Research & reports

Kevin C. Matteson, Gail Langellotto · Insect Conservation and Diversity · United States (New York City)

The ability of adding 70 plants of seven native wildflower species over two years to augment beneficial insect richness, including bees, butterflies, and predatory wasps, was assessed in New York City community gardens. Bayesian analyses failed to find a strong influence of the native plant additions on beneficial insect richness, even after correcting for prior floral abundance. Butterflies and megachilid bees were found to heavily utilize introduced ornamental and crop flowers in these gardens, even when native flowers were present.

Mamadou Ndiaye, H.‐R. Pfeifer, S. Niang, Y Dieng, Mauro Tonolla, Raffaele Peduzzi · VertigO · Senegal (Dakar)

In Dakar's urban agriculture, untreated wastewater is used for irrigation due to shallow groundwater salinization. A study conducted at Pikine and Patte d'Oie sites evaluated the chemical and microbiological quality of irrigation water. Findings showed that total nitrogen in irrigation water exceeded WHO guideline values, Salmonella spp. was isolated from 35% of irrigation water, and a wastewater sample tested positive for Vibrio cholerae. This research indicates that irrigation with polluted water and the use of organic fertilizers can degrade groundwater quality and pose health risks.

M. Tshitangoni, A. Okorie, Joseph Francis · Scientific Research and Essays · South Africa (Limpopo Province)

A study conducted in Vhembe District, Limpopo Province, South Africa, assessed challenges faced by 30 poverty alleviation projects (community gardens, poultry, etc.). A survey of 108 beneficiaries identified numerous inception-based challenges, such as lack of training (90%), lack of funds (80%), and fraudulent use of funds (33%), as well as operation-based challenges like poor record keeping (70%) and unavailability of markets (60%). These challenges were found to significantly limit the performance of the poverty alleviation projects.

Zhou Pei · · China (Shanghai)

A study from July to September 2009 in an orchard village, Nanhui District, Shanghai, investigated the characteristics of non-point source nitrogen pollution in groundwater. Total nitrogen and its three forms (NO3-N, NH4-N, NO2-N) were monitored, revealing NO3-N as the main form (average 1.43-13.71 mg/L). Nitrogen pollution in groundwater depended on land use, with NH4-N pollution most serious under residential areas (average 0.074-0.457 mg/L). Total nitrogen pollution near the river and orchard (average 33.67-62.57 mg/L and 33.05-65.04 mg/L) was more severe than under residential areas.

沈建华, 储健 · 江苏农村经济 · China (Nanjing)

In recent years, Nanjing, China, has promoted the development of urban agriculture amidst rapid urbanization, contributing to increased farmer income and enriched urban life. However, the urban-rural divide remains relatively obvious. A key challenge is how to narrow this urban-rural gap and accelerate integrated development during the "12th Five-Year Plan" period.

Dick Foeken, Samuel Owuor, Alice Mwangi · Children Youth and Environments · Kenya

A survey was conducted in almost all primary and secondary schools in Nakuru Town, Kenya, to examine the extent to which school farming contributes to school feeding programs. The survey found that while school farming and feeding programs are common practice, school farming substantially contributes to school feeding programs in relatively few cases.

Kohei Makita, Eric M. Fèvre, Charles Waiswa, Mark Bronsvoort, Mark C. Eisler, Susan C. Welburn · Land Use Policy · Uganda

This paper describes a spatial representation of the peri-urban interface (PUI) of Kampala, Uganda, and identifies socio-economic factors related to peri-urbanicity using rapid rural mapping. It notes that urban and peri-urban agriculture (UPA) in rapidly expanding cities carries public health risks, such as zoonotic disease transmission. The study provides a methodology for describing the PUI in developing countries.

김태곤, 박문호, 허주녕 · 한국농촌경제연구원 기본연구보고서 · South Korea

This study aims to identify the current status and challenges of urban agriculture and propose solutions. Urban agriculture faces chronic problems including securing farming land due to rising land prices, management insecurity resulting from farmland diversion or lease, and increased production costs due to environmental regulations. These issues restrict the range of agricultural management.

