Research & reports

G Charan Tej, P. Lakshmi, B. Savitha, A Meena · International Journal of Agriculture Extension and Social Development · India

A study in Telangana state, India, examined the adoption of terrace gardening as a response to urban space scarcity. Adoption was found predominantly at a moderate level (48.33%), driven by enthusiasm, a desire for chemical-free produce, and cost-saving motivation, with education, health consciousness, and media exposure (notably YouTube) playing roles in uptake. Among specific practices, potting-mixture proportions and harvesting at recommended stages showed high adoption, while removing virus-infected plants ranked lower, possibly reflecting limited awareness of disease spread.

Constantine Manolchev, David Watson, Laura A. Colombo, Patrick Elf, James Scott Vandeventer · · United Kingdom

A chapter examines the role of technology across the European 'agrifood' system, an umbrella term for the agriculture, horticulture, food, and drink sectors. Placing the dysfunctional consequences of making economic growth the driver of food-system organization in historical context, it shows through a case study of a daffodil farm in South West England that when technology is deployed as an engine of efficiency, unbridled growth, and profit maximization, it vastly improves productivity through worker quantification—time, motion, and output tracking—while transforming worker-nature relationships in exploitative ways. By contrast, when used to prioritize non-exploitative, collaborative relationships, technology can support sustainable well-being and ecological production, illustrated through three alternative food network cases: a UK community garden, a UK Community Supported Agriculture scheme, and a network of social agricultural cooperatives in Italy.

Gaspard Ntabakirabose, Maniriho Festus, Tuyisenge Jean Claude, Harold Ogwal, David Mwehia Mburu · International Journal of Environmental Protection and Policy · Africa

A study of smallholder vegetable- and fruit-growing households in Kigali City and Musanze District, Rwanda (Gasabo, Kicukiro, Nyarugenge and Musanze districts), used multistage purposive sampling on a population of 1,085 households, surveying 112 respondents. Of 14 factors examined, 10 positively influenced urban farming production and 4 influenced it negatively. Crops were grown in bags, baskets, hanging baskets, old tires, pallet gardens, open ground, trellises and window-box fences, doing well even in small plots enclosed within household compounds. Urban farming contributed to malnutrition control, household savings and food security, but was constrained by small plot sizes, limited farming knowledge and technology, crop maturation time, lack of capital, low awareness, housing arrangements and inadequate infrastructure.

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.

Lorenta In Haryanto, Tri Yuni Hendrawati, Darto Darto, Febri Yani, Firgi Adha Listanto, Dimas Yoga Pradipta Pratama · Abdimas Jurnal Pengabdian Masyarakat Universitas Merdeka Malang · Indonesia

A community-service report on introducing solar-powered water pumps for hydroponic systems with the farmer group Hidroponik Generik (HG) in Pesanggrahan, Indonesia, from April to October 2024, including training and assistance in vertical hydroponic technology and solar power generation. An 800 Wp solar panel supplied 1,600 Wh daily, powering pumps for 12-13 hours and cutting electricity usage by 66%, reducing monthly expenses by 10%. Combined with the vertical hydroponic installation, farm income increased by 15%, and participants' understanding of solar technology improved by 45%.

Shu Hua Teoh, Gwo Rong Wong, Purabi Mazumdar · Innovations in Agriculture · Global

A review combining scientific literature analysis and interviews with urban farmers examined urban farming models including community, indoor, rooftop and vertical farms using techniques such as aeroponics, hydroponics and aquaponics. It found that sustainability and yield remain major challenges to fully realizing urban farming's potential, identifying limited land and water resources, pest and disease incidence, financial constraints on setup and maintenance, knowledge and skill gaps among participants, and a lack of effective collaboration between universities, government and industry as the key barriers.

Anant Bahadur, Anish Kumar Singh, Hare Krishna, Rajeev Kumar, V. K. Patel, Tusar Kanti Behera · Indian Journal of Horticulture · India

Over three years (2019-2022) at ICAR-IIVR, Varanasi, India, researchers grafted four brinjal cultivars and three tomato cultivars as scions onto the vigorous, waterlogging- and salinity-tolerant brinjal rootstock IC 111056 to produce dual-fruiting 'Brimato' plants. The Kashi Manohar scion combined with Kashi Aman or Kashi Chayan gave the highest brinjal fruit numbers, while Kashi Aman combined with the Kashi Sandesh rootstock hybrid gave the highest tomato fruit numbers; the Kashi Sandesh + Kashi Chayan combination produced the highest total fruit yield at 2.58 kg/plant, and Kashi Aman + Kashi Sandesh reached a cumulative yield of 5.98 kg/plant. Photosynthetic rate and chlorophyll fluorescence varied significantly by scion, with Kashi Manohar and Kashi Aman showing the highest photosynthetic rates, and grafted plants showed higher vitamin C and β-carotene content.

