Research & reports

Lauren Strumos, L. G. Beaman · Journal for the Academic Study of Religion · Global

Drawing on interviews with 134 community garden members across eight countries, this article examines how individuals, both religious and nonreligious, understand and enact moral relationships with other terrestrial beings at their community gardens. It frames the community garden as a place constituted by human and more-than-human relationships, showing how people make sense of the world from where they are situated, with or without reference to religion or spirituality. Gardeners' relationships are organized into three experiential modes — gardens as places of connection, as places of control and human intervention, and as places of world-repairing or mending the Earth — which are not mutually exclusive and span the diverse lifestances of individual gardeners.

Dawan Arkini Challam · Asian Research Journal of Agriculture · Global

A low-cost vertical farming system was built from 90 mm PVC pipes arranged in a three-tier frame, using soil as the primary growing medium, to grow strawberries (Fragaria × ananassa) under a semi-controlled microclimate created by 50% shade netting during the vegetative stage. Shading reduced transpiration stress and improved moisture retention, promoting leaf development, and removing the shade at the onset of flowering increased floral initiation and the number of flowers per plant, attributed to improved light availability. This stage-specific light management raised leaf, flower and fruit counts and yield by combining features of open-field and protected cultivation, though the abstract does not report the number of plants tested or whether the trial was replicated.

Nwanaforo E., Obasi C. N., Akande I. O., Nduka J. K., Offor C. C., Abdulai P. M., Udom G. J., Orisakwe O. E. · Biological Trace Element Research · ナイジェリア（オウェリ・アバ・ポートハーコート）

A study of lead, cadmium and copper in urban agricultural systems in three industrial-area Nigerian cities (Owerri, Aba and Port Harcourt), assessing spatial distribution, bioaccumulation and health risks using both deterministic and stochastic (Monte Carlo) approaches. Atomic absorption spectrophotometry found soil concentrations following Pb > Cu > Cd in Owerri and Port Harcourt but Pb > Cd > Cu in Aba, while fish and vegetables followed Pb > Cd > Cu at all three sites. The deterministic assessment found cadmium's incremental lifetime cancer risk exceeded the US EPA acceptable threshold of 1×10⁻⁶ at every site for every sample examined, identifying cadmium as the metal of greatest concern.

Kerstetter K., Roberts K. J., Trent R., Koch P. A., Casey C., De Jesus-Martin M., Trinidad A., Mampara J., Bacon B. · Journal of Nutrition Education and Behavior · 米国

A pilot study testing whether a multicomponent school garden and nutrition education intervention increases actual school lunch consumption. Students in grades 1–5 from matched pairs of public schools (one high-poverty and one low-poverty intervention school, each paired with a comparison school) were observed with the System of Observational Cafeteria Assessment of Foods Eaten over 13 days across 28 lunch periods, with consumption defined as the percentage of each entrée and side salad eaten. Students at intervention schools consumed 47.5% of the entrée and 44.1% of the entrée plus side salad, against 34.5% and 31.2% at comparison schools; adjusted models showed 0.13 (P = 0.006) and 0.11 (P = 0.01) more portion units consumed, with no significant treatment-by-pair interactions. The authors conclude that a cluster-randomised trial is warranted.

Ruma Chowdhury · Asian Journal of Advances in Agricultural Research · Bangladesh

A survey of urban agriculture in three Thanas (administrative wards) of Dhaka, Bangladesh — Bashabo, Gulshan, and Pallabi — examined the location, patterns, and processes of the practice. The survey found various types of urban agriculture in Dhaka, including vegetable gardens, ornamental plants, floriculture, pigeon and bird keeping, and dairy and goat farming. For most people it was found to be a hobby motivated by the aesthetic appeal it brings to houses and surroundings, with some residents growing fresh, chemical-free vegetables and fruit in their backyards. The city's agro-climatic conditions were described as well suited to flowers and foliage plants, floriculture was characterized as a new industry in Bangladesh, and dairy farming was reported to be common across every ward amid rising demand for milk.

