Research & reports

J. O. Oladeji · Journal of Agriculture Forestry and the Social Sciences · Nigeria

A survey in three urban local government areas of Ibadan, Nigeria, used questionnaires and descriptive/inferential statistics to assess urban farmers' perceived health and environmental problems. Most respondents were middle-aged (mean 35 years, 27.9% of the sample), married (69.2%), and formally educated (87.9%), with trading as the main occupation (47.5%) and crop production the most-practiced activity (38%). The most commonly perceived health problems were malaria, headache, and body pain, while unpleasant odor, air pollution from bush burning, and improper waste disposal were the most perceived environmental problems; chi-square tests found marital status (x²=9.53, P=0.05) and education (x²=18.45, P=0.05) significantly related to perceived health problems, and marital status (x²=23.84), education (x²=30.60), and primary occupation (x²=10.73, all P=0.05) significantly related to perceived environmental problems.

Chandra Sen · Journal of Interdisciplinary Economics · India

This study estimated the impact of air pollution on crop yields in peri-urban areas of Varanasi, India. Phytotoxic gases are known to cause major yield reductions in important crops in developing countries, and in this study all major crops grown in peri-urban Varanasi — paddy, pigeon pea, maize, wheat, and potato — showed yield reductions attributable to air pollution. Air pollution was found to reduce both the yield and the nutritional quality of the produce, and the study calls for similar validation studies in other cities and for efforts to reduce air pollution in the city to improve crop yield and quality.

Sibel Mansuroğlu, Ali Sabancı · Journal of Food Agriculture & Environment · Turkey

In primary schools of the Konyaalti district, Antalya, Turkey, the study examined the physical school-garden landscape against landscape-architecture principles and educational outcomes, assessing existing conditions, planning and design problems, the qualitative state of outdoor space, and principals' awareness of using well-designed gardens to enhance educational opportunity. School gardens showed problems of poor or insufficient planning and design, inadequate land allocation, and unqualified management regarding gardens' educational importance, and an extremely high student-to-teacher ratio left teachers without the time or energy for personal garden projects, though the researchers saw potential for principals, teachers and parents to build ties with civic and public organizations.

Larsen K., Gilliland J. · Health & Place 15(4):1158-1162 · Canada

Evaluates a farmers' market established in a London, Ontario food desert, analyzing its effect on the price and availability of fresh, healthy food and its potential to improve local food access.

· Water, Air, & Soil Pollution · Global

Irrigates potted lettuce, carrots and peppers with untreated and treated (settling plus slow sand filtration) household greywater over eight weeks and tests edible portions for faecal indicator organisms.

Somerset S., Markwell K. · Public Health Nutrition · Australia (Queensland)

A 12-month intervention trial introduced a food garden at a state primary school (grades 4-7) in a low socio-economic area, evaluating changes in children's ability to identify vegetables and fruit and their attitudes toward them, against a historical control.

· Leisure Studies · Port Melbourne, Australia

Ten members of a community garden in Port Melbourne, Australia were interviewed with semi-structured questions exploring their perceptions of the health and wellbeing benefits of participation.

Cezary Kabała, T. Chodak, L. Szerszeń, Anna Karczewska, Katarzyna Szopka, Urszula Fratczak · Fresenius environmental bulletin · Poland (Wroclaw)

An analysis of 180 allotment garden soils in Wroclaw, Poland, found that concentrations of Cu, Pb, and Zn (12.5-659 mg Pb kg-1, 38.1-2103 mg Zn kg-1, 12.9-595 mg Cu kg-1) were influenced by industrial pollution sources, organic matter, pH, and macronutrients. Soils in gardens on former housing or industrial areas had significantly higher metal concentrations. Up to 35% of soils in the city zone were excessively contaminated, making them unsuitable for vegetable and fruit production and requiring reclamation.