Rahul B. Hiremath, Sheelratan S. Bansode · Practice, progress, and proficiency in sustainability · India

This book chapter examines the use of treated urban wastewater to support agricultural resilience in Indian cities amid rapid urbanization that strains water supplies for farming. Using an interdisciplinary approach, it evaluates current practices, policy frameworks and stakeholder engagement to assess the practicality and efficiency of incorporating treated wastewater into urban agricultural systems, addressing both the potential benefits and the difficulties involved rather than reporting a specific measured outcome.

Karuniawan Puji Wicaksono, Setyono Yudo Tyasmoro, Akbar Saitama, Paramyta Nila Permatasari · International Journal of Environment Agriculture and Biotechnology · Indonesia

A study in Kedungkandang District, Malang City, Indonesia (May-September 2022) assessed agrotourism potential across four sub-districts using direct-observation survey and SWOT analysis, in an area with average temperatures of 22.7-25.1°C and humidity of 79-86%. Identified strengths included government-owned land available for agrotourism use, existing paddy-based agrotourism integrated with sheep farming and fisheries, a nearby Masked Village aerial-photography tourist site, multiple potential locations for agrotourism-based edutourism, and community enthusiasm. The study concludes that agrotourism development in Tlogowaru sub-district should be organized around two functions: lodging and trade, and agriculture, animal husbandry and fishery education.

Mélanie Douziech, Stefan Mann, Stefan Galley, Jens Lansche · Agronomy for Sustainable Development · Global

Urban agriculture is often associated with sustainable practices, but the diversity of systems classified as urban agriculture and limited information on their sustainability call that link into question. Drawing on 91 scientific papers, a study proposes a holistic classification of urban agricultural systems combining technical, social and economic characteristics, with economic production intensity and the intensity of cooperation among actors as key axes. One end of the scheme covers ground-based, open, socially motivated systems with high cooperation and low production intensity; the other end covers building-integrated, quasi-closed systems with high production intensity. Mapping sustainability claims from the literature onto the scheme associated "urban farming" with job creation, food safety, water savings and higher yields, and "urban gardening" with educational potential, biodiversity improvements and lower yields.

Takele Taye Desta · Veterinary Medicine and Science · Ethiopia

Based on in-depth interviews with seven key informants in the cities of Adama and Addis Ababa, Ethiopia, a study evaluates the significance of urban goat production, one component of urban agriculture, and ways to lessen its adverse impacts. Goats can thrive in limited urban open spaces, scavenge leftovers from homes and open markets, and browse on open public land; incorporated into urban agriculture, they can contribute to a circular economy, thrive on a limited supply of water and feed, and require less care and space. Goat farming is used to mitigate the adverse impact of climate change, and goats' active nature makes them better at avoiding traffic accidents; they can also be used to control bush encroachment. Urban goat farming improves land use efficiency and food security, and goats can be used for children's play and urban ecotourism. However, goats can harm urban green spaces, so goat production must be zoned to avoid this. The study concludes that urban goat farming could add a new dimension to urban food security, but that more empirical evidence needs to be generated to support its adoption.

Aji Saputra, Oekan S. Abdoellah, Gemilang Lara Utama · Local Environment · Indonesia

A commentary on the current state of urban agriculture implementation in large Indonesian cities, the initiatives underway and the mechanisms for pursuing stated goals. It identifies land scarcity, inadequate urban agricultural infrastructure, financial constraints, and regulatory and administrative problems as the major obstacles to implementation. It also states that urban agriculture improves quality of urban life by providing fresh, healthy food and fostering community engagement, and cites Singapore, New York and Ghana as examples showing the importance of policy support, innovation and community involvement.

Iara Rafaela Gomes · Sociedade & natureza · Brazil

A study examining agricultural activity, in particular family farming, in the Fortaleza Metropolitan Area (FMA) of Ceará State, Brazil. Drawing on primary and secondary data on producer profiles and agricultural and food-processing establishments in the region, it identifies key issues in production and food systems within the FMA. The study presents the production strategies used by family farmers, the challenges they face, and opportunities they identify, and argues that examining agriculture in metropolitan areas links socio-spatial and socio-environmental problems and points toward cross-sectoral public policy.

