Research & reports

Luis Carlos Estupiñán Aponte · Repositorio Institucional UPTC · Global

This project explores urban and peri-urban agriculture as a viable, though not comprehensive, solution to food vulnerability in urban areas, where access to food is often limited by purchasing power. It applies circular economy and agroecological principles, utilizing available resources for garden assembly, processing plant waste into fertilizers, and employing botanical and microbiological controls for phytosanitary management. The initiative emphasizes broad community participation, knowledge exchange, and the creation of social spaces to enhance food and nutrition security.

Fabèkourè Cédric Kambiré, Sheick Sangaré, Rayangnéwendé Adèle Ouédraogo, Adama Zanga Ouattara · Journal of Agricultural Chemistry and Environment · Burkina Faso (Bobo-Dioulasso)

This study investigated the chemical quality of soils across six market gardening sites in Bobo-Dioulasso, Burkina Faso, considering the impact of fertilizer use and site location. Soil samples from 30 farms in urban, semi-urban, and rural areas were analyzed for carbon, total nitrogen, available phosphorus, and pH, revealing that soil chemical parameters, except for available K, were affected by site location. Urban farm soils were less acidic, and long-term organic matter application improved soil chemical quality, though soil quality tended to decrease with area expansion.

Jiangxiao Qiu, Hui Zhao · EDIS · Global

This overview identified eight ecosystem services generally attributed to urban agriculture, including food production, microclimate regulation, stormwater retention, and social-cultural values. However, the study found that quantitative evidence for many of these ecosystem services, especially intangible ones, is scarce. It suggests that while urban agriculture could be integral to green infrastructure, further consideration is needed for types, technology, management, and potential tradeoffs.

Akhi Akter, Md. Forhad Hossain, Jubayer-Al Mahmud, Nasrin Sultana, Md Maruf Hasan, Tahira Begum · Journal of Agroforestry and Environment · Bangladesh (Dhaka)

This study investigated the impacts of vermicompost, sawdust, and cowdung on cauliflower growth and yield on a rooftop in Dhaka, Bangladesh, from November 2019 to July 2020. The experiment found that vermicompost (10 t ha-1) combined with recommended chemical fertilizers resulted in the highest yield (19.75 t ha-1) and benefit-cost ratio (3.33). The results indicate that rooftops are suitable for cauliflower production using vermicompost.

Iván Nocua, Karen del Pilar Galindez, J. Cordero, Astrid Del Pilar Ardila Bernal, Julián Serna, Omar David Guzmán, Cristian Fernando Camargo Muñoz, Mauricio Parra‐Quijano · Agronomía Colombiana · Colombia (Bogotá)

An urban garden was established within a greenhouse at the Universidad Nacional de Colombia, Bogotá campus, to investigate the effects of weeds and compacted soil in a biointensive approach. Over a two-month measurement period, 13 weed species were identified, with Veronica spp. being the most represented, and Poaceae family plants predominant within the orchard. While soil properties improved with the biointensive method and organic material addition, the presence of weeds highlights challenges and limitations in establishing urban gardens.

Abigail Schoneboom, Daniel Mallo, Armelle Tardiveau · Journal of Classical Sociology · United Kingdom

This sensory ethnographic study, using pinhole photography, explored how time is experienced by unemployed volunteers at a community garden in the north-east of England. It found that the garden's ability to provide meaningful time is rooted in its food-growing and composting cycles, as well as enduring elements like mature trees and volunteer-made structures. The study argues that urban community gardens offer an "elongated present" that fulfills individuals and sustains community and nature.

Jaime Del Río, Victoria Noelia Cabral, María Victoria Sordini · Salud Ciencia y Tecnología - Serie de Conferencias · Argentina

This undergraduate thesis conducted a socio-environmental diagnosis of community urban horticulture spaces in the General Pueyrredon district, Buenos Aires province, Argentina. The diagnosis identified their current situation, main limits, and potentialities, and characterized and geographically located different projects. This facilitated understanding how these experiences relate to urban social dynamics.

Richard Beach · Journal of Adolescent & Adult Literacy · Global

This study analyzed the perceptions of three English teachers and three students participating in two high school environmental clubs, using a critical inquiry systems thinking framework. Interviews explored their views on the purposes, outcomes, norms, and beliefs of energy/transportation, agriculture/food production, and economic systems impacting climate change. Teachers and students critiqued these systems for leading to negative climate change outcomes and engaged in sustainability practices like planting school gardens and supporting recycling/composting.

