Research & reports

Câmara dos Deputados (Agência Câmara de Notícias) · Agência Câmara de Notícias, Câmara dos Deputados (Brasil) · Brazil

A Brazilian Chamber of Deputies news article reporting that Law 14.935/24 — originating from Bill PL 906/15 introduced by federal deputy Padre João — was published on July 29, 2024, creating a National Policy on Urban and Peri-urban Agriculture. Its stated objectives include expanding food security for vulnerable urban populations, putting unused urban and peri-urban land to use, generating alternative income for urban residents, linking food production to public procurement (schools, hospitals, prisons), supporting family farming and solidarity-economy organizations, promoting environmental education and organic farming, and encouraging reuse of organic waste and rainwater; implementation is to be decentralized across federal, state and municipal governments, civil society and educational institutions.

Hall S.M., Tikku V., Heiger-Bernays W.J. · Environmental Health Perspectives, 131(11):115001 · Global

Examines equity and safety in urban organic-waste cycling through a case study of waste-to-compost activities and legislation in four US cities. It warns that contaminants such as pesticides, lead, and PFAS and inconsistent regulation can worsen racial inequities in access to urban farmland and safe compost, and recommends justice-oriented policy with multilingual education and proper waste disposal.

Alves, D., Villar, I., Mato, S. · Environmental Science and Pollution Research (Springer), 31(7):9873-9885 · Spain / Europe

A study comparing methodology, bulking agents, and compost quality across community composting centres (CCC) and community gardens used by local governments to treat biowaste. It shows how population density and the presence of green areas determine the siting of decentralized local composting infrastructure.

Coulibaly S.F.M., Aubry C., Provent F., Rousset-Rouvière S., Joimel S. · Environmental Research Letters, 18(7) · Global

A review synthesizing existing research on how far green roofs can support urban biodiversity, framed by their design and modes of use. It finds green roofs can provide habitat for soil organisms and pollinators as well as plants, but that the effect depends strongly on design such as substrate depth and vegetation diversity, and recommends integrating soil communities into construction guidelines and increasing heterogeneity at roof and landscape scales.

Sokolowski A.C., Álvarez V.E., Mangiarotti A., Gonçalves Vila Cova C. · Agroecology and Sustainable Food Systems · Argentina (Buenos Aires)

In Buenos Aires peri-urban family farms, TAPE surveys and soil measurements showed that self-defined agroecological farms outperformed conventional ones on soil health indicators including aggregate stability and organic carbon.

Riaño-Herrera D.A., Varela-Martínez D.A., Chenet J.G., García-García D.A., Díaz-Verus S.D. · Sustainable Cities and Society · Colombia (Bogotá)

This case study analyzed rooftop organic agriculture in Bogotá over 11 months, documenting an 82.1% relative yield from 336 harvested vegetables and estimating food autonomy potential for over 11,000 families through 432 projects.

Royer H., Yengue J., Bech N. · ScienceDirect · Global

Systematic review of biodiversity impacts of urban agriculture globally, comprehensively analyzing agriculture's role in urban ecosystems.

· Biomass Conversion and Biorefinery · Global

Examines decentralized in-vessel composting as an efficient technology for managing biodegradable solid waste.

· Agronomy · Global

Investigates the degradation of municipal waste through vermicomposting using a combination of Eisenia fetida and Lumbricus rubellus.

· Frontiers in Sustainable Food Systems · Global

Studies discarded tea waste as a low-cost, sustainable substrate for oyster mushroom cultivation, assessing biological efficiency and nutritional quality. Demonstrates reuse of an agricultural waste stream for cheap mushroom production.

· Current Issues in Tourism · International

Analyzes the push and pull motivations of international volunteer workers (WWOOFers) who participate in labour and exchange on organic farms.

· Frontiers in Sustainable Food Systems · Mexico (Queretaro)

Shows how urban agroecology enhances agrobiodiversity and resilient, biocultural food systems in the semi-dryland, medium-sized city of Queretaro, Mexico.

Kizza-Nkambwe S., Mpewo M., Kasima J. S., Mfuranzima K. · Sustainable Environment · Mukono, Uganda

Assesses compost quality from a waste composting facility in Mukono municipality, central Uganda, analysing physicochemical parameters and heavy metals and arsenic in mature compost.

Dorr, E., Hawes, J.K., Goldstein, B., Fargue-Lelièvre, A., Fox-Kämper, R., Specht, K., Fedeńczak, K., Caputo, S., Cohen, N., Poniży, L., Schoen, V., Górecki, T., Newell, J.P., Jean-Soro, L., Grard, B. · Agronomy for Sustainable Development · Global

A citizen-science study collecting data from 72 urban agriculture sites across France, Germany, Poland, the UK and the USA to analyze yields and resource use. Most plots yielded between 0.5 and 2 kg/m².

Mustafa Ali, Lenny Koh, Adolf Acquaye, Jonathan R. Leake, Jacob Nickles, Toby P. Evans, Gareth Roberts, Douglas Kemp · The International Journal of Life Cycle Assessment · United Kingdom (Sheffield)

This study conducted an integrated environmental and economic assessment of organic peri-urban horticulture using primary data from a farm in Sheffield, UK. A hybrid life cycle assessment (LCA) found that the global warming potential (GWP) for case study tomatoes was 3.53 kg CO2-eq, which was 1.87 times higher than imported Spanish tomatoes. Economic analysis showed that the marginal increase in the prices of tomatoes and courgettes from the case study farm was 4.6 and 5.15 times less than the market prices, leading to the conclusion that the studied production system is economically and environmentally sustainable compared to the existing scenario.

