Research & reports

Callan Hand, D. Barry Croom, James C. Anderson, Ashley M. Yopp, Aaron Golson · Career and Technical Education Research · United States

This phenomenological study investigated the motivations of non-traditional urban agriculture students of color to remain in agriculture. Findings suggest that while systematic instruction in agricultural sciences and positive local youth organization experiences contribute to a favorable perception of agriculture, they do not necessarily lead to a career preference for agriculture among these students. Furthermore, urban students of color perceived that the FFA Organization above the school level is not inclusive of them.

M. Kühn, Geisa Zanini Rorato, Bruno César Euphrasio de Mello, Carolina Cristófoli Falcão · Ambiente & sociedade · Brazil

This study cataloged and analyzed federal and state urban agriculture (UA) laws in Brazil to understand their profile and association with urban planning. The findings indicate that Brazil lacks a coordinated national policy for urban agriculture. Furthermore, existing laws vaguely mention their interfaces with urban-policy legal frameworks and do not clearly address territorial challenges for UA implementation.

Olasumbo Olagoke-Komolafe, Joshua Oyeboade · International Journal of Multidisciplinary Futuristic Development · United States

This study comprehensively reviewed the viability, benefits, and challenges of urban aquaponics systems in the United States. Through a systematic literature review and content analysis, significant environmental benefits were identified, while economically, long-term benefits potentially outweigh initial setup costs. Challenges such as technical complexities, financial barriers, and the need for specialized knowledge are also notable.

Jessica Quinton, Lorien Nesbitt, James J. Connolly, Elvin Wyly · Urban Geography · Canada

This descriptive analysis identified gentrifying areas in Vancouver, Calgary, and Toronto, Canada, from 1996–2006 and 2006–2016, to determine the prevalence of greening interventions. The study found that greening, including parks, cycle lanes, and community gardens, frequently occurred before, during, and after gentrification. These results indicate that greening is common in gentrifying areas throughout the gentrification process, suggesting a need for a broader understanding of the relationship between urban greening and gentrification.

Fanxin Meng, Qiuling Yuan, Rodrigo A. Bellezoni, José A. Puppim de Oliveira, Yuanchao Hu, Rui Jing, Gengyuan Liu, Zhifeng Yang, Karen C. Seto · npj Urban Sustainability · Brazil (São Paulo)

A framework was developed to analyze the food-water-energy nexus of green roofs in data-sparse cities, integrating environmental costs and benefits. Testing this framework in São José dos Campos, Brazil, and Johannesburg, South Africa, revealed that green roofs are carbon neutral but net energy consumers from a life cycle perspective. São José dos Campos is a net water beneficiary, while Johannesburg is a net water consumer, and rainwater utilization, though saving irrigated water, requires 1.2 times more energy.

Martine El Ouardi, Françoise Montambeault · International Journal of Urban and Regional Research · Mexico (Mexico City)

This study of citizen-led gardens in Mexico City reveals that informal urban gardening becomes a practice disconnected from the state. Despite the Mexico City government's interest in regulating urban agriculture, gardeners are increasingly formalizing their practices independently. This disconnection is attributed to a weak institutional context, characterized by top-down policymaking and the city government's incapacity and unwillingness to effectively implement policies, leading to mistrust among gardeners.

Wenhao Zhu · Highlights in Science Engineering and Technology · United States (Chicago)

This paper focuses on the characteristics of vertical farms, using The Plant vertical farm in Chicago as an example to describe its design and performance, and analyze its advantages and design principles. The success of The Plant is attributed to saving raw materials and waste disposal costs through waste utilization, staggered electricity consumption, and insulated structures to maximize energy cost savings. However, while small-scale pilot projects of vertical farms have achieved some success, many constraints remain for scaling them up due to high construction and operation costs and high technical levels.

Sean M. Crotty · California History · United States (California)

Pascale Joassart-Marcelli's book "The $16 Taco" examines how food and power intersect to create landscapes of hunger and plenty in U.S. cities, using San Diego as a case study. It argues for the centrality of food in broader structural issues of social, political, and cultural inequalities, which manifest as material inequality. The book explores the impacts of food apartheid, a system of segregation that prevents certain groups from accessing nourishment, and explains the role of racist real estate practices in devaluing neighborhoods of immigrants and people of color.

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.

Sarah Dimick · Critique Studies in Contemporary Fiction · United States (Minneapolis)

This study reflects on guerrilla gardening and its narratives by intersecting Eleanor Catton’s novel Birnam Wood with descriptions of gardens at police killing sites in the greater Minneapolis metro area. It argues that guerrilla garden infrastructures sprout in the soil of highly unequal power, often in the wake of the fatal exercise of state power, and in the shadow of a foreshortened environmental future. These are DIY infrastructures constructed by people weathering entwined environmental, political, and economic crises in the 21st century.