Akhil S Anand, Hannes Pravida, Fredrik Fossan-Waage, Tormod Skorpe Skjolden, Giulia Robbiani, Younes Zahraoui, Emil Wolff Anthony, Jayaprakash Rajasekharan, Sissel Torre, Knut Asbjørn Solhaug, Sebastien Gros · Frontiers in Horticulture · Global

A paper on vertical farming — a controlled-environment agriculture system — examines its potential integration with energy markets. It states that vertical farming's economic viability is constrained by high capital and operational costs, a substantial share of which is energy expenditure, and explores how vertical farms could participate in day-ahead, balancing, and flexibility energy markets by adjusting lighting and climate-control energy use in response to market signals, potentially reducing costs and generating additional revenue. It identifies gaps in understanding of plant responses to variable lighting as a critical barrier to implementation and illustrates these integration challenges through small-scale laboratory experiments.

Esther Reyna Molina, María Xóchitl Astudillo Miller, Yanik I. Maldonado-Astudillo, Ricardo Salazar · Discover Sustainability · Global

A systematic review using PRISMA 2020 methodology examined social innovation and sustainable entrepreneurship practices in the agri-food sector as responses to socio-environmental resilience challenges facing small-scale rural producers and local food systems. It characterized these practices, evaluated their impacts across sustainability dimensions, and identified success factors and barriers. Studies on social innovation predominated over those on sustainable entrepreneurship, with experiences distributed across Europe, Africa, Asia, Oceania and the Americas. The initiatives analyzed included social agriculture, community gardens, inclusive agribusiness models, women's cooperatives and regenerative agroecological projects, with overall positive effects reported for social inclusion, community empowerment, market access, income diversification and improved environmental practices. Facilitating factors included cross-sector collaborative governance, local leadership and the capacity to combine heterogeneous resources; barriers included poorly adapted regulatory frameworks, dependency on external funding, and tensions between economic and socio-environmental objectives. The review concludes that hybrid practices combining social innovation and sustainable entrepreneurship contribute significantly to rural producers' socio-environmental resilience when embedded in favorable institutional environments and supported by public policy and legal frameworks.

Quinton J, Nesbitt L, Connolly JJT, Wyly E · Urban Studies · カナダ（バンクーバー・カルガリー）

Green gentrification describes how greening a neighbourhood — with parks, community gardens and the like — can draw in higher-income households and displace or exclude marginalised residents; the authors note this has rarely been tested empirically, and that the literature has focused almost exclusively on urban neighbourhoods even though the desire for green space is often cited as a reason households move to suburbs. Surveying 104 households in gentrified downtown Vancouver and suburban Calgary new-build neighbourhoods, the study finds green factors were of similar importance to non-green factors such as safety, scenic views and ambience (and, in Vancouver, proximity to entertainment and transit). Proximity to green space mattered more than overall neighbourhood greenness, and private green space mattered more in the suburbs. Greening, in other words, is not the sole driver, and green-gentrification research needs to widen its geography beyond dense city environments.

Burton M, Margerison C, Nanayakkara J, Worsley A, Booth A · BMC Nutrition · オーストラリア（全国調査＋ビクトリア州）

School gardens are an effective strategy for food literacy and for promoting healthy eating and environmental health, yet inadequate funding, time and training stop many schools implementing or properly using one. This mixed-methods study surveyed 111 Australian primary school staff online and interviewed 13 Victorian primary teachers. Ninety per cent of respondents worked at a school with a food garden, but how well it was used varied widely. Responsibility for managing and maintaining the garden fell mainly on students and classroom teachers, with some schools relying heavily on volunteers. Healthy eating and environmental sustainability were the usual focus, and gardens also taught life and social skills — but many teachers reported the garden was poorly integrated into the curriculum. Time and funding were the most commonly reported barriers, though many schools showed resilience by drawing on existing community connections and adopting cost-reducing practices. The authors conclude that targeted teacher training, leadership support, community involvement and cost-reducing strategies would help.

