Research & reports

María Virginia Maiza, Joan Muñoz‐Liesa, Anna Petit‐Boix, Verónica Arcas‐Pilz, Xavier Gabarrell · Resources Conservation and Recycling · Global

A life cycle assessment compared three human urine management strategies for nitrogen fertilizer production: an artificial wetland, an on-site lab-scale aerobic reactor (S2), and a centralized wastewater treatment plant. S2 showed the highest environmental impacts in 6 out of 8 categories, including high energy demand (750 kg MJ-eq) and ecotoxicity (602 kg 1.4-DCB-eq), although it offered an advantage in marine eutrophication. Upscaling S2 could reduce impacts and lower payback time, with nitrogen production exceeding 2.3 times the yearly demand for building tomato production.

Marthe L. Derkzen, Maitreyi Koduganti, Sheetal Patil, Parama Roy · · India (Bengaluru)

Bengaluru has transitioned from a "Garden City" to a "Global Technology Hub," resulting in food production being pushed out and productive lands converted to residential and commercial uses. This urbanization has led to rising land values, sharpening inequalities, and recurrent water insecurity. In response, new forms of urban farming, such as kitchen gardens and community farms, have emerged to mitigate space constraints and meet local food aspirations. This chapter will use participatory mapping, interviews, film, and photography to explore how Bengaluru residents from diverse backgrounds perceive food as cultural connections, community feelings, and environmental resilience.

Jinrong Tong, Dongsheng Feng, Xia Wang, Min Wang, Mei-Lian Chen, Yanfen Chen, Yingqing Ma, Bo Mei, R. Chen, Mengfeng Gao, Siwen Shen, Hongkang Wang, Weiyi Zhang · Heliyon · China (Shanghai)

A study investigated pesticide residues and dietary intake risk in 7028 vegetable samples grown under modern urban agriculture in Shanghai from 2018 to 2021, analyzing 68 types of pesticides. Pesticide residues were detected in 29.21% of samples, with 0.47% exceeding China's national maximum residue limits (MRLs). The target hazard quotient (THQ) and hazard index (HI) for detected pesticides were all less than 1, suggesting there may be no obvious health hazard for residents.

Matthew L. Richardson, John Taylor, Megan J. Thompson, Anusuya Rangarajan, Mamatha Hanumappa, Neith G. Little · PLoS ONE · United States (Northeastern United States)

This online survey of 394 urban growers, primarily in the Northeastern United States, profiled growers and assessed urban agriculture's state, identifying needs and challenges. Most growers were white (non-Hispanic), under 45, well-educated but without agriculture degrees. Urban agriculture was dominated by small non-profits and home/community gardens. A critical finding is that urban growers face diverse barriers, with the most common being land availability and long-term access in urban areas, and many reported low revenue or operating at a net loss.

Engelbertus Nggalu Bali, Cornelia Theresia Asamal, Vanida Mundiarti · Early Childhood Education Development and Studies (ECEDS) · Indonesia

This descriptive qualitative study observed the transformation of a campus teaching program strengthening the Pancasila student profile in early childhood education in Alor Regency, Indonesia. Data was collected through observations and interviews with 3 principals and 1 teacher in 4 driving schools. The study found that challenges included media limitations, unstable electricity and network conditions, and teachers' understanding of modules and assessments.

Lucas López Sosa, Gloria E. Casanova Molina · Revista Temas Sociológicos · Spain (Barcelona), Chile

This ethnographic study conducted in Barcelona and Santiago de Chile comparatively analyzed the social utilities, conflicts, and tensions faced in the daily management of urban community gardens. The study found significant symbolic and practical similarities between the gardens in both cities, despite geographical and cultural differences, highlighting their value as tools for urban and social regeneration.

Anushi Anushi, A. Krishnamoorthi, Jitendra Chaurasia, Bijay Kumar Baidya, Abhishek Singh, ­ Sapna, Vijay Kumar, Anushka Singh · Journal of Scientific Research and Reports · Global

This review explores the historical evolution and diverse models of urban farming, highlighting their contributions to food security, environmental sustainability, and community resilience. Challenges faced by urban farmers include limited space, soil contamination, regulatory hurdles, and access to resources.

Mary Mattingly · Intellect eBooks · Global

This essay shares two research practices stemming from the author's seven-year engagement with extractive supply chains for specific objects. Swale is a floating food forest that uses the common law of the waterways as a loophole to do what was illegal on common land, highlighting governance challenges within existing systems.

Anubhav Pradhan · South Asia Research · India

This article analyzes the recalibration of justice for agrarian communities along the Yamuna in Delhi. Following a 2015 ban on edible crop farming by India's apex environmental court, the Delhi Development Authority has conducted multiple demolition drives for nearly a decade to evict farmers and clear land for redevelopment. The ongoing contentions involving farmers, planning agencies, and the judiciary in this region are symptomatic of the erosion of social justice in urbanizing India.

