Research & reports

Letícia Englete de Mello, Dirlane de Fátima do Carmo, Daiane Cecchin, Leonardo da Silva Hamacher, Marcel Carvalho Abreu, R. M. Anjos, Mariana Vezzone · Revista de Gestão Social e Ambiental · Brazil (Rio de Janeiro)

This study investigated the profile of 159 urban and peri-urban agricultural producers across 29 municipalities in Rio de Janeiro State, Brazil, using quantitative interviews and statistical analysis. Producers were predominantly men over 50 with limited education, cultivating small plots with organic methods but receiving little technical support. Key challenges identified were a lack of assistance and resources, and urban agriculture's potential is hindered by the absence of effective public policies.

Joseph Seong, H. Christopher Peterson, Simone Valle de Souza · Agribusiness · Global

This study evaluated the economic and environmental sustainability potential of urban indoor agriculture (IA) using a multi-objective optimization model (IA-MOO) integrating a bioeconomic model for lettuce production. Results indicated that earnings before taxes (EBT) and energy use efficiency (EUE) are generally not conflicting objectives, except for a short production schedule frame.

Juan Camilo Fontalvo-Buelvas, María Teresa Pulido Silva, Miguel Ángel Escalona Aguilar, Raúl Romero Ramírez · Memorias · Mexico (Xalapa)

This diachronic study analyzed the drivers and inhibitors of urban agriculture in Xalapa, Mexico, through a historical tracing from 1821 to 2023. Drivers included rural immigration, academia, and government programs, while inhibitors were identified as diversification of trades, ejido laws, remittances, health policies, and food markets.

Rafi Haikal, Thoriqi Firdaus, Herdis Herdiansyah, Rizqi Shafira Chairunnisa · Sustainability · Indonesia

This study investigated the relationship between urban planning policies and architectural design in fostering sustainable food systems in 75 smart cities in Indonesia, using a mixed-methods approach. Key findings revealed that food security is significantly undermined by the Gross Regional Domestic Product (GRDP), indicating distributional inequalities, high food expenditure, and a lack of clean water. Conversely, access to electricity improves resilience.

Citra Dusun, Magie M. Kapojos, Mervina Rondonuwu, Christine Lomo, Rinny Lontoh, Filan Mandang, Yuannita Aida · Jurnal Pengabdian Ibnu Sina · Indonesia (Manado)

A program in Manado, Indonesia, aimed to enhance food security and self-reliance by promoting chili cultivation in home gardens through socialization, counseling, and seed distribution. While it provided positive economic impacts, the program faced challenges including limited access to agricultural inputs and post-program plant maintenance. Further research and continued mentoring were recommended to evaluate its effectiveness and maximize impact.

Belma Soto-Fernández, Lurys Bourdett-Stanziola · Asian Journal of Agricultural and Horticultural Research · Latin America

A documentary review on the importance of urban gardening in Latin America revealed that urban gardening, when approached through the lens of agrobiodiversity, has become a key strategy for safe food production and environmental sustainability. However, it was found that several Latin American countries lack clear and established laws to regulate this activity. Preliminary evidence of rotavirus was detected in fresh vegetables from an urban garden in Panama, indicating that urban gardens can become infection foci capable of causing diseases of public health and veterinary importance.

Lena Schmeiduch, Émile Thévenot · International Review of Education · Global

This study explored the potential for lifelong learning within sustainability-led initiatives, such as ecovillages and community-supported agriculture, through the theoretical lens of Noah Sobe's four pillars of lifelong education. While these initiatives offer opportunities to address sustainability-related challenges, their insular nature and limited accessibility have drawn criticism in the literature on sustainability transitions. The analysis suggests that these initiatives and lifelong learning agendas frequently converge in their framing of sustainability issues.

Gideon Baffoe, Philip Antwi‐Agyei · City and Environment Interactions · Ghana (Accra)

This mixed-methods study analyzed the role of urban agriculture (UA) in climate resilience in Accra, Ghana, from the perspective of policymakers. While UA contributes to food security, water use efficiency, and ecological protection, its integration into policy frameworks was found to be limited due to challenges such as weak institutional coordination, competing economic priorities, and governance inefficiencies.

