Research & reports

N. K. Fidelis, M. K. Winnie, W. K. Joyce, K. Juliana, Kotey Ashie Daniel, M. Scholastica, Mbijjiwe Jacob Kathure Catherine · Journal of Engineering in Agriculture and the Environment · Africa

In Nairobi, Kenya, stratified random sampling, field surveys and questionnaires were used to identify existing water sources and wastewater treatment systems and their reuse status, in an investigation of the potential for eco-friendly urban and peri-urban agriculture (EcoUPA). Of the 300 respondents interviewed, only 66 (22%) reused wastewater, and only 54 of those reused it for crop production. Ninety-eight respondents (33%) wanted information on wastewater treatment systems allowing reuse, and 124 (41%) were willing to pay for a new system. The findings indicate that limited urban water sources constrain the spread of urban and peri-urban agriculture.

Alexey Valerevich Vasilchikov · Eurasian Law Journal · Russia

A study of urban agglomeration development trends in the regions of the Russian Federation, drawing on analyses from various Russian sociological research schools, examines the differentiation between cities — including million-plus cities — competing for natural, demographic, financial, and investment resources. It finds that large agglomerations act as monopolists that in many cases hinder the successful development of medium-sized and especially small Russian cities, further worsening inequality in living standards and quality of life across localities throughout the Russian Federation.

Joseph Richmond Fianko, Mavis Korankye · West African Journal of Applied Ecology · Ghana

A study assessed the environmental and health impact of urban and peri-urban irrigated agriculture in Ghana by analyzing the physico-chemical and microbiological characteristics of irrigation water in the Greater Accra Region, calculating a comprehensive pollution index (CPI) and sodium adsorption ratio (SAR). Water samples used for informal irrigation contained significant microbial loads: total coliform ranged from 25×10² to 1209×10² cfu/100ml and E. coli from 2×10² to 651×10² cfu/100ml, with a mean total coliform level (517.917×10² cfu/100ml) far exceeding the recommended maximum guideline values of 5,000 and 1,000 cfu/100ml for irrigation water. CPI values ranged from 0.16 to 0.43 (average 0.27), indicating moderate pollution; about 42% of samples were classified as sodic waters, and SAR values of 3.42 to 24.75 meant nearly all samples exceeded the threshold (SAR > 4) associated with reduced water infiltration and soil permeability problems. The water is described as under persistent pollution pressure from expanding human activity, posing high risks to the health of the environment, farmers, traders, and consumers.

Agustina Cavalanti · El Barrio Pueyrredón · Argentina

An article reporting that urban gardeners in the Autonomous City of Buenos Aires warn a newly passed urban agriculture law 'conceals the possibility of using public land for private profit.' It states the bill was passed by the ruling majority without room for debate, and criticizes Article 8, which lets any natural or legal person, public or private, apply for permits to develop gardens. A citizen group, 'El Reciclador,' had proposed an alternative emphasizing state or nonprofit management and an educational focus, which was not adopted. Gardeners in the Villa Pueyrredón neighborhood distributed 200 seedlings in protest.

Anna Margenat, Víctor Matamoros, Sergi Dı́ez, Núria Cañameras, Jordi Comas, Josep M. Bayona · Environment International · Spain (Barcelona)

A study assessed 16 trace elements and 33 organic microcontaminants in lettuce, tomato, cauliflower, and broad beans from peri-urban farms near Barcelona, Spain, and a rural site. Concentrations ranged from non-detectable to 17.4 mg/kg for trace elements and non-detectable to 256 μg/kg for organic microcontaminants, with tomatoes showing the highest levels. Risk assessment indicated a low human health risk from consuming these vegetables in the peri-urban area, comparable to the rural site.

Celina Gómez, Christopher J. Currey, Ryan W. Dickson, Hye‐Ji Kim, Ricardo Hernández, Nadia Sabeh, Rosa E. Raudales, Robin G. Brumfield, Angela Shaw, Adam K. Wilke, Roberto G. López, Stephanie E. Burnett · HortScience · Global

This review discusses the application of controlled environment agriculture (CEA) techniques to urban agriculture (UA), driven by increased market demand for local produce. While CEA offers opportunities for year-round production and resource-use efficiency, significant challenges remain due to the high costs of production in urban settings. The review emphasizes that for urban growers to benefit, studies evaluating CEA for commercial food production must consider economic viability.

Mysha Clarke, Melissa Davidson, Monika Egerer, Elsa C. Anderson, Nakisha Fouch · People Place and Policy Online · United States

This paper argues that community gardens should be a prioritized element of green infrastructure to improve cities' adaptation to climate change. Community gardens can reduce urban heat islands, provide ecosystem services, and increase stormwater retention. However, a qualitative analysis of 18 policy documents for Baltimore, Chicago, and New York City, U.S.A., found that green infrastructure for climate change adaptation prioritizes rain gardens, bioswales, and green roofs, but seldom acknowledges the role of community gardens.