Nyayu Khodijah, Ratna Santi, Riwan Kusmiadi, Ivan Rismunandar · Jurnal Agritech · Global

This research investigated the effect of nutrient type and lead (Pb) absorption on water spinach growth in a Kratky hydroponic system over 30 days. Plants were exposed to PbSO4 concentrations of 50, 100, 150, and 200 mg/L, with standard hydroponic (ABmix) and alternative nutrients. The study found that nutrient type significantly affected most growth parameters, with ABmix performing better than alternative nutrients. Crucially, no growth disturbance was observed due to PbSO4 contamination, and the combination of Pb concentration and nutrient type did not significantly affect growth or production, except for the number of leaves.

Juan Camilo Fontalvo Buelvas, Maria Teresa Pulido Silva, Miguel Ángel Escalona Aguilar · Magazine Portal Bibliotech Digital (Universidad Nacional de Colombia) · Global

This bibliographic review identified the main problems of urban agriculture and actions for sustainability. The study found that the primary deficiencies in urban agriculture are inadequate management practices, a lack of organization, and absent or inefficient public policies. Key leverage points for change include agroecology, policies for land access and sustainable financing, and dissemination processes.

Alberto Matarán-Ruiz, David Fanfani, Josefa Sánchez Contreras, Miguel Ángel Escalona Aguilar · · Central America; Europe

This chapter examines bioregional food systems and territorialization processes in peri-urban agricultural areas, using three case studies from Central America and Europe. It notes that the historical co-evolutionary relationship between cities and surrounding farmlands weakened in modernity due to the global capitalist market, which reduced food to a commodity. The study highlights current problems while exploring how inherited relationships are being revived to adapt urban bioregions to climate emergency and resource scarcity.

Nevin Cohen, Michael H. Stein, Annie Hancock, Alfonso Morales · Urban agriculture · United States

This paper examined two housing authority-led urban agriculture projects in New York City and Denver, Colorado, highlighting their multidimensional benefits such as skill-building and community cohesion. While these projects improved residents' daily experiences, the study noted that social problems persist despite new interactions. The analysis emphasized the need to consider both stated and implicit goals in urban agriculture ethics, acknowledging that attempts to harmonize competing claims are at the root of urban agriculture practices.

Andrea Baier, Christa Müller, Karin Werner · Neue Ökologie · Global

This study discussed the significance of the new urban garden movement for sustainable urban restructuring, focusing on community garden practices over the past two decades. It examined how the movement is integrated into the governance of urban climate crisis policies, how it utilizes this framework, and to what extent the autonomy of gardens as free spaces and commons can be maintained under these circumstances. The findings suggest that the autonomy of urban gardens may be difficult to maintain when integrated into climate crisis policy governance.

Rosângela Míriam Lemos Oliveira Mendonça, Samantha de Oliveira Nery, Ediméia Maria Ribeiro de Mello · MIX Sustentável · Brazil

This paper presents a methodology applicable to sustainable community actions, developed from seven years of experience with low-income communities in a Brazilian community garden. The methodology is based on participatory action research, systemic design, agroecology, food sovereignty, and solidarity economy principles. The study demonstrates the importance of integrated work among the elements of the quintuple helix model (society, government, industry, academia, and environment), but it does not detail specific challenges or limitations regarding governance.

ke Chinelo Gloria, Eze H.C, Obasi C.J, Euphemia Afoma Ikegwuonu, Okonkwo Ngozi Nonyelum · International Journal of Research Publication and Reviews · Nigeria

To evaluate the water quality of the Obibia River in Amawbia, Anambra State, Nigeria, water samples were collected monthly and assessed for bacteriological and physicochemical parameters. The study identified multiple bacterial isolates, including Escherichia coli, Klebsiella pneumoniae, Salmonella enterica serovar Typhi, and Vibrio cholerae. Notably, E. coli, S. Typhi, and V. cholerae were frequently observed in both rainy and dry seasons. These findings suggest the necessity of adequate treatment before use and periodic evaluation of the water's quality for drinking and urban agricultural purposes.

كريمة على حسن محمد, سوزان يوسف أبو الفضل, عزه أحمد صادق على · Journal of Educational Sciences - Qena Faculty of Education · Global

A study using a descriptive approach identified obstacles to the educational role of community education schools. Findings revealed obstacles across educational (e.g., low student achievement), social (e.g., low encouragement of community initiatives), cultural (e.g., low cultural level of staff), technological (e.g., lack of computer teachers), economic (e.g., weak family economic level), health (e.g., weak attention to a healthy school environment), and recreational roles (e.g., lack of school gardens).

