Research & reports

Jeong D., Li L., Perez-Quesada G. · Choices Magazine (Agricultural & Applied Economics Association), 2nd Quarter 2026 · United States

An analysis of community garden siting through an environmental cost-benefit framework, organised around two direct costs (land and water) and two externalities (water pollution and gentrification). Cheap vacant parcels can carry remediation and infrastructure costs that exceed those of pricier development-ready sites over a garden's planning horizon, and in arid regions irrigation can be up to 34% of annual maintenance cost. On the externality side, weak nutrient management lets nitrogen and phosphorus accumulate and risk groundwater contamination, and community gardens can raise adjacent property values by 3–4% initially and around 7% within five years, potentially displacing the lower-income residents they are meant to serve. The authors note that the absence of a comprehensive geo-referenced inventory of community gardens — with establishment dates, tenure arrangements and management practices — constrains rigorous cost quantification and causal analysis.

James Comtois · Institutional Investor · Global

Signatories to the UN Principles for Responsible Investment grew from 63 institutions with $6.5 trillion under management in 2006 to 2,450 with $80 trillion in 2019. The article reports a research paper by Demirer and Zhang arguing that institutional ESG investing is largely herding driven by fad, reputational concern and fund flows, and has improved neither corporate ESG engagement nor investment performance. At the time of writing, global ESG fund inflows had fallen 50 per cent over the previous year, with a record $12 billion withdrawn in a single quarter.

Plinth · Plinth · United Kingdom

Published 5 April 2026 and updated 14 June 2026. Full cost recovery means funders covering not only a project's direct costs but its proportional share of overheads — rent, finance, IT, HR and chief-executive time. The article works through an example where two of ten staff (20 per cent of capacity) deliver a project, so £28,000 of £140,000 in annual overheads is added to £85,000 of direct costs for a £113,000 budget, and notes that overhead rates of 15–25 per cent are common sector guidance. It argues that accepting grants below true cost is a structural funding problem rather than a budgeting error, with consequences including staff burnout and governance risk, and notes that charity staff earn roughly 7 per cent less per hour than equivalent roles elsewhere in the economy.

Rao X., Zahid A., Ye X., Jain D., Duffield N. · Urban Informatics · 国際（論考）

A Perspective arguing that controlled environment agriculture (CEA), driven by venture capital and profit-maximising imperatives, has delivered limited scalability, narrow crop diversity and minimal engagement with spatial equity — the fair distribution of food infrastructure across urban geographies. It calls for repositioning CEA not as a standalone technological fix but as a component of urban infrastructure delivering co-benefits for food justice, public health and environmental resilience.

Noxolo B.M., Kanosvamhira T.P. · Urban Agriculture & Regional Food Systems · 南アフリカ・ケープタウン（低所得地区）

Surveys and interviews assess whether hydroponics, of interest because dense settlements leave little space, is actually viable in Cape Town's low-income urban areas — deliberately supplementing a literature skewed towards Global North cities. Farmers perceive benefits in improved yields, water conservation and efficient land use, all valuable in a water-scarce, space-constrained city, but high setup costs and limited government support remain significant obstacles. Drawing on urban political ecology, the paper argues these financial and institutional barriers are rooted in historically produced inequality and ongoing capitalist dynamics of urban development. It concludes that while hydroponics has potential as a sustainable alternative, its high costs hinder broader applicability, and it is not yet a viable large-scale route to food security where resources are unequally distributed; supporting actors must first address financial feasibility and local expertise.

Ceccanti F., Bischi A., Desideri U., Baccioli A. · Energy Conversion and Management · 国際比較（トロンハイム・上海・ドバイを想定したモデル計算）

Filling a gap left by studies that assessed vertical-farming energy use and cost-effectiveness with simplified models, this paper isolates how individual input parameters drive efficiency, sustainability and economic viability using a detailed modelling framework with sensitivity and correlation analyses. It evaluates 162 scenarios combining three levels of temperature, photosynthetic photon flux density (PPFD) and CO2 concentration across the socio-environmentally distinct Trondheim, Shanghai and Dubai regions, at two insulation thicknesses. Because of HVAC and dehumidification, crop productivity stays optimal regardless of insulation or external climate. PPFD dominates growth (correlation 0.85), ahead of CO2 (0.36) and temperature (0.22), and also drives energy consumption (0.73). Lowest specific energy consumption coincides with lowest productivity (55 kg/m2), and the cheapest levelized cost of lettuce came at 24 degC, 250 umol/m2s PPFD, 1400 ppm CO2 with insulation (102 kg/m2). Only decarbonised energy systems can support vertical farming without raising CO2 emissions relative to imported lettuce.