Birhanu MW, Negussie ZT · The Scientific World Journal · エチオピア

A PRISMA-based review synthesising peer-reviewed articles published between 2015 and 2025 on the status, challenges and opportunities of home and urban vegetable gardening in Ethiopia. It frames urban and home-based gardening as a practical response to food insecurity, malnutrition and environmental degradation in rapidly urbanising areas where the search for better opportunities has driven rising unemployment and limited access to nutritious, affordable food. The barriers it identifies — limited access to land and clean water, gendered barriers to women, limited technical knowledge, inadequate extension services and weak institutional support — all hinder production and sustainability. It further notes that widespread irrigation with untreated wastewater poses significant health and environmental risks through heavy-metal contamination and soil-transmitted infectious disease. Opportunities such as using vacant urban lots, promoting vertical gardening and supporting local seed production remain untapped; government support for urban gardening has grown recently but its implementation remains inconsistent. The review also identifies a significant geographical gap within the existing literature.

Hoque MN, Rana ML, Gilman MAA, Pramanik PK, Islam MS, Punom SA, Rahman R, Hassan J, Rahman MS, Ramasamy S, Schreinemachers P, Oliva R, Rahman MT · Environmental Monitoring and Assessment · バングラデシュ・ダッカ／ガジプール

A shotgun metagenomic study motivated by how little is known about the microbial communities and antimicrobial resistance (AMR) profiles of rooftop and surface garden soils in Bangladesh, and their potential role as reservoirs and disseminators of AMR, despite the growing expansion of urban agriculture. Twenty-seven soil samples were sequenced — 7 from Dhaka rooftop gardens, 6 from Dhaka surface gardens, 8 from Gazipur rooftop gardens and 6 from Gazipur surface gardens. The work identified 88 antibiotic resistance genes (ARGs), of which 19 (21.6%) were shared across all sites, and found significant differences in resistome composition by garden type (p = 0.04). Rooftop soils harboured more ARGs (Dhaka 50, Gazipur 48) than surface soils (Dhaka 40, Gazipur 41) and were dominated by glycopeptide resistance genes, collectively 62.43-74.07% of ARGs; rooftop soils were also enriched in efflux pumps (adeF, 45.21% of rooftop ARGs) and the ribosomal-protection oxazolidinone resistance gene O23S (62.13% in Gazipur rooftops). Surface soils instead featured more genes mediating antibiotic inactivation, such as CATA (11.64% in Dhaka surface gardens) and fosBx1 (5.94% of surface ARGs).

Agure E, Kihagi GW, Muok EMO, Sorgho R, Danquah I · Journal of Health, Population and Nutrition · ケニア・シアヤ郡

A qualitative study of a home gardening intervention in Siaya county, rural Kenya, undertaken because home gardens are promoted as a climate change adaptation strategy in sub-Saharan Africa but the lived experience of them is less documented. Between September and November 2023 the authors ran two focus group discussions with stakeholders (n = 5) and implementers (n = 8), plus 30 in-depth interviews with male (n = 5) and female (n = 25) beneficiaries, using purposive sampling and semi-structured guides; data were transcribed verbatim and analysed by inductive content analysis mapped along the proposed impact pathways. Participants articulated a good understanding of the trainings and valued them as an occasion for knowledge exchange, and the adoption of tailored garden structures, organic gardening and food preservation created feelings of fulfilment, women's empowerment and family peace. Challenges included water scarcity, ineffective pesticides and long distances between beneficiary households. Perceived benefits were increased income, cost savings and increased dietary diversity.