Ion Martínez Lorea · Revista Española de Sociología · Spain (Pamplona)

This article uses Henri Lefebvre's concept of concrete utopia to analyze the practices of community urban gardens in Pamplona-Iruña, Spain. It interrogates their potential and limitations in responding to various situations of social vulnerability and rethinking the relationship between the rural and the urban.

Lena Katharina Mietz, Bárbara Civit, Alejandro Pablo Arena · Agroecology and Sustainable Food Systems · Global

This review focuses on the present state and methodology of life cycle assessment (LCA) to evaluate the sustainability of urban agriculture. It notes that while urban agriculture is seen as a potential alternative for a resilient food system, existing case studies are mostly incomplete and lack diversity. Further research is needed, especially the integration of social and economic perspectives, to achieve a comprehensive scientific understanding.

Alexandra Zink, Paul J. CaraDonna, Kelly Larsen, Amy M. Iler · Ecosphere · United States (Chicago)

This study investigated how urbanization relates to pollination by growing 240 plants (squash and tomato) across six sites with varying urbanization levels in Chicago, Illinois. For tomatoes, the magnitude of pollen limitation increased with greater impervious surface, indicating more pronounced pollination deficits at highly urbanized sites. For squash, evidence of pollen limitation was found only at the most urban site, with a weak trend of pollen limitation of fruit set (but not seed set) increasing with impervious surface.

Simone Trimmel, Stefan Wagner, Laura Feiner, M. Feiner, Daniela Haluza, Rebecca Hood‐Nowotny, Ulrike Pitha, Thomas Prohaska, Markus Puschenreiter, Philipp Spörl, Andrea Watzinger, Elisabeth Ziss, Johanna Irrgeher · Environmental Science and Pollution Research · Europe

A study of urban gardens in Vienna, Austria, building on a previous study of eleven gardens in the city that found elevated lead (Pb) levels in some soil and plant samples. This work examined the elemental composition of soil and plants from two of the affected gardens one year after compost amendment. ICP-MS analysis of tomato fruit skin, pulp and seeds showed only minor variations in elemental composition unlikely to affect food safety, whereas radishes showed a tendency toward contaminant accumulation in root tips and leaves. Washing lettuce significantly reduced levels of potentially toxic elements including Be, Al, V, Ni, Ga and Tl, underscoring the importance of washing garden produce before consumption; compost amendment was associated with reduced Zn, Cd and Pb levels in radish bulbs. Lead isotope ratios in soil and spinach leaf samples from the earlier study, assessed by MC-ICP-MS, showed a direct linkage between the Pb isotopic signatures in soil and spinach leaves, supporting their use as tracers of Pb sources in the environment.

Fauziyyah Nur Rachmadillah, Mochamad Yusuf · Jurnal Teknik ITS · Indonesia

In Kampung Ngemplak Sutan (Kampung Sayur Organik), Surakarta, Indonesia, sustainability of the local urban farming initiative was evaluated using primary data from observation, questionnaires and interviews plus secondary data, analyzed with Multidimensional Scaling and Rapid Appraisal for Sustainability (MDS/RAPS). The socio-cultural dimension scored highest at 75.44 ("very sustainable"), while the economic dimension scored lowest at 56.71 ("fairly sustainable"); the study also noted that urban farming there functions mainly as a side activity that receives limited attention and that community participation has been declining.

Alessandro Silva de Oliveira, Gustavo Carvalho da Rocha Lima Martins, Gonzalo Oviedo, Lucas José de Oliveira Gomes · Revista Tecnia · Brazil

A 2024 paper reports on an educational practice with elementary school students at a community garden at IFG-Anápolis, Brazil, framed around "omnilateral formation" and critical environmental education. Through periodic visits, workshops, and discussion sessions, the practice addressed problems arising from the use and consumption of pesticides in food. It reports that the critical environmental education approach was significant in revealing the latent meanings behind an agribusiness food market based on unrestrained pesticide use.

Agnès Fargue‐Lelièvre, Jason K. Hawes, Benjamin Goldstein, Lidia Poniży, Erica Dorr · Bulletin of the Atomic Scientists · Global

This 2024 essay in the Bulletin of the Atomic Scientists states that urban agriculture brings many benefits to its participants but is not guaranteed to be more climate-friendly than conventional agriculture. It adds that there are some specific steps urban farmers can take to cut carbon emissions.

Linh Dinh Hong, Khiem Phuong Huu, Diep Vu Bach, Tien Vu Quyet · Transactions of the Chinese Society of Agricultural Machinery · Vietnam

Using a national Vietnamese household living-standards survey dataset, this study applies a difference-in-differences (DID) approach combined with propensity score matching (PSM-DID) to assess the short-term impact of the COVID-19 pandemic on urban agricultural households in Vietnam. It finds that while the pandemic did not significantly affect household income, it reduced household expenditure -- both total household consumption and per-capita consumption -- and increased the number of household members participating in agricultural work as a short-term response.