Darrow S., Kathi S., Liebe R., Cline L.L., Moss J.Q. · Urban Agriculture & Regional Food Systems · 米国オクラホマ州（農村・都市・近郊）

Oklahoma's specialty crop sector is in decline — vegetable operations fell from 799 in 2007 to 482 in 2022 — yet regional fruit and vegetable producers remain the primary supply foundation for farmers' markets, food hubs and direct retail serving urban and peri-urban communities, so producer viability is itself an urban food access and public health concern as food deserts expand. Five semi-structured focus groups with 29 experienced producers from rural, urban and peri-urban Oklahoma were analysed by open coding thematic analysis in NVivo, with saturation confirmed iteratively and rigour established through member-checking, peer review of codes and field note triangulation. The 180 initial codes were organised into 10 parent codes and three themes: the countercultural philosophy of production, the lack of accessible resources, and industry barriers preventing development — compounding disadvantages at cultural, institutional and structural levels. The authors call for a statewide local food system plan, a growers' association and dedicated local-food-system extension roles.

Kanosvamhira T.P., Magidi M. · International Journal of Agricultural Sustainability · 南アフリカ・ケープタウン／ジンバブエ・ノートン

A qualitative case study comparing the motivations, operational dynamics, land access challenges and legislative contexts of urban agriculture in two contrasting cities — Cape Town (South Africa) and Norton (Zimbabwe) — through stakeholder interviews and policy analysis, guided by social capital theory. In Cape Town urban agriculture is semi-institutionalised, backed by governmental and civil society actors and framed within wider food justice and community development agendas, yet practitioners face significant constraints from land access, urban policy fragmentation and competition over space. In Norton it is largely informal, a survivalist response to persistent socio-economic hardship with minimal formal support but relatively flexible regulation, where land-tenure insecurity and the threat of eviction are the pressing concerns. The paper argues that context-specific legislative frameworks, secure land rights and inclusive urban planning are the enabling conditions, situating urban agriculture within debates on land governance and urban informality.

Florien Misago, Isaac Nzayisenga, Henri Jacques Ngirinshuti, Leon De Pere Irakoze, Richard Mind’je · East African Journal of Agriculture and Biotechnology · Rwanda (Kigali)

This study evaluated the potential of rooftop and wall-based urban agriculture to enhance food security in Gasabo District, Kigali, Rwanda. It used GIS and remote sensing to map suitable spaces and assessed 400 household heads using the Household Food Insecurity Access Scale (HFIAS). Findings showed that 41.5% of households experienced moderate to severe food insecurity, and approximately 32% of rooftops and walls were structurally appropriate for urban agriculture. While 57.8% of households expressed willingness to adopt rooftop or wall gardening, 67.4% cited structural and financial constraints.

Ibnu Akmal Khuluqi, Muhammad Azhari, Rahmawati Munir · TRANSFORM Journal of Tropical Architecture and Sustainable Urban Science · Indonesia (Bontang Baru)

A qualitative case study in Guyub Rukun RT 18, Bontang Baru, Indonesia, investigated the implementation of urban farming. The study found that urban farming improved local food security, strengthened social ties, and was supported by CSR funds. However, it faced challenges such as limited technology and resources, which were overcome through manual adaptation and cross-sector collaboration.

Gokulakrishnan G, Navaneetha Krishnan T, Tamilselvan D, S Sanjeevkumar, Devaganesh A, Janani N, K. Arunadevi, Balaji Kannan · Madras Agricultural Journal · Global

This review explores vertical farming, a method that uses stacked layers in controlled environments for year-round crop production with reduced resource use. It assesses the environmental and economic advantages of vertical farming, while critically examining its limitations, including high energy demands and limited crop diversity. The study highlights that despite its potential, vertical farming faces challenges regarding economic viability due to high energy consumption.

