences · Ghana

This cross-sectional survey examined formal sector employees' participation in urban agriculture (UA) in urban Wa, Ghana, using data from 364 employees across four public institutions. Findings revealed that only 37.9% of contacted employees participate in UA (food crops and/or animal production). Participation likelihood was influenced by household size, income, expenditure, and farm income, with employees in the Teacher and Education Directorate showing higher engagement. The study highlights the need for policy attention to increase formal sector employees' UA participation to enhance food supply and household well-being.

Anushi Anushi, A. Krishnamoorthi, Jitendra Chaurasia, Bijay Kumar Baidya, Abhishek Singh, ­ Sapna, Vijay Kumar, Anushka Singh · Journal of Scientific Research and Reports · Global

This review explores the historical evolution and diverse models of urban farming, highlighting their contributions to food security, environmental sustainability, and community resilience. Challenges faced by urban farmers include limited space, soil contamination, regulatory hurdles, and access to resources.

Mary Mattingly · Intellect eBooks · Global

This essay shares two research practices stemming from the author's seven-year engagement with extractive supply chains for specific objects. Swale is a floating food forest that uses the common law of the waterways as a loophole to do what was illegal on common land, highlighting governance challenges within existing systems.

Juan Camilo Fontalvo Buelvas, Maria Teresa Pulido Silva, Miguel Ángel Escalona Aguilar · Magazine Portal Bibliotech Digital (Universidad Nacional de Colombia) · Global

This bibliographic review identified the main problems of urban agriculture and actions for sustainability. The study found that the primary deficiencies in urban agriculture are inadequate management practices, a lack of organization, and absent or inefficient public policies. Key leverage points for change include agroecology, policies for land access and sustainable financing, and dissemination processes.

Dennis Guerra-Centeno, Paula Guerra-Burmester, Carlos Valdéz-Sandoval, Alfredo Gómez-Chacón, Sayra Pérez-Julián, Jackeline Marisol Noriega-Huertas, Ligia Vanessa Rios · Ciencia Latina Revista Científica Multidisciplinar · Global

This 10-week study evaluated the productivity of alfalfa (Medicago sativa) in two artisanal hydroponic towers, measuring survival, growth, biomass production, and light incidence effects. Survival was 97%. Final average heights were 40.6 cm in the upper stratum and 29.8 cm in the lower stratum, with significant differences from the second week (p < .001). Final average plant weight was 12.55 g in the upper stratum and 5.35 g in the lower, but no significant difference in average weights between strata was found (U = 212, p = 0.754). Total biomass production was 358 g, equivalent to 1.33 kg/m2.

Paolo Paolo · International Journal of Neutrosophic Science · Global

This study used a neutrosophic multi-criteria approach to evaluate the impact of biostimulants and organic additives on soil quality, plant growth, and crop yields in urban agriculture. Biofertilizers like Chromococcus and Azotobacter improved nutrient availability and plant health, while mineral additives like zeolites enhanced soil fertility. Three scenarios were analyzed: one showed exceptional plant growth and high sustainability (Very Very High), another highlighted challenges in vegetative growth and sustainability (Low), and a third combined good plant growth with high sustainability and climate change mitigation (Medium High).

Andrea Baier, Christa Müller, Karin Werner · Neue Ökologie · Global

This study discussed the significance of the new urban garden movement for sustainable urban restructuring, focusing on community garden practices over the past two decades. It examined how the movement is integrated into the governance of urban climate crisis policies, how it utilizes this framework, and to what extent the autonomy of gardens as free spaces and commons can be maintained under these circumstances. The findings suggest that the autonomy of urban gardens may be difficult to maintain when integrated into climate crisis policy governance.

Assyifa Fauzia · Journal of Critical Ecology. · Global

This literature review analyzed the role of urban agriculture as an ecosystem service provider within the Sustainable Development Goals (SDGs). Urban agriculture in developing countries was found to be adopted as a solution to address poverty and improve the welfare of urban populations, applicable to all SDGs except ocean ecosystems. Urban agriculture contributes to social indicators like employment, food provision, community welfare, education, women's roles, and community forms; economic indicators such as market food reach, job status, land ownership, food subsidies, and credit access; and environmental indicators including water storage, land use, emission reduction, microclimate regulation, and biodiversity.

Filippo Oncini, Steffen Hirth, Josephine Mylan, Clare H. Robinson, David Johnson · Urban forestry & urban greening · Global North

This review evaluates the contribution of urban food forestry in the Global North to socio-ecological outcomes across climate change, biodiversity, food production, and relational aspects. The findings demonstrate multifactorial benefits of urban foraging and food forestry, but also identify potential risks and disservices from the literature. The study concludes that upscaling these spaces offers significant gains, requiring systemic changes.