Liz Ignowski, John Luis Lagdameo, Liel Gonzalez, Arma Bertuso, Pepijn Schreinemachers · Urban Agriculture & Regional Food Systems 11(1) · Philippines (Quezon City, Metro Manila)

A quantitative survey of 300 urban food producers in Quezon City, one of the 17 cities of Metro Manila, examining who practises urban agriculture, the methods and technologies used, the challenges met and the benefits gained. Production is mainly small-scale and subsistence-oriented, with commercialisation limited except among those with access to agricultural land. Self-produced food does increase access to fruit and vegetables, but participation reflects economic vulnerability rather than food sufficiency, and both scale and commercialisation depend strongly on land access — a structural barrier in dense cities. The authors conclude that urban agriculture in Quezon City acts as a safety net rather than an income source, while also providing enjoyment and stress relief, and that urban food-security policy should be realistic about the limited role of urban food production.

Paul Emile Tchinda, Thi-Thanh-Hiên Pham · Canadian Geographies / Géographies canadiennes 70(3) · Cameroon (one large and one medium-sized city)

Urban agriculture appears in many sustainability agendas yet has been ignored in the public policies of many African countries. Combining multi-scale mapping (city and neighbourhood) with semi-structured interviews in one large and one medium-sized Cameroonian city, this study tests how well those techniques characterise urban agriculture for local decision-making. Mapping from 5-metre SPOT satellite imagery gives a general grasp of the spatial distribution of practices, but crop types, emerging entrepreneurial practices and the temporality of crops are invisible to it and surface only through field mapping and interviews. Echoing critical remote-sensing scholarship, the authors propose a methodological framework for profiling urban agriculture and argue that the choice of research method shapes our understanding of it, so it should be made with each city's specific characteristics in mind.

Md. Nur Alom Sarkar Mithun, Saifur Rahman, Md. Asifur Rahman, Md. Hasan Sabit, Joseph L. Donaldson, Shonia Sheheli · Urban Agriculture & Regional Food Systems 11(1) · Bangladesh (Mymensingh — Kewatkhali and Aqua)

A study of perceived barriers among 100 randomly selected rooftop gardeners in Kewatkhali and Aqua, Mymensingh, Bangladesh, interviewed with a structured protocol between September and November 2023 and analysed with descriptive statistics, rank order, correlation coefficients and multiple linear regression. Every participant perceived substantial barriers. The most prominent concern was the complexity of the technologies involved; neighbours' negative attitudes ranked least significant. Age, rooftop garden area, income, experience, contact with extension media and gardening knowledge were all negatively and significantly related to perceived barriers, with garden area and knowledge the strongest predictors in the regression. The authors argue that research, demonstrations, extension activity and training to build residents' skills and understanding are the way to lower those barriers.

· Wikipedia · Global

This article describes green roofs as roof structures covered with vegetation and growing media that provide stormwater retention, insulation, urban heat island mitigation, and biodiversity benefits. Installation costs vary widely by system type, from $108-248/m2 for extensive systems to $355-2,368/m2 for intensive systems, with long-term economic benefits such as extended roof lifespan and increased property value offsetting high upfront costs.

· Wikipedia (English) · Global

According to this English Wikipedia article, expanded clay aggregate (LECA) is produced by heating clay to around 1,200C in a rotary kiln, causing trapped gases to expand into a porous, rounded structure, available in sizes from 0.1mm to 25mm and densities of 250-510 kg/m3 (up to 500 kg/m3 for large LECA boulders). It offers thermal insulation (thermal conductivity as low as 0.097 W/mK), acoustic performance, moisture and fire resistance, and in hydroponics serves as a growing medium providing root aeration while retaining water and nutrients.

· Wikipedia (English) · Cuba

According to English Wikipedia, organoponicos emerged as urban farming in Cuba during the 'Special Period' after the 1989 Soviet collapse cut off chemical inputs, responding to a food crisis in which daily per-capita calorie intake fell from 2,900 in 1989 to 1,800 by 1995. As of 2009 over 35,000 hectares were in use in Havana alone, producing 280 grams of fruit and vegetables per resident per day, with the Havana workforce growing from 9,000 in 1999 to 23,000 in 2001 and over 44,000 by 2006.