Olalekan Tolulope B. Aduloju, Olumuyiwa Bayo Akinbamijo, Abdullateef Iyanda Bako, Abdulfatai Olanrewaju Anofi, Kolade Victor Otokiti · Local Environment · Nigeria

This study analyzed the practice of urban agriculture (UA) in open spaces within the Ilorin metropolis, Nigeria, combining primary and secondary data collected through questionnaires, an interview guide, digital cameras, a UA survey form, and GPS. Main findings showed that 14.34 hectares of land (31.4% of it in the city core) was dedicated to UA in Ilorin, an area estimated as capable of helping at least 1,500 families escape poverty. Average Nearest Neighbour Analysis (ANNA) revealed that UA sites were clustered rather than randomly distributed. Mean analysis showed the dominant food staples grown at Ilorin UA sites were vegetables (3.09), maize (2.86), cassava (2.64), millet/sorghum (2.46), and yam (2.31). Access to land, failed harvests from pests and disease, price collapse, and adverse weather events were identified as the leading challenges affecting UA practice. The study calls for city-level integration recognizing the rights of the urban poor and of UA within Ilorin's land-use plan.

Jessica Ann Diehl · · Global

This chapter investigates urban agriculture in Singapore through a political ecology lens, examining food security from the perspective of traditional commercial farmers. Growing urban food demand and risks inherent in reliance on the global food system have spurred city governments to implement diversified strategies for integrating urban agriculture at different scales; Singapore, a high-earning city-state that imports 90% of its food, has set a target of raising domestic food production to 30% under its Singapore Green Plan 2030 "30 by 30" Grow Local target. The chapter questions whether this level of food independence is achievable if food production shifts away from traditional farming toward high-tech operations such as rooftop or vertical farms. Semi-structured qualitative interviews covered four topics: general farm practices, social networks, benefits and barriers, and livelihood alternatives. Findings were examined in the context of a rising generation of high-tech entrepreneurial farmers facing the challenge of meeting consumer demand against land and labor scarcity. The in-depth case study demonstrates that technology is only one driver, among many, of the sustainability of the local food system in Singapore, and traditional commercial farmers face pressure on their livelihoods as policy shifts toward high-tech production.

Priya Singh, Ramakrishna Bora, Asha Devi · International Journal of Bioscience and Biochemistry · India

This study evaluated the effectiveness of integrated nutrient management (INM) in enhancing brinjal (Solanum melongena L.) growth, yield, and soil fertility in urban agricultural settings in Jorhat, India. Given declining soil fertility and over-reliance on chemical fertilizers, INM — combining chemical fertilizers, organic manures, and biofertilizers — was tested as a sustainable alternative using a Randomized Complete Block Design (RCBD) with four treatments (control, chemical fertilizers, organic manures, INM), each replicated three times. Growth parameters (plant height, Leaf Area Index, number of branches) were measured, and fruit yield and quality were recorded at harvest; soil fertility indicators (pH, organic carbon, nitrogen, phosphorus, potassium) were analyzed at the start and end of the study. INM significantly enhanced growth, producing the highest plant height (112 cm), LAI (3.7), and number of branches (6.5). INM-treated plants produced 33% higher fruit yield (25.4 tons/ha) than the chemical fertilizer treatment and 66% higher than the control. Soil fertility improved in INM plots, with increases in soil pH (6.8), organic carbon (1.8%), and nitrogen, phosphorus, and potassium levels.

Lydia Bonney · · United States

Drawing on newspaper articles, books, scholarly journals, websites and one self-conducted interview, this paper examines several urban agriculture programs across Detroit's history. Analysis of past successes and failures of these programs argues that investing in urban agriculture today could address problems the city has long faced. The paper concludes that Detroit's particular landscape, community, and spatial disparities give it potential to become a world leader in urban agriculture.

K. O. das G. DIAS, M. C. UZEDA, A. C. A. [UNESP] Alves, M. dos S. F. R. de AZEVEDO · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil

In mid-2021, a 400 m² "productive backyard" (quintal produtivo) was set up at the Fazendinha Agroecológica km 47 in Seropédica, Rio de Janeiro state, Brazil, run jointly by Embrapa, UFRRJ, and PESAGRO-Rio, with four subareas for vegetables, unconventional food plants (PANC), fruit trees and annual crops, and egg-laying hens. Food production recorded over six months of 2021 demonstrated the plot's potential to counter food insecurity by supplying a healthy, diversified diet and generating extra household income through the sale of surplus produce.

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.

Nurul Hidayati, Pienyani Rosawanti, Djoko Eko Hadi Susilo, Fahruddin Arfianto, Hariyadi Hariyadi · Daun Jurnal Ilmiah Pertanian dan Kehutanan · Indonesia

This experimental and descriptive study examines the implementation of urban farming techniques — vertical gardening, hydroponics, potted plants (tabulapot), and cultivation in sacks and planters — in urban areas of Indonesia, focusing on household food security. Sweet potato was chosen for its ease of growth and environmental adaptability, with both tubers and leaves usable as vegetables. Regression correlation analysis found sweet potato productivity of 1.4 kg per 40 kg sack with 10 cuttings per sack, a strong positive correlation of 96.77% between tuber count and total weight per sack (y = 71.069x - 878.93), and a strong positive correlation of 83.05% between tuber count and individual tuber weight (y = 1.6985x - 9.87), indicating that more tubers did not reduce individual tuber weight. A household growing 10 sacks was calculated to have a potential yield of 14,000 grams (14 kg).