Justin B. Richardson, Eric Vukicevich, Eric C. Sirkovich · Bulletin of Environmental Contamination and Toxicology · United States

Soils, sap, and maple syrup were collected from four artisanal maple syrup producers in four suburban areas across the northeastern United States to assess nutrient and trace element concentrations. Soil arsenic and lead concentrations approached or exceeded EPA limits. Sap and syrup arsenic, cadmium, nickel, lead, and zinc concentrations reached or exceeded FDA limits for food.

Kurnia Dewi, Yusuf Hariyoko, Hasan Ismail · Presidensial · Indonesia (Surabaya)

A qualitative descriptive study investigated stakeholder synergy in urban farming programs in Surabaya, Indonesia. Data was collected through interviews, documentation, and observation involving the DKPP, agricultural extension officers, farmer groups, and the local community. Strong commitment, competence, awareness, and continuity were identified as driving factors for successful implementation, but challenges include declining active farmer groups and limited facilities.

Vidjinnagni Vinasse Ametooyona Azagoun, Kossi Komi, Djigbo Félicien Badou, Expédit Vissin, Komi Sélom Klassou · Geographies · Africa

Drawing on socio-economic, techno-agronomic, and perceptual data collected from 369 growers in the Grand Nokoué region of Benin, this study combined multiple correspondence analysis (MCA) with ascending hierarchical analysis (AHA), confirmed by K-means partitioning, to identify profiles of climatic vulnerability among urban market gardeners. Three distinct vulnerability groups were identified, differing in socioeconomic, technical, and territorial characteristics and in their exposure to flooding, drought, and dry spells. The most vulnerable farmers were disproportionately young women with low incomes, limited access to land, and reliance on manual irrigation in flood-prone areas. The findings point to an uneven distribution of adaptive capacity and a need for public policies tailored to strengthen the resilience of small-scale, low-income, and land-insecure urban farmers who are exposed to these climate-related risks.

Finn Williams, Ruby Johnston, Aiden Campbell · International Journal of Horticulture and Food Science · Germany

At the Christchurch College of Food Technology in New Zealand, researchers compared five growing systems -- rooftop container, raised bed, peri-urban orchard, rural orchard (reference), and heated greenhouse -- for avocado (Persea americana) cv. 'Hass' under simulated Bavarian Plateau conditions, using a randomized complete block design with four replications over three years (2020-2022). The rural orchard yielded highest at 22.3 kg per tree, peri-urban raised beds achieved 18.7 kg per tree using 56% less land, and rooftop containers (200 L pots) produced only 6.8 kg per tree, confirming that container culture is viable but yield-limited; rooftop systems had the lowest weed pressure, peri-urban orchards supported the richest arthropod biodiversity, and ISSR molecular markers confirmed genetic uniformity among grafted plants across systems, ruling out somaclonal variation as a source of the yield differences.

Ramadha Subhani Aden, Luki Anjardiani · Frontier Agribisnis · Indonesia

Focused on "Merko Hidroponik," a Merck Family Foundation-funded hydroponic (NFT) lettuce enterprise in Banjarbaru City, Indonesia, adopted as urban farming to address declining agricultural land, this study (2025) used descriptive methods to calculate total costs, revenue, profit, and business feasibility (R/C ratio) for the period March 2023 to July 2024, during which 11 planting cycles were completed from seeding through nursery, growth management, harvest, and post-harvest processing. Total costs were Rp7,906,424, total revenue Rp9,920,000, and profit Rp2,013,576, yielding a feasibility ratio of 1.254, concluded to make the business "feasible" to run. However, the study also identifies that the enterprise currently faces problems of root rot disease, managerial inefficiency, and challenges maintaining production continuity.

Talitha Ummiyah Hana, Sulistyodewi Nur Wiyono, Mahra Arari Heryanto, Ahmad Choibar Tridakusumah · MIMBAR AGRIBISNIS Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis · Indonesia (Bandung)

A case study of Greenhouse X, an urban farming enterprise in Bandung, Indonesia, found that its hydroponic water spinach (kangkung) supply has not been able to optimally meet market demand, and that its supplier-farmer partners are often inconsistent in meeting supply targets. Using a qualitative case-study method analyzed descriptively, the study identified 19 production risk events. The highest-severity risks (Si=9) were plant death during growth and root rot; harvest delays and unmet product quantity were rated as extreme-impact risks (Si=8).