· Wikipedia · Global

The English Wikipedia article 'Permaculture' defines it as an approach to land management and design based on observing flourishing natural ecosystems. Franklin Hiram King introduced the term 'permanent agriculture' in 1911, and Bill Mollison and David Holmgren coined 'permaculture' with the 1978 publication of 'Permaculture One'. It outlines three core ethics (care of the earth, care of people, and setting limits to population and consumption), Holmgren's twelve design principles, and practices such as hugelkultur, sheet mulching, and companion planting.

· Wikipedia · Cuba

This Wikipedia article covers Cuba's 'Special Period' economic crisis following the Soviet Union's collapse. Oil imports fell to about 10% of pre-1990 levels, GDP shrank 35%, and imports and exports both fell over 80%. Agricultural production fell 47%, construction fell 75%, and manufacturing capacity fell 90%, driving the need for agricultural transformation.

· Wikipedia · Cuba

This Wikipedia article on Cuban agriculture states the Soviets provided 63% of Cuba's food imports and 90% of its petroleum before 1990; after the collapse, agricultural production fell 54% between 1989 and 1994. By 2002, 35,000 acres (140 km2) of urban gardens produced 3.4 million metric tons of food, 90% of Havana's fresh produce came from local urban farms, and by 2003 more than 200,000 Cubans worked in the expanding urban agriculture sector. More recently, cooperatives and family farmers manage about 69% of Cuba's agricultural land.

· Wikipedia · Cuba

This Wikipedia article on the Cuban economy states Cuban GDP declined at least 35% between 1989 and 1993 due to the Soviet collapse and loss of Eastern Bloc trade. Liberalized agricultural markets, letting state and private farms sell above-quota production at free-market prices, were introduced in October 1994. Reforms from 2011 onward expanded usufruct leasing of fallow state land to residents, with more than 150,000 farmers registered by 2012 leasing land from the government to grow surplus produce.

· Wikipedia (スペイン語) · Cuba

This Spanish-language Wikipedia article on Cuba's 'Special Period' states GDP contracted 36% between 1990 and 1993 following the Soviet collapse, and daily caloric intake fell from 2,845 kcal in 1989 to 1,863 kcal in 1994, below the recommended minimum of 2,100-2,300 kcal. Loss of access to Soviet oil drove a shift to permaculture and organic agriculture (the rise of organopónicos) with help from international technicians. Recovery began in 1994, with GDP reaching 1990 levels again by 2007.

Global Network of Lighthouse Farms (Wageningen University & Research) · Global Network of Lighthouse Farms (Wageningen University & Research) · Cuba

This profile of Organopónico Vivero Alamar from Wageningen University's Global Network of Lighthouse Farms describes a UBPC (Basic Unit of Cooperative Production) founded in 1997 by 5 cooperative members, starting as an 800 sqm manually irrigated tree nursery. It has since grown to 10.14 ha with 150 cooperative members, 42 of them women, including nurseries, a 0.45 ha greenhouse, a rustic lab for breeding entomopathogens, a mycorrhizal fungi propagation center, and small-scale fruit and vegetable processing facilities. The page notes the farm has had to close due to COVID-19-related economic hardship and wildfires.

· Wikipedia · Global

The 'Forest gardening' URL now redirects to a section within Wikipedia's merged 'Agroforestry' article. Per that section, forest gardening is a low-maintenance, perennial, woodland-modeled food production system practiced since prehistoric times in the tropics; horticulturist Robert Hart coined the term and adapted it for temperate climates in the 1980s. The article states Kerala, India has 'no fewer than three and a half million' forest gardens, citing one 0.12-hectare plot found to contain 23 young coconut palms, 12 cloves, 56 bananas, 49 pineapples, and 30 pepper vines.