P.N. Ndlovu, Joyce Chitja, Temitope O. Ojo · Cogent Food & Agriculture · South Africa

This study surveyed 156 smallholder urban vegetable farmers in the Sobantu and Mphophomeni township areas of KwaZulu-Natal, South Africa, using a structured questionnaire and multi-stage sampling, and analyzed drivers of market participation and its level using descriptive statistics and a double-hurdle model. Of the 156 farmers, 127 were market participants and 29 were non-participants. A logistic model found market participation decisions were significantly influenced by credit use (p = 0.004), free inputs (p = 0.096), access to market information (p = 0.001), access to labour (p = 0.014), and smartphone ownership (p = 0.083). A fractional response model found the level of market participation was significantly influenced by age (p = 0.093), cooperative membership (p = 0.002), road condition (p = 0.001), storage (p = 0.016), and distance to input markets (p = 0.069).

Brent F. Kim, Sara N. Lupolt, Raychel Santo, Grace H. Bachman, Xudong Zhu, Tianbao Yang, Naomi K. Fukagawa, Matthew L. Richardson, Carrie Green, Katherine M. Phillips, Keeve E. Nachman · PLoS ONE · United States

A pilot study (2024, PLoS ONE) planted Darkibor kale seedlings at three urban and four rural farms in and around Baltimore City, Maryland, had farmers grow them using their usual practices, and analyzed harvested kale for carotenoids, vitamins C and K1, ten nutritional elements, and eight non-essential metals. Sample sizes were in some cases too small to yield statistical significance, but the study identified potentially meaningful differences between urban and rural kale: mean carotenoid and vitamin concentrations were 22-38% higher in rural samples, while mean concentrations of eight nutritional elements were higher in urban samples, by as much as 413% for iron. Most of nine non-essential metals were higher on average in urban samples, though lead and cadmium concentrations across all samples stayed below public health guidelines; for six elements, variance within urban or within rural farms exceeded variance between the two groups, suggesting urbanicity may not be the primary driver of some differences, and some urban-rural gaps were more pronounced than in prior research.

Mochamad Yusuf · Al-Masharif Jurnal Ilmu Ekonomi dan Keislaman · Indonesia

Focused on agriculture — one of the strongest sectors supporting Indonesia's economy — this descriptive paper (2024) examines the readiness of Central Java Province, the country's third-largest producer of agricultural output, to build a green economy while adopting a nature-conservation blueprint. Using secondary data collected and analyzed into author-formulated recommendations, the paper finds Central Java is pursuing green-economy and circular-economy practice through the agriculture sector via organic crop cultivation, urban farming, farmers markets, and environmentally friendly agricultural-product education, and concludes that maximizing this implementation requires supporting government regulation/legislation together with societal practice.

Héctor Ávila Sánchez · Investigaciones Geográficas Boletín del Instituto de Geografía · Global

This conceptual article examines periurbanization as one of the most dynamic territorial expressions in contemporary society, discussing the reconfiguration of food-production spaces in peri-urban areas that form part of metropolitan systems as a social and territorial process. It addresses proximity, the consolidation of short supply circuits, and new territorial forms such as city-region food systems and "agrarian parks" (parques agrarios) — a form found mainly in Europe that the article frames as a territorial innovation countering the disarticulation of peri-urban agrarian space under growing metropolization. It discusses the spread of cooperative-based forms (food hubs, cooperative supermarkets, shared workshops) and the roles of social movements, producer organizations, and public institutions in shaping peri-urban territorial governance, framed through solidarity economy and social justice.

Tiffanie F. Stone, Janette R. Thompson, Emily Zimmerman, Tássia Mattos Brighenti, Matt Liebman · Renewable Agriculture and Food Systems · United States

In the US Corn Belt near Des Moines, Iowa, researchers combined land-use visualization with producer surveys to examine a future scenario supplying 50% of a metropolitan population's dietary needs from local "table food" (fruit, vegetable and grain crops for direct human consumption) by 2050. Surveys were sent to 1,360 row crop and 55 specialty crop producers, yielding 316 and 25 eligible responses respectively. The scenario would require less than 3% of available agricultural land and roughly 130 additional producers, mostly in grain production. Based on producers' stated plans, local production could supply about 25% of residents' fruit, vegetable and grain needs, up from a 2% baseline. Row crop producers ranked food safety regulations as their strongest constraint, specialty producers ranked labor availability, and both groups cited crop insurance and processing facilities as important.