J. V., Juan M. Corchado, Diana M. Giraldo, Sara Rodríguez-González, Fernando De la Prieta · Internet of Things · Global

This paper presents an Internet of Things (IoT) platform for monitoring urban gardens, aiming to mitigate hunger and promote food sovereignty. The platform includes a social design layer for knowledge transfer and a recommendation system based on evolutionary computation to optimize urban orchard productivity. Experiments in urban gardens validated the models, showing an increase in urban lettuce orchard productivity between 25% and 45%.

Lena Katharina Mietz, Bárbara Civit, Alejandro Pablo Arena · Agroecology and Sustainable Food Systems · Global

This review focuses on the present state and methodology of life cycle assessment (LCA) to evaluate the sustainability of urban agriculture. It notes that while urban agriculture is seen as a potential alternative for a resilient food system, existing case studies are mostly incomplete and lack diversity. Further research is needed, especially the integration of social and economic perspectives, to achieve a comprehensive scientific understanding.

Emmanuel Frimpong Boamah · Urban agriculture · Global

This chapter examines alternative governance visions for urban agriculture, or urban food commons (UFCs), through the lens of polycentric governance. It argues that UFCs require a mix of institutional arrangements, including centralized, decentralized, market, cooperative, and command-and-control models, rather than a single approach. Four institutional design parameters are outlined to guide this polycentric vision: multiple decision centers, cross-scale and cross-sector interactions, an overarching rule system, and rule adaptability, exemplified by Chicago's NeighborSpace.

Matthijs T. Wessels, Shaaban M. Mgana · Urban Forum · Tanzania

Based on ethnographic research in Dar es Salaam, Tanzania — one of the fastest-urbanizing cities in sub-Saharan Africa — this study examines how farmers configure their day-to-day agricultural practices amid urban change. Contrary to narratives that present agriculture as passive in the face of urban growth, it describes farmers building networks of provision through informal access to land and water, supplying food and employment while actively co-shaping the city. Farmers adapt their strategies in response to land pressure and water resource degradation. The paper argues that better representation of urban farmers and irrigated agriculture in urban planning and governance would reduce uncertainty and risk for both farmers and the wider city.

Ada Górna · · Global

This chapter summarizes research conducted for a book comparing urban agriculture in three cities — Havana, Singapore, and Kigali. It presents a structured comparative analysis identifying similarities and differences among these Global South cities across four facets: distribution characteristics, internal structural/production and organizational/technical features, distribution methods, and functions fulfilled. It also identifies universal attributes of urban agriculture that recur independently of spatial, socioeconomic, political, and environmental conditions, along with distinctive mechanisms shaping its development, and discusses verification of the study's hypotheses, methodological challenges specific to each city, and directions for future research.

Victoria Dietze, Amna Alhashemi, Peter H. Feindt · Food Security · Global

Using the Urban Food Production Innovation System (UFoPrInS) concept, a 2024 study analyzed the urban contexts and enabling and impeding factors for implementing controlled-environment agriculture (CEA) in three contrasting locations — London, Nairobi and Singapore — based on document analysis and semi-structured expert interviews. Findings show Singapore as a favorable location because public policies support CEA implementation to reduce food import dependency and enhance the resilience of food supply. In London, high food import dependency is increasingly seen as problematic, but CEA implementation has been hampered by other policy priorities. In Nairobi, where over half the population lives in informal settlements without adequate food, water and sanitation, CEA is unlikely to make an economically efficient contribution to food security. The study concludes that CEA implementation is likely to be suitable in locations with ample capital and knowledge, stable political, social and infrastructure conditions, and limited space, where its value can be linked to hospitality and tourism and supported by favorable pricing for resource savings.

Godwin K. Naazie, Isaac Agyemang, Anthony Mwinilanaa Tampah-Naah · Heliyon · Ghana

A quantitative survey of 362 urban households across diverse neighborhoods in Ghana used descriptive statistics, chi-square tests, and binary regression to examine socioeconomic factors behind urban agriculture participation under climate stress. Household size and income were significant at the 0.05 level, middle- and high-income households participated more than lower-income ones, and land was acquired mainly through purchase, which the study identified as a barrier to participation.

Jennifer C. Franco, Saturnino M. Borras · Oxford University Press eBooks · Global

This chapter examines the dominant convention in critical agrarian studies and agrarian movements — that land struggles are best captured by an agrarian-reform framework of expropriating land from large private monopolies for redistribution to landless and near-landless working classes. It argues that while this type of struggle remains important, it does not fully capture the range of land struggles of working people across rural and urban, agricultural and nonagricultural spaces. Over recent decades the working classes have fragmented, as the numbers of people combining agricultural/nonagricultural and rural/urban livelihoods have vastly expanded, decentering working people's land struggles from the classical treatment tied to agriculture and capitalism. Land struggles today are dispersed and multisited, with political leadership and power that are polycentric rather than unified, and span multiple scales.