Barbara Maćkiewicz, Raúl Puente Asuero, Antonio Garrido Almonacid · Quaestiones Geographicae · Spain

This study investigated how urban allotment gardens in Baeza, Andalusia, Spain, affect the city’s sustainable development. The research showed that allotment gardens in Baeza endorsed all three pillars of sustainable city development: ecological, economic, and social. However, it was found that developing broader community relations on the city scale, reviving the declining local grocery market, and disseminating environmental initiatives that allotment gardens could promote and facilitate were missing.

Pernille Malberg Dyg, Søren Christensen, Corissa Jade Peterson · Health Promotion International · Global

A thematic review of 51 articles published between 1980 and 2017 examined the effects of community gardens on wellbeing among vulnerable populations. Findings suggested positive impacts on physical health and individual/social wellbeing, but food security enhancements were inconsistent. Two articles raised potential food safety concerns in urban community gardens, recommending attention to minimizing these risks.

Jha Ritesh Kumar, Bhattarai Natasha, KC Suraj, Shrestha Arjun Kumar, Kadariya Manahar · Malaysian Journal of Sustainable Agricultural · Nepal

This research inspected existing practices and obstacles in rooftop farming in Nagdhungha and Birauta, Nepal. Two practitioners were interviewed and 60 non-practitioners were surveyed. Results show that rooftop farming can benefit the environment by reducing atmospheric carbon and assist urban areas by reducing stormwater management costs, with a high willingness to practice rooftop farming among urban dwellers.

Michael Carolan · Journal of the American Planning Association · United States

This 2019 study, based on 82 interviews in Denver, New York, and San Francisco, investigated how traditional and digital urban agriculture converge and diverge regarding land use and gentrification. It found that both digital and traditional urban farming systems are linked to gentrification and inequitable land use patterns. Digital urban farming systems also operate in a regulatory gray area, with their "digital" aspects used to gain more zoning permission than traditional urban agriculture.

Alessio Russo, Giuseppe T. Cirella · Humanities and Social Sciences Communications · Global

This comment examines "edible urbanism 5.0," noting that urban and peri-urban agriculture can have negative effects on city ecosystems, which urbanists and planners have largely overlooked. It highlights the need for a concept that considers trade-offs between ecosystem services and disservices, especially given current unsustainable industrial intensive farming. Edible urbanism aims to integrate food security, resilience, and social inclusion through edible green infrastructure and modern food production.

Martin Stuchtey, Tilmann Vahle · OpenEdition (OpenEdition) · Global

This paper discusses different types of urban agriculture (UA) to assess its potential for future food production. Conventional open-air farming is found to be rarely commercially viable for meaningful food production, though it offers community, educational, psychological, and environmental benefits. High-yielding Controlled Environment Farming (CEF), while potentially contributing substantially to food output, is highly capital and knowledge-intensive and likely to develop at city fringes due to economic considerations.

Annisa Nur Ichniarsyah, Heny Agustin, Maulidian Maulidian · Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal · Indonesia (Bekasi)

The Asofa Foundation conducted hydroponic training for the community in Bekasi, Indonesia, covering seeding, transplanting, and mixing hydroponic fertilizers. Participants learned to cultivate plants using hydroponics, but seedlings died after transplanting due to poor local water conditions. The study suggests further training in fruit hydroponics or other cultivation methods suitable for the environmental conditions.

· Journal of Animal and Plant Sciences (J Anim Plant Sci ) ISSN 2071 – 7024 · Africa

A study in Port-Bouët, Abidjan, examined market gardeners' phytosanitary practices and pesticide residue incidence on lettuce. It found that 39.6% of pesticides used were not recommended for market gardening, 86.84% of gardeners did not protect themselves during application, and 80.26% did not observe pre-harvest intervals. Consequently, 93.33% of lettuce samples did not comply with Codex Alimentarius and EU standards due to high pesticide residue contamination.

Leelanayagi Ramalingam, Juwaidah Sharifuddin, Zainal Abidin Mohamed, Fazlin Ali · International Social Science Journal · Malaysia (Klang Valley)

This study analyzed data from 375 volunteers in Community-based Urban Agriculture Programmes in Klang Valley, Malaysia, to determine the relationship between motivation and satisfaction. It found that volunteer satisfaction was primarily influenced by external factors like campaigns, support groups, extension departments, community, and government policy, followed by love of farming, social referents, and values. The program faces problems in attracting and retaining enough volunteers, indicating a governance challenge for sustainability.