Ristina Siti Sundari, Depy Muhamad Pauzy, Hary Firmansyah, Arif Arif, Jhon Hardy Purba · Agro Bali Agricultural Journal · Indonesia

Against the backdrop of urban farming as a strategic response to land scarcity and food security challenges in metropolitan areas, this study examined the financial performance and internal marketing value of shallot (Allium cepa var. aggregatum) agribusiness grown hydroponically using Nutrient Film Technique (NFT) and Deep Flow Technique (DFT) systems across two planting cycles. As a case study at P4S Galih Jaya, Indonesia, the quantitative descriptive research combined direct observation, financial documentation review and structured stakeholder interviews, calculating standard agribusiness financial metrics — production output, net income, Benefit-Cost (B/C) ratio and Break-Even Point (BEP) — while internal marketing indicators (employee understanding, decision alignment and motivation) were assessed via pre- and post-cycle surveys. The DFT system in cycle 2 yielded the highest net income (IDR 2,036,725) and B/C ratio (3.6), while the NFT system in cycle 1 incurred a financial loss of IDR 10,155 with a B/C ratio of only 0.9, indicating it was unprofitable. Internal marketing indicators showed clear improvement between periods, and the study concludes that the choice of hydroponic system affects not only profitability but also internal stakeholder engagement.

Ioana Florea · · Global

This chapter finds that while collective urban gardening projects represent forms of resistance against market-based food systems, the precarization of urban natures, and real-estate dominance, their everyday practices often fail to deliver on these ideals and intentions, generating incomplete, contradictory, or temporary results. It proposes a heuristic frame linking space, time, and class to review prior urban-gardening research from a political-ecology perspective, tracing how space's materiality, time embedded in plant growth, and class differences conditioning gardeners' access to space and time produce these contradictions.

Getachew Demissie Desta, Zeleke Gonfa Wordofa · International Review for Spatial Planning and Sustainable Development · Ethiopia

A study of the rate and direction of spatial expansion of Robe Town, Ethiopia, into surrounding rural kebeles, and its effect on the tenure security of peri-urban landholders. It combined socioeconomic data from 202 sampled household heads with spatial data from Landsat images taken in 1987, 2002, and 2020. The town grew annually by 18.6% (1984–1994), 11.3% (1994–2007), and 9.3% (2007–2020), with its total area rising from 5.1 km² in 1984 to 80.2 km², a 40.9% overall increase. Over the 33-year period, built-up area expanded fastest southward, reaching 9.91 km from the town's mean center, and grew from 4.38 km² in 1987 to 27.9 km² in 2020; about 10.2 km² of farmland was converted to built-up land between 1987 and 2020. In peri-urban areas of Robe town, 48.9% of landowners lost around half of their farmland, leaving peri-urban landowners feeling insecure about their tenure due to fear of eviction and expropriation at minimal compensation.

Getinet, Abate · National Academic Digital Repository of Ethiopia · Ethiopia

A mixed-methods, cross-sectional descriptive study of urban agriculture in Gulele sub-city, Addis Ababa, Ethiopia, examining perceptions, opportunities, and challenges. It combined a survey of employees and farmers, in-depth interviews with farmers, key informants, and experts, and a focus group discussion with civil service employees. The study identified scarcity of urban farmland, scarcity of water for irrigating vegetables, and constraints on various agricultural inputs as core problems, alongside market accessibility issues for selling produce and limited transportation availability, even as vegetable consumption and demand among urban dwellers were rising and government policy treated urban agriculture as a current priority. It also found a negative social attitude among urban dwellers toward urban agriculture, who regard it as old-fashioned work and view urban farmers as backward and uneducated. The study concludes that the Addis Ababa City Administration's urban agriculture development sector needs to work with research institutions to address pest and insect problems and to improve vegetable yield per unit of land.