M.R. Gorham, Tina M. Waliczek, Amy Snelgrove, Jayne M. Zajicek · HortTechnology · United States (Houston)

A pilot study in Houston, Texas, investigated the impact of 11 established community gardens on property crime numbers using 2005 crime data. Statistical comparisons between community garden areas and randomly selected city areas showed no statistically significant differences in the mean number of crime occurrences. The presence of a community garden was not found to be a predictor of a lower crime rate for a neighborhood.

Amy Cutter‐Mackenzie · ePublications@SCU (Southern Cross University) · Australia

An Australian environmental education non-profit implemented the "Multicultural Schools Gardens" program in disadvantaged schools, using food gardening to teach culture, English as a Second Language, and environment. A combined methods research approach, including student self-research, interviews, and observations, was used to assess learning experiences. At one culturally diverse school with many migrant and refugee families, the program fostered a strong sense of belonging among students and provided opportunities for English language learning and environmental connection.

Alexandra Evans, Liqa Raschid-Sally, Olufunke Cofie · · Global

This chapter presents three case studies in which multi-stakeholder processes were used to improve wastewater management for urban agriculture. Although differences were observed, there were several cross-cutting lessons. A critical factor is the starting point, including an agreed definition of the problem to be addressed, negotiated goals, and a management structure acceptable to all stakeholders. When multi-stakeholder processes are externally initiated, it is essential that project priorities are commensurate with local priorities.

Wendy Heiger‐Bernays, Alexa Fraser, Vaughn R. Burns, Kerry Diskin, David Pierotti, K Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · PubMed · United States

A study characterized urban community garden soils contaminated by timbers, specifically finding elevated levels of polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) treated lumber. Researchers determined the extent of contamination, designed a remediation plan, and assessed the safety of adding city compost as a soil amendment in Boston community gardens. Recommendations for healthful gardening practices were also provided.

W. Van Averbeke · Water SA · South Africa (Pretoria)

This study in five informal settlements of Atteridgeville, Pretoria, South Africa, used a pilot study, household survey, and multiple case studies to assess urban farming's contribution to food security and household income. While over half of households participated in urban farming, its contribution to total household income and food security was generally modest. Main constraints included lack of space and limited access to irrigation water.

Pay Drechsel, Liqa Raschid-Sally, Robert Clement Abaidoo · · Ghana (Accra)

Urbanization in West Africa has led to most domestic wastewater contaminating surface water sources. In Accra, Ghana, vegetables on urban markets are highly contaminated, with about 200,000 urban dwellers consuming street food containing raw vegetables from these sources daily. This research explores on-farm risk mitigation options, finding potential to significantly reduce helminth egg counts and bacterial contamination through improved washing practices.

Vicente Araguas · Revista de libros · New Zealand

This kaupapa Māori research explored the motivations and role of Māori community gardens (māra) in health promotion in Aotearoa New Zealand, interviewing seven māra initiative leaders. Findings indicate māra development is driven by a desire to empower Māori collectives and reconnect them with ancestral lands. Māra foster community development, intergenerational connection, and the practice of Māori language and cultural heritage, contributing to social cohesion and collective efficacy.

Éric Duchemin, Fabien Wegmuller, Anne-Marie Legault · Field Actions Science Reports · Canada (Montreal)

This article discusses urban agriculture (UA) initiatives undertaken in Montreal, Canada, for over 30 years, specifically the City-managed Community Gardening Program and six collective gardens managed by community organizations. These UA initiatives have fostered vegetable production and a socialization and education environment, contributing to individual and collective social development in economically disadvantaged districts. The various approaches achieve their established objectives and serve as multi-dimensional tools for the social development of disadvantaged populations.

Rodrigue V.C. Diogo, Andreas Buerkert, Eva Schlecht · Nutrient Cycling in Agroecosystems · Niger (Niamey)

This 24-month study investigated nutrient efficiency and food safety in urban and peri-urban agriculture in Niamey, Niger. Nutrient inputs and offtakes were quantified for 10 vegetable gardens and 9 millet fields, and contamination of irrigation water and selected vegetables with fecal pathogens and heavy metals was determined. Above-threshold levels of Salmonella spp. and Escherichia coli were detected in lettuce irrigated with river water and fertilized with animal manure, and in lettuce irrigated with wastewater, indicating food safety concerns.