Eri Saikawa, Erin Lebow-Skelley, Rosario Hernandez, Faith Flack-Walker, Leann Bing, Candis M. Hunter · Journal of Public Health Management and Practice · United States (Atlanta)

In Atlanta, Georgia, in-person and virtual Soil Screening, Health, Outreach and Partnerships (soilSHOPs) were implemented through a community-engaged partnership to screen soils for lead. These soilSHOPs informed best practices for increasing awareness about lead exposure and led the US Environmental Protection Agency to identify a Superfund site, confirming soil lead contamination.

Austin Thompson‐Spain, Kyle S. Bunds, Lincoln R. Larson, Bethany B. Cutts, J. Aaron Hipp · Sustainable Development · United States

This scoping review examines funding and financing mechanisms for nature-based solutions and their impact on social equity in the United States. It finds that market-driven nature-based solutions can contribute to an inequitable distribution of urban ecosystem services. The distribution of benefits is influenced by local contexts, decision-making inclusion, and payment mechanisms, suggesting disparities in access for diverse and marginalized populations.

Posgrado en Ingeniería Agrícola y Uso Integral del Agua, Universidad Autónoma Chapingo, Chapingo, Estado de México, México, Hugo Antonio Fernández, R. Salazar, Posgrado en Ingeniería Agrícola y Uso Integral del Agua, Universidad Autónoma Chapingo, Chapingo, Estado de México, México, E. Fitz-Rodríguez, Posgrado en Ingeniería Agrícola y Uso Integral del Agua, Universidad Autónoma Chapingo, Chapingo, Estado de México, México, I.L. López-Cruz, Posgrado en Ingeniería Agrícola y Uso Integral del Agua, Universidad Autónoma Chapingo, Chapingo, Estado de México, México, Uwe Schmidt, Dennis Dannehl · Tecnología y Ciencias del Agua · Mexico (Mexico City)

Yields and water productivity of romaine lettuce and cherry tomatoes were investigated in 13 urban gardens in Mexico City. Lettuce yields ranged from 0.10 to 1.20 kg m-2 with water use efficiency from 0.21 to 2.93 kg m-3, while cherry tomato yields ranged from 0.25 to 3.40 kg m-2 with water use efficiency from 0.32 to 5.52 kg m-3. Irrigation in these gardens is empirically done using potable water, showing an excess water supply of 0.27 to 0.4 m3 m-2 for a complete cycle of lettuce and cherry tomatoes.

R Verissimo, Silvana Aparecida Alves, Adalberto da Silva, Ana Maria Lombardi Daibem · Risco Revista de Pesquisa em Arquitetura e Urbanismo (Online) · Brazil (Bauru)

This research investigates green and gray infrastructure in Bauru/SP, Brazil, comparing controlled access allotments (Pq. Residencial Paineiras and Jardim Shangri-Lá) with favelas (Ferradura Mirim and Jardim Nicéia). It aims to study green infrastructure as an expression of sociospatial inequalities perpetuated by urban planning. Through analyses and cartographies, the study evaluates the current urban panorama and challenges for mitigating social, environmental, and urbanistic inequalities.

Nicholas Greatens, Nick Klejeski, Les J. Szabo, Yue Jin, Pablo D. Olivera · Plant Disease · United States (Minnesota)

In July 2021 and July-October 2022, rust disease was observed on all 20 lemongrass plants in a community garden near Mankato, Minnesota, USA, causing 5-50% leaf loss. Molecular analysis of the rust fungus identified it as Puccinia cesatii or a closely related species. Although P. cesatii has been reported on Cymbopogon species, lemongrass is not generally considered a host, indicating an unusual infection.

Sinan Kordon, Patrick Miller · ArtGRID - Journal of Architecture Engineering and Fine Arts · United States (Roanoke)

A survey in five disadvantaged neighborhoods of Roanoke, Virginia, identified primary reasons for non-participation in community gardening. Using descriptive statistics, T-test, and factor analysis, the study found that "theft and damage," "difficult access," "too much effort," and "no personal interest" were the main deterrents. These findings highlight specific barriers to public involvement in community garden projects.

Seohyun Kim, Carlos Almeida Peña · Journal of Student Research · United States

This study critically evaluated existing initiatives like SNAP, HFFI, and urban agriculture for addressing food deserts in the United States, which affect approximately 19 million individuals. Through a literature review and interviews, the research found that these programs, while offering some positive impact on food insecurity, largely fail to directly address the fundamental issue of distance and systemic accessibility to supermarkets. The study proposes enhancing public transit and online delivery platforms as comprehensive solutions.

Manoj Misra · Culture Agriculture Food and Environment · Canada

A qualitative study of Community Supported Agriculture (CSA) participants in the greater Edmonton region of Canada examined how this local food initiative promotes ecological citizenship. The study concluded that discursive and structural limitations prevent the Edmonton CSA community from achieving meaningful diversity and addressing social justice concerns within its realm.