Chelsea Rozanski, Michael C. Gavin · Journal of Agriculture Food Systems and Community Development · Canada (Calgary)

This reflective essay documented the cultivation process of a production urban farm in Calgary, Canada, through a collaboration between the University of Calgary, Root and Regenerate Urban Farms, and the Young Agrarians. Over one growing season (May-September 2021), approximately 7,000 lbs (3,175 kg) of 48 vegetable varieties were harvested from nine urban spaces totaling 0.26 acres. Produce was distributed to shareholders, market customers, chefs, and cooperatives, with 765 lbs (347 kg) donated to food security initiatives. The paper discusses the benefits and limitations of Small Plot Intensive Farming and urban land-sharing strategies.

Marco Medici, Maurizio Canavari, Alessandra Castellini · Agroecology and Sustainable Food Systems · Global

This study designed and applied a cost-benefit analysis based on the Social Return on Investment (SROI) to five Community-Supported Agriculture (CSA) initiatives, addressing the lack of objective sustainability indicators. CSAs are local food supply chains characterized by member volunteer commitment, reduction of synthetic inputs in food production, and shortening of the supply chain. Findings revealed that the analyzed CSA case studies demonstrated a limited but positive socio-environmental performance compared to conventional food supply chains, thereby showing they can create real value in terms of social gains and mitigation of environmental impacts.

Ismed Setya Budi, Ismed Fachruzi, Mariana Mariana, Yusriadi Yusriadi, Muhammad Indar Pramudi, Helda Orbani Rossa · Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) · Indonesia (Banjarbaru)

This project addressed agricultural challenges in Bangkal Village, Banjarbaru City, Indonesia, where farmers face issues with soil fertility and seasonal flooding. The proposed solution involved transferring technology for making organic fertilizer using indigenous microbes (Trichoderma sp.) and aquatic weeds (kalakai and kayapu). Initial outreach and a workshop with 42 participants revealed farmers needed direct practical guidance. Ongoing field assistance enabled the "Bunga Padi" farmer group to produce packaged organic fertilizer for market and local use, with the aim of eventually marketing Bangkal-specific organic red rice.

Byunghoon Park, Jayoo Seo · Journal of the Korean Institute of Landscape Architecture · South Korea

This study designed and constructed a model garden at the Sejong National Arboretum, South Korea, to provide scientific data on the carbon-reducing functions of gardens. The experimental area was divided to analyze carbon reduction effects based on biochar amount, planting density, and plant species. The model garden incorporated rainwater utilization facilities and low-carbon certified materials, with the carbon reduction effect of each facility and construction method compared.

Chloé Duffaut, Florence Brondeau, Julien Gasparini · Urban Agriculture & Regional Food Systems · France (Ivry-sur-Seine)

This study tested the effects of feral pigeon guano as a fertilizer on cherry tomato plants in an urban environment on a rooftop in Ivry-sur-Seine, France. In June 2017, 15g of guano was added to 15 cultivation bags, while 15 control bags received only water. After 15 days, guano-treated plants were taller and tended to have more flowers, and the total number and mass of harvested cherry tomatoes were one to two times higher than the control. However, the average mass per fruit was not affected by the treatment. The study concluded that pigeon guano is an efficient local fertilizer for cherry tomato plants in urban areas.

Muh Abror · Suluh Abdi · Indonesia (Sidoarjo)

A community service project in Sidoarjo, Indonesia, aimed to empower the Aisyiyah branch community through organic urban farming using polybags. The project provided training in organic plant cultivation and verticulture, and developed organic nutrient production from household waste to ensure fertilizer availability. The initiative successfully produced starter fertilizers, including biolactobacillus and Local Microorganisms (MOL).

Medardo Wilfredo Blanco Villacorta · Revista de Investigación e Innovación Agropecuaria y de Recursos Naturales · Global

This review examined general aspects of vermicomposting to explore its use in treating organic solid waste and enhancing urban agriculture. It analyzed 99 papers published between 2000 and 2022, retrieved from Google Scholar. The review found that vermicomposting is a low-cost ecotechnological process where earthworms transform organic solid waste into vermicompost, making it suitable for recycling organic waste in cities and supporting urban agriculture sustainability.

Mengdi Dai, Xiangfeng Tan, Ziran Ye, Bojun Li, Yi Zhang, Xuting Chen, Dedong Kong · Environmental Technology & Innovation · Global

This study analyzed 15 soil samples from three sampling sites (original soil, after a seven-year natural cycle, and after a seven-year microcirculation system) to investigate soil properties, bacterial communities, and their relationships in a rooftop farm. The microcirculation system was shown to effectively improve the soil environment and bacterial community by increasing total nitrogen and total organic carbon contents by approximately 2 and 3.5 times, respectively.