Kejela Gnamura, Michael Akwasi Antwi, Abenet Belete · Research of Economic and Financial Problems · Ethiopia (Addis Ababa)

This mixed-methods study in Addis Ababa, Ethiopia, compared 446 households (223 displaced and 223 non-displaced) to investigate the effects of urbanization-induced displacement on economic capital and food security. Evicted households showed a 72.7% lower likelihood of achieving economic capital security and 93.4% reduced odds of maintaining food security compared to non-evicted households, indicating significant negative differences.

Christina Frendo · Urban Geography · Canada (Montréal)

This study analyzed how urban agriculture contributes to green gentrification in Montréal. Based on interviews with planners, developers, and community actors, and discourse analysis of municipal policy documents, it showed that ecological initiatives are prioritized over housing, and sustainability fixes reconcile progressive rhetoric with growth imperatives, leading to policy trade-offs that undermine housing affordability. These findings reveal how progressive governments reproduce structural injustices through their ecological transition agendas within the context of a housing crisis.

Rita de Cássia Lisboa Ribeiro, Cecília Rocha, Andhressa Araújo Fagundes · Urban Planning · Brazil

An integrative literature review investigated the potential of Community-Supported Agriculture (CSA) to promote food security in Brazil. CSA can ensure a decent income for family farmers, reducing social vulnerability, and shows significant potential for promoting food sustainability due to its strong influence from agroecology. However, CSA faces a significant limitation in the elitization of this movement, reflecting historical social inequalities where only a relatively small portion of the population can afford healthier food.

I Putu Gede Didik Widiarta, Dinar Anindyasari, Taufan Purwokusumaning Daru · Jurnal Ekonomi Pertanian dan Agribisnis · Indonesia (Bontang City)

This quantitative study surveyed 220 urban farming respondents in Bontang City, Indonesia, to analyze consumer behavior in adopting livestock waste as organic fertilizer for household agriculture. While knowledge (β=0.58; p<0.01) and environmental impact perception (β=0.47; p<0.05) significantly influenced adoption, major barriers included negative perceptions of livestock waste odor (62%) and limited access to processing technology (45%). These findings highlight significant challenges to the widespread adoption of organic fertilizers from livestock waste in urban areas.

Amjad Aljuhani, Rahaf Baghdadi, Wafaa Alzahrani, Deemah Aljuhani · · Saudi Arabia

This study examined the feasibility of vertical farming in Saudi Arabia, using mathematical optimization to identify optimal locations. A mixed-integer linear programming model, developed with AIMMS software, incorporated infrastructure compatibility, water availability, and energy consumption. Results identified seven optimal locations across five cities—Riyadh, Jeddah, Dammam, Tabuk, and Khamis Mushait—ensuring efficient lettuce production at minimized costs. However, challenges such as high energy requirements and initial investment costs persist.

Rico Yanuar Ardiansyah, Hamidah Hendrarini, Wahyu Santoso · Jurnal Ilmiah Sosio Agribis · Indonesia (Surabaya)

A study in Surabaya City, Indonesia, analyzed community participation in urban farming among 50 respondents from three farmer groups from April to June 2025, using Importance Performance Analysis. While urban farming performed optimally in ecological, socio-cultural, educational & tourism, and health aspects, the economic aspect showed the lowest performance and largest gap. This indicates a need for strengthening outcome management, market access, and community economic empowerment to optimize economic contributions.

Alifia Nur’ Annisa, Reo Sambodo · JIGA Journal Innovation in Green Agriculture · Indonesia (Yogyakarta City)

A quantitative survey study in Gondokusuman District, Yogyakarta City, Indonesia, conducted in 2025, analyzed the feasibility of urban farming and its contribution to household income using census sampling. The analysis, including R/C and B/C ratios, found that urban farming had an R/C ratio of 0.49 and a B/C ratio of -0.51. These results indicate that urban farming has not been effective in increasing household income, primarily serving as a supporting activity for household consumption, though it provides indirect benefits by fulfilling food needs and reducing expenditures.

Ayari G. Pasquier Merino, Simone Buratti · · Mexico (Mexico City)

This study analyzed the conditions and challenges in the logistics of transporting merchandise from production areas to commercialization spaces, using a case study of Mexico City’s peri-urban agricultural producers. Qualitative research, conducted from 2019 to 2022, involved 60 interviews with production and distribution project managers, a discussion workshop on transportation issues, and visits to production and distribution spaces. Results indicate that infrastructure and logistics for goods transportation are a key issue for the successful integration of small, peri-urban producers into urban markets. It was suggested that transport and logistics must be addressed for these producers to become viable economic actors.