Nehiby Alcántara Nieves, Rosa María Larroa Torres · Iztapalapa(en línea)/Iztapalapa · Mexico (Mexico City)

This article identified agroecological practices in 10 urban gardens (hu) in Mexico City and their relationship with the construction of food citizenship. Data was collected through interviews with garden managers and users, and participant observation. The study found a tendency to prioritize responsibilities over rights within these urban gardens.

Charles Achcar Chelala, Cláudia Maria do Socôrro Cruz Fernandes Chelala · DELOS Desarrollo Local Sostenible · Brazil

This article analyzes the urban and peri-urban agriculture (UPA) in Macapá, Amapá, Brazil, focusing on existing commercialization channels to identify the relationship between urban food production and city supply. The study aimed to pinpoint difficulties, limitations, and expansion capacity of UPA. It concludes that despite a diversity of accessible channels for UPA, short commercialization channels like direct sales and open-air markets remain the primary outlets for production, indicating challenges in expanding commercialization beyond these traditional methods.

Nathália Miasato Pimont, Rafael Alves Santomauro, Carolina De Abreu Pianta, Pablo Menegon Castilho, João Gabriel Neves Viana, Giovanna Carolina Silva Boscolo, Letícia Santos Balbino, Juliana Izidoro Lucas, Aline Ticiani Pereira Paschoal, Italmar Teodorico Navarro, Regina Mitsuka‐Breganó, Fernanda Pinto Ferreira · Ensaios e Ciência C Biológicas Agrárias e da Saúde · Brazil (Londrina)

This study, conducted in Londrina, Paraná, Brazil, between 2019 and 2020, analyzed community garden vegetables for parasites and irrigation water for *Escherichia coli*. *Escherichia coli* and total coliforms were detected in 66.7% (6/9) of water samples. Parasites of *Ascaris*, *Ancylostoma*, and *Entamoeba* genera were identified in vegetable samples, demonstrating contamination of both community garden vegetables and irrigation water.

Ana Tereza Souza Domingos, Carolina Oliveira Mesquita, Emiliano Lôbo de Godoi, Thiago Augusto Mendes · Laws · Brazil

This bibliographical and documentary research analyzed the effectiveness of public food security policies in Brazil between 2012 and 2022, also considering urban agriculture as an alternative. It concluded that public policies were gradually weakened, and from 2019 to 2022, the Brazilian government discouraged food policy implementation. Consequently, Brazil faces food insecurity and hunger due to disjointed policies, the pandemic, and an economic crisis.

Natalie Call, Elizabeth Silber, E. Binney Girdler · Journal of Agriculture Food Systems and Community Development · United States

This GIS-based study of Kalamazoo, Michigan, analyzed how accessibility to different types of food access points — full-service grocery stores, farmers markets, community gardens, food pantries, and convenience stores — differed between low-income and higher-income census tracts. All full-service grocery stores were accessible via bus routes, but 11% of residents in low-income areas lacked adequate access, living beyond the 0.25-mile walkable distance to bus routes. "Positive" access points such as community gardens, food pantries, and farmers markets were found to be concentrated in areas that already had grocery store access, whereas "negative" access points — convenience and dollar stores, which provide lower-quality, highly processed food — filled the access gap in lower-income areas instead. More than twice as many low-income residents had walkable access to convenience stores as higher-income residents, with 81% of those convenience stores located within low-income tracts.

Stacy M. Philpott, Azucena Lucatero, Sofie Andrade, Cameron R. Hernandez, Peter Bichier · Insects · United States (California)

This study examined how native plant species richness, garden management, and landscape composition affect the abundance and richness of native and non-native bees, ladybeetles, ants, and ground-foraging spiders in urban community gardens (urban agroecosystems) in California, United States. Native plants — about 10% of species but only about 2.5% of plant cover — had little influence on arthropods overall, with the only significant effect being a negative one on non-native spider richness, likely reflecting native plants' low cover. Garden size increased native and non-native bee abundance and richness and non-native spider richness; floral abundance increased non-native spider abundance and native and non-native spider richness; mulch cover and tree/shrub abundance increased non-native spider richness; and natural habitat cover increased non-native bee and native ant abundance but was associated with fewer native ladybeetle species. The study concludes that native plant richness does not strongly influence the abundance and richness of beneficial arthropods.

Lorien Nesbitt, Daniel L. Sax, Jessica Quinton, Leila M. Harris, Camilo Ordóñez Barona, Cecil Konijnendijk · Ecology and Society 28(4): art29 · Canada (Metro Vancouver, Greater Toronto Area)

An online survey of 51 urban greening practitioners in Metro Vancouver and the Greater Toronto Area. Most respondents defined green gentrification as the displacement of vulnerable residents caused by new or improved green space that attracts wealthy in-movers and raises property values. The largest group identified greening itself as the main driver of green gentrification, while a minority saw greening as a secondary factor alongside other systemic drivers. Practitioners cited multiple barriers to addressing it - limited institutional capacity, limited access to data and information, policy or mandate restrictions, and a lack of engagement tools - showing a gap between practitioners' concern and what they can act on in their day-to-day work.