Erica Rose Menkel Mintzer · · United States

This study evaluated a garden-based curriculum and school lunch program at Common Ground High School in the United States using mixed quantitative and qualitative methods. It found that Common Ground students had more food system knowledge but not more basic nutrition knowledge than comparison schools. While Common Ground students increased fruit and vegetable intake at school over the year, comparison school students ate more familiar vegetables, and Common Ground students ate more unfamiliar vegetables. BMI data showed varied averages between schools and grades, with no statistically significant difference (p = 0.0622).

Anges Yadouléton, Alex Asidi, Rousseau F Djouaka, B. James, Christian Agossou, Martin Akogbéto · Malaria Journal · Benin

A study in urban areas of Benin investigated the impact of rapid vegetable farming development on the emergence of insecticide resistance in Anopheles gambiae populations, using sociological data, bioassay tests, and biochemical analysis. The expansion of urban agriculture led to improper insecticide use for vegetable pests, exerting strong selection pressure on mosquito larval populations. This resulted in the emergence of insecticide resistance in malaria vectors, with permethrin mortality rates of 76% in Parakou, 23.5% in Porto-Novo, and 17% in Cotonou.

Colleen O’Holleran · School for International Training Digital Collections (School for International Training) · United States (Boulder, Colorado)

A study in Boulder, Colorado, interviewed thirteen community gardeners to understand their motivations for participation. Gardeners were found to come from diverse backgrounds and participate for various reasons, including the desire to be outdoors, curiosity, resource sharing, a closer connection with food, self-reliance, health commitment, and pride. Despite challenges, gardeners overcome them due to their commitment to cultivating their plots.

Daniela Plachá, Helena Raclavská, Dalibor Matýsek, Mark H Rümmeli · Geochemical Transactions · Czech Republic

Polycyclic aromatic hydrocarbon (PAH) contamination was investigated in urban, agricultural, and forest soil samples from the surroundings of Valasske Mezirici, Czech Republic. While PAH levels in urban/agricultural soils were within the typical range for industrialized areas, forest soils showed elevated PAH concentrations compared to other forest soils in Western and Northern Europe. PAH concentrations were highest in localities at higher altitudes and decreased with increasing distance from the town.

Allyson Holbrook · Figshare · Global

"The Green We Need" project, commissioned by Nursery and Garden Industry Australia (NGIA), identified 171 articles published since 2000 across 75 academic journals. These articles presented new data on the health, quality of life, and social impacts of urban dwellers' access to green space. The research strongly supported a growing body of international studies since 2000 indicating the human need for nearby green spaces for healthy living, physical and social activity, and a direct relationship between proximity to green space and its use for recreation and daily activities.

Abdullah Al-Shahin · Zenodo (CERN European Organization for Nuclear Research) · Libya

A cross-sectional survey using structured questionnaires was conducted in four Libyan coastal cities to assess the impact of urban community gardens on food security. Participants reported significant increases in fresh produce consumption, with 72% of those living within five kilometers of their gardens showing increased fruit and vegetable intake. The study suggests urban community gardens positively impact food security by improving access to fruits and vegetables for residents.

Louise Joly · Primary Health Care · United States

This research focus describes three studies exploring the health benefits of gardening as a social activity. The studies investigate how community gardens in Denver, Colorado, contribute to strengthening neighborhoods and health.

Bruce Frayne, Jane Battersby, Robert Fincham, Gareth Haysom · · South Africa

This study examines urban food security in South Africa, focusing on Cape Town, Msunduzi, and Johannesburg, and includes a critique of the City of Cape Town's urban agriculture policy. The abstract indicates that the policy was found to have significant shortcomings, particularly concerning local production and access to food. The research highlights various policy issues related to food access, dietary diversity, local production, and local markets within these urban contexts.