Bethaney Turner · · Global

This chapter explored human-soil relations in urban home and community gardens through ethnographic fieldwork. While biodiverse soil offers direct health benefits, the presence of contaminated, toxic soils, prevalent in lower socio-economic neighborhoods, was shown to expose inequities in access to safe gardening sites and hinder the realization of potential therapeutic benefits. It argues that the therapeutic benefits of gardens are best realized when humans cultivate attentive relationships with myriad multispecies companions.

Muhammad Abbi Fahrezy Sutikno, Dwi Rahmawati, Yonika Sindiana Prahmani, Amnan Haris, Tiara Dwi Wulandari, Desy Fitria Astutianingtyas · Jurnal Pemberdayaan Masyarakat · Indonesia (Semarang)

Tugurejo Village in Semarang City, Indonesia, faces disaster risks due to land use changes. A community service program was implemented to enhance the climate village program in this area. Through qualitative data collection and program formulation, four programs were successfully developed: urban farming, urban aquaculture, rainwater harvesting, and waste bank programs.

· Building Materials and Engineering Structures · United States

This study examines the significance of seeds in defining sustainability within urban agriculture, which is viewed as an agricultural operation in a non-rural setting emphasizing communication, education, and farm goods. Using Gray-associated analysis, the study evaluated various crops, finding that spring beans received the highest rank and autumn beans the lowest.

Jordi Guimera Garcia, Natalie Bray, Yowhan Son, Aleah L. Butler-Jones, Sara Perl Egendorf, Jenny Kao‐Kniffin · Journal of Urban Ecology · United States (New York City)

In New York City, a study investigated plant growth (tomato, pepper, kale) in soils constructed from four municipal composts mixed with sediments from the NYC Clean Soil Bank, to assess the potential for safe urban agricultural soils. While Clean Soil Bank sediments enhanced plant growth when mixed with BRL compost, they also negatively impacted tomato aboveground biomass production by 29% in LES compost and tomato plant height by 18% in QBG compost, indicating variable effects depending on compost properties.

Abrham Kassa Ejigu, Kumelachew Yeshitela · Frontiers in Sustainable Cities · Ethiopia (Arba Minch City)

A study assessed Arba Minch City's governance capacity to integrate resource-oriented sanitation technology with urban agriculture. The findings indicated that the city's capacity is hindered by a lack of systematic monitoring, fragmented policy tools, and inadequate public sector participation. There is no single government body responsible for integration, and a behavioral gap exists among users in adapting to new technologies and recovered organic fertilizer.

Mahbuba Ferdous · Asian Journal of Advances in Agricultural Research · Australia (Armidale)

This case study investigated non-chemical weed management strategies in a small-scale vegetable garden in Armidale, Australia, through observation and an in-depth, unstructured interview with the garden's convener. Growers primarily used mechanical and cultural methods, including mulching, hand weeding, tillage, and grazing, to manage weed infestation. While mulching with wood chips and hand weeding were considered more effective in minimizing weed competition during critical crop development periods, they could not reach a satisfactory level. Further improvements by integrating several approaches simultaneously are needed for more effective and economical weed control.

Ernst‐August Nuppenau · PLoS ONE · Global

This article proposes an ecological economics orientation for peri-urban development, focusing on land use planning, local food, and entropy. Based on a mathematical model and control theory, it presents an operational concept to minimize negative externalities within a given population, aiming to assure space for urban agriculture and enable organic matter recycling. It notes that current unhealthy developments and market-oriented city expansions have limited the scope for peri-urban farming, advocating for regional planning based on organic matter recycling.

Remigio Paradelo · Urban Agriculture & Regional Food Systems · Global

The book "Urban soils. Principles and practice," edited by Andrew W. Rate, provides abundant information on the properties and functioning of urban soils, covering topics such as their genesis, spatial variability, functions, contamination, and remediation techniques. The book also details general soil science concepts and serves as a potential textbook. It notes that urban soils exhibit higher spatial variability than naturally formed soils, driven by human decisions.

Juliana Marcela Santos Calderón, Julián David Coral Sanabria, Olga Ximena Aguilar Galvis · Innovando En La U · Global

This study investigated the effect of different amounts of vermicompost (0%, 20%, and 40%) on Batavia lettuce cultivation. It found that 20% vermicompost accelerated germination on the first day (P0.05). By day 40, 20% vermicompost influenced plant height and leaf number, resulting in an average height of 5.44 cm and 7.2 leaves by day 46 (P<0.05). These findings suggest that 20% vermicompost is the most recommended amount for Batavia lettuce.