Augustin Tshilumba Ilunga, Michel Mbumba Bandi, Albert Tshinyama Ntumba, Damien-Joseph Muteba Kalala · Revue Africaine d’Environnement et d’Agriculture · Democratic Republic of Congo

A study of urban agriculture in Kinshasa, Democratic Republic of Congo—a sector described as vital for food security and employment amid rapid urbanization, food insecurity, and unemployment, where farms face significant challenges including land pressure, restricted access to credit, and lack of institutional support. The study aimed to (i) examine the motivations of agri-entrepreneurs, (ii) assess their impact on farm viability, and (iii) identify the economic and non-economic factors influencing business sustainability, using a qualitative and quantitative survey combining 20 semi-structured interviews across three peripheral zones (via snowball sampling) with documentary analysis. Three categories of entrepreneurs were identified: civil servants farming as a supplementary activity, private-sector employees investing in farming, and traders farming to secure their survival. Non-pecuniary motivations such as social engagement and passion strengthened resilience, but land insecurity, a financing deficit, and lack of training were identified as the major obstacles farms face; observed adaptive strategies included diversification and informal partnerships. The study concludes by calling for integrated strategies to secure land tenure, facilitate access to credit, and professionalize the sector while integrating peri-urban agriculture into urban planning processes.

Fadhil Adi Nugraha, Ira Malihatun, Siwi Gayatri, Titik Ekowati, Sumarsono Sumarsono · AGRICOLA · Indonesia

In Semarang City, Indonesia, a survey of 86 farmers from four Women Farmer Groups (KWT) who received the government's Sustainable Food Yard (Pekarangan Pangan Lestari) program — using questionnaire interviews, descriptive analysis, and a literature review — assessed the program's social, economic, and environmental impacts. The social impact was rated "less" (score 31.10%), the economic impact "low" (28.88%), and the environmental impact "very low" (18.60%). The program strengthened social relations among farmers but was not effective in improving farming skills or public health; economically it had potential to contribute to household expenditure but had not optimized income growth or job creation; and its environmental impact remained limited, particularly in preserving biodiversity and reducing chemical use.

Ylva Wallinder · Local Environment · Europe

A study of Gothenburg, Sweden, examines the city council's shift over the past decade from associational (collective) urban gardening toward entrepreneurial gardening on municipal land, promoted through a scheme called "from garden box to hectare" that draws residents into entrepreneurial training while taking municipal gardening classes. Analyzing the consequences of this commodification of urban sustainability projects, the study finds that socio-economic resources and social relations both limit and strengthen entrepreneurial gardening practices and participants' quality of life, and that perceived competition among gardeners has turned urban gardening into a lonely, precarious, and individualized activity compared with the formalized associational gardening the municipality previously promoted. The finding points to a mismatch between the local government's sustainability visions and gardeners' actual experience.

Krishna R. Reddy, Jaqueline Rojas Robles, Suzane A. V. Carneiro, Banuchandra Nagaraja · Journal of Environmental Engineering and Science · United States (Chicago)

Using an existing hydroponics system in Chicago as a case study, this life cycle assessment (environmental impact via SimaPro, social and economic sustainability via a semi-quantitative approach) compared a hypothetical scaled hydroponics system against a scaled community garden serving the same number of users in the same area. The results show hydroponics systems present greater sustainability challenges than community gardens overall, though a hydroponics system incorporating LED lights was found to be more sustainable than the community garden; the authors call for future research to more accurately assess the differences between the two models.

Usha Baniya, Sachin Khaniya, Rojan Karki · Nepalese Journal of Agricultural Sciences · Asia

This review paper positions hydroponics—a soilless cultivation technique—as a method of urban agriculture addressing confined land availability, food security, and environmental concerns from urbanization, focused on Kathmandu, Nepal. It synthesizes existing insights on setup costs, operational challenges, and profitability against global trends and local constraints, and, framing setup costs and operational challenges as barriers to adoption, recommends subsidies, training, and integration into urban planning as pathways to foster the uptake of hydroponic farming.

Jacob Wallace · Waste Dive · United States

NYC's Department of Sanitation began enforcing mandatory curbside organics separation on April 1, 2025, issuing nearly 2,000 summonses in the first week, but Mayor Adams paused broad enforcement through 2025 on April 18, limiting fines to persistent violators. The city had distributed about 190,000 free bins and sold 63,000 more, and organics diversion had risen 65% from FY2022 to FY2024.

Ministry of Sustainability and the Environment, Singapore · Ministry of Sustainability and the Environment, Singapore · Singapore

On 26 September 2025, Minister Grace Fu replied to a parliamentary question on progress toward the "30 by 30" goal, stating that less than 10% of Singapore's food consumption is currently produced domestically. She called the goal "aspirational," set before COVID-19 under more favourable conditions, while noting locally produced hen eggs exceed 30% and beansprouts exceed 50% of local consumption, and that the alternative protein industry faces high energy costs and insufficient consumer acceptance.