Myeong Seok Jeong, Mina Lee, Chaw Su Lwin, Kwon-Rae Kim · 한국토양비료학회지 · Korea (Jinju)

This study investigated heavy metal concentrations in soil and crop leaves from 23 urban gardens in Jinju, Korea, to assess suitability for cultivation. While average concentrations of As, Cd, Cr, Cu, Ni, Pb, and Zn generally did not exceed Korean guidelines, the Geoaccumulation Index indicated ongoing contamination by Cd, Cu, Pb, and Zn. A significant amount of Pb was introduced into some soils from the atmosphere, and continuous monitoring for heavy metals in urban garden soils is required for food safety.

Phạm Thanh Vũ, Võ Quang Minh · Plant Science Today · Viet Nam

A study in Cai Rang District, Can Tho City, Viet Nam, assessed aspects and designed adaptive models for urban agriculture using data collection, farmer surveys, statistical analysis, and FAO land suitability assessment. It found that growing green vegetables, fruits, decorative plants, orchids, and raising cattle is the most effective model. This model creates jobs, boosts income, supplies clean food, provides greenery, recycles waste, and reduces pollution, supporting sustainable agricultural options for the area.

Alex Salviano da Silva, Célia Regina Batista dos Santos · Revista Macambira · Brazil (Irecê)

This study investigated the contributions of interdisciplinary interventional actions, mediated by organic garden construction, to public school students' teaching and learning processes and their interest in environmental education within the context of remote education in Irecê, Brazil. Using a qualitative, interventionist action research methodology, activities integrating subjects like Biology, Mathematics, Geography, History, and Arts were conducted remotely and in person. Findings identified significant changes in school management, suggesting new perspectives for environmental education, and students showed increased awareness of their actions concerning school and home environments.

Magda Beatriz de Almeida Matteucci · · Brazil (Trindade)

This case study characterized the diversity of agricultural products from family urban agriculture in Trindade-GO, Brazil, by applying 20 questionnaires to urban properties. Producers in Trindade adopt diverse production practices, notably cultivating lettuce, cilantro, kale, and chives. They primarily use simple, ecological techniques for fertilization and pest/disease control, including organic fertilizers, to avoid harmful and costly agrochemicals.

Leigh Whittinghill, Major Ballard, Anju Chaudhary, Smriti Kandel, Caitlin Mullins, Pradip Poudel · HortScience · United States

This study analyzed runoff water quality from four different nutrient management treatments (conventional fertilizer, organic fertilizer, low-compost + organic fertilizer, and high compost) in raised beds and small plastic pool container plots in the United States. Water samples, collected monthly, were analyzed for pH, conductivity, color, turbidity, nitrate-nitrogen, ammonia-nitrogen, total phosphorus, and potassium. While significant differences existed between raised beds and container plots, these did not translate to meaningful water quality differences for most variables, except for nitrate-nitrogen. The conventional fertilizer treatment showed greater or more variable nutrient leaching than other treatments.

Yu. N. Katkov, N. A. Starostina, A. A. Romanova, М. К. Dzhikуa, I. O. Aidlin · Buhuchet v sel skom hozjajstve (Accounting in Agriculture) · Global

This article theoretically substantiates information and analytical support for city farm business plans, aiming to enhance food security by providing organic and eco-friendly agricultural products. It presents author's models for accounting and analytical systems and information support for city farm business plans. These models are intended to aid import substitution in agricultural products and contribute economically.

Şener Tarla, Assoc. Prof. Dr. Gülcan TARLA · Zenodo (CERN European Organization for Nuclear Research) · Global

This paper defines urban agriculture and discusses its benefits, including food production, resource contribution, and addressing economic, environmental, and social problems in cities. It notes that the global pandemic highlighted urban agriculture's importance for food safety, access, and ecosystem maintenance.

Gagas Purwo Adi, Nareswarananindya Nareswarananindya, Dian Pramita Eka Laksmiyanti · Tekstur · Indonesia (Surabaya)

This study proposes the application of sustainable architecture for urban farming facilities in Surabaya City, Indonesia, to address basic needs exacerbated by the COVID-19 pandemic. The design integrates communal spaces and cultivation facilities with household waste processing and efficient resource maximization. It utilizes a slab building form with indoor cultivation areas oriented towards the sun, supported by solar panels and rainwater harvesting systems, based on a combination of qualitative and quantitative methods.

Michele D’Ostuni, C. Stanghellini, A. Boedijn, Leonardo Zaffi, Giuseppina Pennisi, Francesco Orsini · Sustainable Cities and Society · Netherlands (Amsterdam)

The feasibility of using urine and greywater streams as nutrient solutions in a theoretical model of Building-Integrated Agriculture in Amsterdam was evaluated. Results showed it is feasible to use urine and greywater as nutrient solutions; however, treated urine had higher macronutrient concentrations than literature fertilizer recipes, requiring dilution with increasing amounts of greywater to match N or P concentrations. Consequently, P deficiencies in plants or excessive N concentration were found in the final wastewater-based nutrient solution.

Sunik Sunik, Sari Perwita R.I. · Jurnal BisTek PERTANIAN Agribisnis dan Teknologi Hasil Pertanian · Indonesia

This 2023 qualitative study in Indonesia analyzed the characteristics of organic urban farming actors and their considerations for choosing irrigation systems. The majority of respondents were of productive age, had a high school education, and worked as civil servants, private sector employees, or entrepreneurs. Key considerations for selecting an irrigation type included complexity, time availability, and ease of implementation.