Gonzalo Lizarralde, Sara Latorre, Neidy Clavijo, Benjamín Herazo, Manuel Pérez, Kevin Gould, Myriam Paredes, Elsa Monsalve, Nicolás Ordoñez, Roberto Burdiles, Claudio Araneda, Lisa Bornstein, Ricardo Dueñez, Adriana Patricia López Valencia, Oswaldo López, Andrés Olivera, Pedro Tex Martinez, Gloria Artze · Frontiers in Sustainable Food Systems · Latin America and the Caribbean

This study investigated the emergence, legitimization, and survival of alternative food systems in low-income settlements across Latin America and the Caribbean. Researchers conducted 340 interviews and 312 questionnaires, following 18 bottom-up initiatives related to food production, distribution, transformation, and consumption in urban and peri-urban areas of Colombia, Cuba, Ecuador, and Chile. Empirical results demonstrated the inadequacy of existing regulations and policies to comprehend the dynamic resistance occurring in the "in between" spaces of both identities and urban structure.

Rui Fu, N.Sureshkumar PP Narayanan, Umahdevi Jayamani, Li Lian Chew, Fadhlur Rahim Azmi, Veera Pandiyan Kaliani Sundram · Malaysian journal of consumer and family economics/Malaysian Journal of Consumer and Family Economics · Malaysia

This qualitative study used grounded theory methodology, collecting data from in-depth interviews and focus group discussions with 25 Malaysian consumers, to explore perceptions of urban farming's role in supply chain resilience. Consumers generally view urban farming as a vital strategy for resilience, influenced by environmental and social impacts, trust in local food, and community empowerment. However, significant barriers to widespread adoption include concerns about scalability and cost-effectiveness.

Caitlin Morgan · Gastronomica The Journal of Food and Culture · United States (upstate New York)

This study is a case study of Essex Farm, a full-diet Community Supported Agriculture (CSA) operation in upstate New York. The farm struggled to balance its ecological and social values with the economic imperatives and pressures of surviving in a competitive, capitalist market. Consequently, the farm's social fabric, critical to its initial success, began to fray over time.

Tri Astuti, Hasddin Hasddin, Asrul Asrul, J Jasman, Muh. Yani Balaka, Haydir Haydir, Alfian Ishak, Muhamad Idham Handa, Villa Evadelvia Ginal Sambari, Eva Safitri Maladeni · European Journal of Sustainable Development Research · Indonesia (Kendari City)

This study quantitatively investigated the contribution of urban farming to economic growth and environmental sustainability in Kendari City, Indonesia. Urban farming is the third-highest contributor to the city's gross domestic regional product, accounting for 10.66% of total economic output, yet the sector's overall growth fluctuates, and its direct economic impact is underreported. In terms of environmental performance, Kendari's energy consumption and CO₂ emissions exceeded Asian Green City Index thresholds, categorizing the city as "below average" in sustainability.

Sadiq Ur Rehman, Muhammad Adeel Mannan, Muhammad Ahsan Shaikh, Muhammad Uzair · Memoria Investigaciones en Ingeniería · Pakistan

In Pakistan, an IoT-based solar-powered smart vertical farming system was proposed to address agricultural challenges like water scarcity. A six-week trial cultivating cherry tomatoes showed the system achieved a 60-65% yield increase, 40% energy saving, and 28.57% water consumption reduction compared to traditional methods. However, limitations included the small trial size and lack of long-term environmental impact data, and scalability challenges such as cost, maintenance, and local restrictions need to be addressed for wider adoption.

Elias Nuwagaba, Murindwa Rutanga · East African Scholars Journal of Education Humanities and Literature · Uganda (Mbarara City)

This study explored how state-initiated, unplanned urbanization in Mbarara City, Western Uganda, affects the sustainability of urban farming and urban livelihoods. The research found that rapid, haphazard urban expansion, lacking strategic planning, has led to significant challenges. These include the emergence of slums, illegal land occupations, destruction of wetlands and riverbanks causing water pollution, and inadequate waste management, all negatively impacting public health and urban farming sustainability.