É. Thys, André Mfoukou-Ntsakala, G. Nkouika-Dinghani-Nkita, Guido Van Huylenbroeck, Niko Speybroeck · Outlook on Agriculture · Republic of Congo (Brazzaville)

This paper analyzed the impact of armed conflicts on urban livestock keeping, particularly small ruminant keeping, in Brazzaville, Republic of Congo. Two surveys, one before 1993 and one after 2002, indicated that the 1997 conflict had a negative impact on livestock keeping, as most livestock keepers lost their animals. Financial resources were an important factor in rebuilding the flock after 1997.

Alec Thornton, Etienne Nel, Godfrey Hampwaye · Development Southern Africa · Zambia

A review of urban agriculture in Zambia's four largest cities revealed that despite attempts by the Kaunda government in the 1960s–1970s to create supportive policies, there is currently a near absence of institutional support, constraining farmers' activities. A survey of 400 farmers confirmed the value of urban agriculture as a survival strategy but also highlighted the lack of necessary support measures.

Andrew Flachs · Electronic Green Journal · United States

This paper explores the social and cultural effects of urban gardening in the greater Cleveland area, noting that the social impact of community gardens is less studied than other benefits. The author's fieldwork found that many gardeners combine utilitarian functions with environmentalist ideology, contrary to some authors who claim that gardeners are preoccupied with economic impact, leading to a biased conclusion about motivations. The paper aims to convey the complexity of use, function, and intent in these communal spaces.

Eric L. Hazzard, Elizabeth Moreno, Deborah Lane Beall, Sheri Zidenberg‐Cherr · The FASEB Journal · United States (California)

This study evaluated the effectiveness of the California Instructional School Garden Program (CISGP) grants by surveying 749 grantee schools. It found that the development, sustained use, or expansion of gardens was less than expected (p=.01), and fewer schools than expected reported using gardens for instruction (p<.001) or to teach academic subjects (p<.003). Less than 40% of schools reported accomplishing all their garden goals with the funds.

杨卫丽, 李同昇, 陈波 · 经济导刊 · China (Xi'an)

The promotion of integration in China's Xi'an-Xianyang metropolitan area, while bringing urban economic prosperity, has also created unprecedented pressure on the ecological environment and social problems. Specifically, the "urban-rural dual structure" and "three rural issues" are the biggest bottlenecks encountered during the urbanization process.

A. C. Egun · Journal of Agricultural Sciences · Global

This paper examined the competencies needed by Agricultural Science teachers in urban areas for effective institutional preparation. Teachers identified 24 competencies for urban agriculture teaching but expressed deficiency in 19 competencies (79.17%). The curricular implication is to include basic Humanities subjects like Geography, Economics, and Commerce in Agricultural Science teacher programs and to effectively implement field trips to strengthen the relationship between theory and practice.

Megan Sheridan · University of Minnesota Digital Conservancy (University of Minnesota) · United States (Minneapolis)

This project aimed to facilitate the creation of a commercial urban farm in the Seward neighborhood of Minneapolis. Goals included developing a business plan for an economically viable urban farm. The project found that economic viability without foundation grants is challenging, and site control is key.

Lisen Hendeberg · · Sweden

This study compared Ebenezer Howard's garden city ideals with contemporary urban farming movements in Sweden through a literature review and analysis of three active movements. It found that when garden city ideas were implemented in Sweden between 1905 and 1930, much of the original ideological basis for self-sufficient small towns and collectively owned land was lost. While similarities exist in ideological starting points, their approaches to change differ.

Eva Collins, Kate Kearins · Academy of Management Learning and Education · New Zealand (Auckland)

A sustainability instructor took a graduate class to an eco-village near Auckland, New Zealand, where students observed off-grid homes and community gardens. While New Zealand students were inspired by the alternative lifestyle, two international students from China and Tajikistan expressed that this lifestyle was how they lived at home and they did not wish to live that way, preferring the New Zealand lifestyle. This indicates a limited appeal of the eco-village model to some international students.

Emma Schroeder, Krishna Ramanujan · · United States

In his 2010 interview with Emma Schroeder, Krishna Ramanujan shared his memories of the Eagle Heights Community Garden. Mr. Ramanujan discussed the ethnic diversity of the gardeners, the tensions between the Gardens and the University, and balancing graduate school while raising a young family in the Eagle Heights community. This interview was conducted for inclusion in a Master's thesis on the Eagle Heights Community Gardens.