Górna, Ada · · Global

A book examines the position of urban agriculture within the spatial and functional structure of cities in the Global South through case studies of three cities: Havana, Singapore and Kigali. Drawing on fieldwork conducted in each city, it documents the diverse characteristics of urban agriculture across differing socio-economic, spatial, political and environmental conditions and identifies constraints on its development.

Madison Powers · · Global

This chapter surveys the food-security implications of agricultural land use, unsustainable features of widespread food production practices, and the debate over agricultural intensification versus extensification, then examines land use's consequences beyond the land itself for groundwater, surface water, oceans, ambient air quality, and planetary systems. It explains the causes of forest destruction and fragmentation driven by the global expansion of land used for "high-risk commodities," the linkage between deforestation and declining terrestrial biodiversity, and the global market dynamics driving both crises. It assesses socioeconomic and ecological shortcomings in some proposed nature-based solutions, showing that they perpetuate an unsustainable business-as-usual approach, and summarizes how these land-use issues are conceptualized as human-rights concerns and translated into policy proposals.

Linda Weintraub · Nature-Based Solutions · Global

This essay examines five contemporary artists whose works address urban food insecurity through individually and community-scaled, nature-based approaches rather than large-scale production and distribution systems. Analyzing both the content of the artists' food-related concerns and the unconventional strategies used to convey them, the essay argues these works are relevant to nature-based solutions (NBS) for urban food, noting some approaches appear suited to scaling up while others point to a need to relax regulations that inhibit experimentation.

Tarek Ben Hassen, Hamid El Bilali · · Global

This book chapter combines bibliographical and topical analysis of scholarly and gray literature with case studies from Middle East and North Africa (MENA) countries to examine the state of urban and peri-urban agriculture (UPA) amid regional climate pressures — rising temperatures and frequent droughts damaging limited water resources and threatening agriculture and food security. The chapter reports that UPA in the region lacks adequate infrastructure and resources, including access to water, suitable land and equipment, and that in many MENA cities, the absence of government initiatives combined with land tenure problems and high land prices makes UPA less prevalent and less viable; it concludes that improved policy support and enabling regulations — including zoning rules and financial and technical support — are needed to expand UPA in the region.

Bambang Tri Kurnianto · West Science Nature and Technology · Global

A review article examining urban farming practices — including rooftop gardens, vertical farms and community gardens — as approaches to the land scarcity and food-security pressures of rapid urbanization. Drawing on case studies from cities worldwide, it discusses their reported role in improving food access, reducing carbon footprints and fostering social cohesion, and argues for integrating urban agriculture into urban planning together with supportive policy and community engagement. The article does not report original data, a defined study site, or quantified outcomes.

Annie Drottberger, Yizhi Zhang, Jean Wan Hong Yong, Marie-Claude Dubois · Renewable and Sustainable Energy Reviews · Global

This systematic literature review, based on 45 articles, examined the benefits and challenges of rooftop greenhouse technology. While benefits include optimized land use, increased profitability, good yields, and resource efficiency, the review identified significant challenges. These challenges include additional investment and operational costs, limited availability of flat roofs, and various regulations, which hinder the widespread adoption of rooftop greenhouses.

Maurice Kesonga Nsele, Thomas Dogot, Kevin Maréchal · Frontiers in Sustainable Food Systems · Democratic Republic of Congo (Lubumbashi)

Survey data from 88 randomly chosen farmers in Lubumbashi, Democratic Republic of Congo, was analyzed to understand the role of informal mutual aid networks in maintaining urban farms. Results showed that 79.5% of surveyed farmers utilized mutual aid to ensure their vegetable production cycle, involving resource sharing (15.1 interactions per farmer) and agricultural know-how sharing (11.6 interactions per farmer). Gender, age, experience, religious affiliation, farmer status in the household, neighborhood relations, kinship, and religious affiliation were significant factors for mutual aid.

Bénédique Paul · Food systems · Haiti

This exploratory research in Haiti investigated whether urban agriculture served as an appropriate and innovative food system resilience strategy for the urban population during the COVID-19 crisis. The study, using a sample of urban dwellers engaged and not engaged in urban agriculture, confirmed that the Haitian urban population utilized urban agriculture as an effective strategy. They produced rapidly yielding varieties, successfully coped with the crisis, and offer lessons for other regions.