Sarah E. Cramer, Anna Ball · Journal of Agricultural Education · United States

This qualitative case study in the United States examined a school garden program transitioning from non-profit to public school district control, conceptualizing this as a shift from a non-formal to a formal education paradigm. The research explored tensions between constructivist, non-formal educational philosophies and standardized, formal education within school garden settings. The findings indicate challenges in integrating non-formal learning into formal public education structures, arguing for broader legitimation of garden-based learning in curriculum.

Christine Aubry, Nastaran Manouchehri · OpenEdition (OpenEdition) · France (Paris)

Urban and peri-urban agriculture is exposed to various forms of pollution related to cultivation methods and urban air and soil quality, with different crop types exhibiting varied reactions to pollutants. The T4P and REFUGE programs on urban farms in the Paris region, and the ADURAA and QUALISANN programs studying vegetable-growing in Antananarivo, Madagascar, aim to assess health risks and oversee practices using methodological frameworks.

Giszell Dymond Weather · Carolina Digital Repository (University of North Carolina at Chapel Hill) · United States

A 7-month study of the Angier Avenue Neighborhood Farm in East Durham, a predominantly Black area, found that Black residents rarely participate in farm activities. This research, based on participant observation, interviews, and food systems research, theorizes the relationship between urban farming and gentrification, arguing that equitable community food projects must incorporate local Black residents' cultures and histories to be sustainable.

오익근, 서정아, 장승옥 · 한국지역개발학회지 · South Korea

A focus group interview with young urban farmers in Daegu, South Korea, explored job creation through urban farming. Participants perceived farming as physically demanding and unrewarding, despite seeing urban farming as a promising industry for job creation. They also noted a lack of national support policies and difficulties in participation. A contradiction was identified between the young farmers' desire to adopt labor-saving new technologies and the goal of creating jobs through traditional farming.

Cosmos C. Alamanjo, Abimbola O. Adepoju, H. Martin, R.N. Baines · Zenodo (CERN European Organization for Nuclear Research) · Nigeria (Jos)

This mixed-methods study investigated farmers' perceptions, willingness, and capacity to use household sewage sludge as organic resources for peri-urban agriculture around Jos, Nigeria. Farmers were found to use a complex mix of fertilizers and were keen to utilize household sewage sludge for soil fertility, though constrained by accessibility. A critical finding was that household sewage sludge observed in the field is heterogeneous due to its proximity to urban refuse disposal, raising concerns for possible cross-contamination of pollutants and indicating a lack of extension guidance.

Arantza Elena Sanchez Gutierrez · · Mexico

In Querétaro Municipality, Mexico, a strategy was designed and implemented to increase and incentivize the use of urban agriculture. Previous strategies implemented in Mexico had resulted in low participation and abandonment of practice due due to low interest from inhabitants and a lack of will to follow through on plans. This qualitative research analyzed the causes of these failures using User-Centered Design tools and Design Thinking. Findings showed that a "strategy of appropriation," emphasizing a sense of belonging, well-being, and commitment, resulted in an increase in this variable, which influences the abandonment of agricultural practices.

Anna Paltseva, Zhongqi Cheng · RUDN Journal of Agronomy and Animal Industries · United States (New York City)

Elevated trace metal concentrations, particularly lead (Pb), are prevalent in New York City urban soils. This study analyzed the spatial distribution of lead in NYC gardens and assessed pollution levels and ecological risks. Findings indicated that lead posed moderate to significantly high ecological risk, and the majority of NYC garden soils were characterized as polluted.

Simon Tresch, David Frey, Renée‐Claire Le Bayon, Paul Mäder, Bernhard Stehle, Andreas Fließbach, Marco Moretti · Scientific Reports · Switzerland (Zurich)

A study in 85 urban gardens across Zurich, Switzerland, investigated the impact of gardening on five soil functions and the relationship between plant (600 spp.) and soil fauna (18 earthworm spp., 39 springtail spp.). High plant diversity positively affected soil fauna and multifunctionality, but intense garden management decreased plant diversity. This indicates a trade-off where intensive gardening, while potentially beneficial for some aspects, can negatively impact overall plant diversity.

Maurice Dasylva, Ngor Ndour, Bienvenu Sambou, Sara Danielle Dieng · European Scientific Journal ESJ · Senegal (Ziguinchor)

In Ziguinchor, Senegal, the peri-urban rice farming system contributes to food security but is ignored by decision-makers and suffers from urbanization and physicochemical changes in rice field soils. An agronomic diagnosis, based on 180 yield squares (1/4m side) installed in 4 peri-urban valleys, showed average yields of 4.79 ± 0.35 t.ha-1. However, urbanization, silting, acidification, and progressive salinization of soils are the main limiting factors for this production system.