Hygin Faust Kakai, Alban Gilles Kakai, Armelle Grey Tohouegnon · VertigO · Benin (Cotonou)

This study in Benin examined urban agriculture and waste valorization in Cotonou, Abomey, and Abomey-Calavi. In Cotonou, overexploitation of sandy, organic-poor soil in market gardening led to soil impoverishment, forcing gardeners to use chemical fertilizers with negative environmental impacts. However, some market gardeners adopted compost use, transitioning to organized organic urban agriculture after a waste management project supported waste valorization. This dynamic was not observed in Abomey, where urban agriculture is practiced in family spaces and public areas, unlike Cotonou's developed sites. Abomey-Calavi, despite rapid demographic growth, was almost devoid of urban agriculture practices.

Diana Lee-Smith, L. J. A. Mougeot, Michael Levenston, Peter Mann, Katherine Brown, Jerry Kaufman · Journal of Agriculture Food Systems and Community Development · Global

This reflection on the urban agriculture movement notes that 19th and early 20th-century urban reforms, including urban gardens, aimed to improve living conditions in industrial cities. However, these initiatives also shifted the burden of sustenance from industrialists and fair-wage policies onto urbanizing families, particularly women. Despite this, garden spaces provided nourishment and retreats in densely populated areas.

Kwasi Appeaning Addo · Remote Sensing · Ghana (Accra)

This paper discusses the need for sustainable management of urban and peri-urban agriculture in Accra, Ghana. A lack of reliable data on the extent of urban/peri-urban areas used for farming has hindered the development of sustainable policies to manage urban farming in Accra. Ground-based survey methods are problematic and prohibitively expensive, making accurate assessment of urban farming's future role difficult.

C.J.M. van der Lans · Socio-Environmental Systems Modeling · Global

This study analyzes the sustainability of international horticulture initiatives, including those by Dutch businesses and Wageningen UR, particularly questioning their continuity if foreign support withdraws and their viability given limited foreign currency in developing countries. Using the Multi-Level Perspective framework, two cases were examined: an Integrated Pest Management project in Ethiopia's floriculture sector and the transition to large-scale urban agriculture in Detroit, USA. The report raises concerns about the long-term economic viability and self-sufficiency of these initiatives.

Felipe de Jesús Cruz Celis, Héctor Montiel Campos · · Global

This study aimed to propose sustainability in urban agriculture through the use of hydroponic technology for agricultural production. Through documentary research and expert interviews, diagnostic criteria and sustainability indicators were determined, making hydroponics an option for producing food in reduced spaces. The results indicate that urban agriculture, due to its spatial scope, has limited possibilities for scaling up to the formal market, but can respond to family self-consumption needs and improve nutritional and higher quality foods.

Laura Whitzling, Michelle M. Wander, Ellen Phillips · Journal of Agriculture Food Systems and Community Development · United States (Chicago)

This study profiled soil quality, including lead levels, in 10 Chicago community gardens, comparing raised beds to non-raised beds and adjacent bare soil. The overall mean soil lead level was 135 ppm (n=86) by EPA method, with a range of 10-889 ppm. While most gardens' lead levels were not a concern, higher lead in adjacent bare soil suggested contamination risk. Use of raised beds reduced lead levels, but further study is needed.

FU Li-hua · 自然资源学报 · China (Shanghai)

A study of Shanghai, China, building an evaluation index system reflecting the characteristics of sustainable urban agricultural development, using a combination of the analytic hierarchy process (AHP) and the information entropy method to determine index weights, and applying it to time-series data from 1993 onward to produce a quantitative, comprehensive appraisal. The results comprise three findings. First, the population subsystem progressively became a main obstructive factor for sustainable urban agricultural development, the economic subsystem gradually became a main contributing factor, and the social subsystem grew more important in raising development capability, while cultivated land resources became increasingly scarce and continued to decrease, constraining improvement, and the heavy burden of agricultural production's self-pollution had a negative effect on the overall upgrade of development capability. Second, the resource (R-D) composite index was not high and declined significantly, averaging 1.9090 over 1993-2006 and falling 6.00% per year from 2.5336 in 1993 to 0.5541 in 2006, indicating growing resource pressure; the environmental (E-D) composite index was smaller and changed little, remaining around 1.0000 in most years, with environmental pressure staying high but stable. Third, after earlier wave-like fluctuations, the overall composite evaluation index entered a sustained, steady climb, with a significant increasing trend in development capability.