Research & reports

Keiichi Moritsuka, Yoshiyuki Tokunaga, Hiraku Hoshi, Hiroshi Suda · INFRASTRUCTURE PLANNING REVIEW · Global

This paper proposes policies for allotment garden facilities and management, based on a survey of users' consciousness. The survey found that some users rent gardens that do not satisfy their purpose due to a lack of publicly available information about allotment gardens. The paper concludes that garden managers must publicize the purpose of establishing gardens and show eagerness, while users should communicate with managers, guides, and other users.

Godfrey D. Mudimu, Shepherd Siziba, Benjamin Hanyani‐Mlambo · OpenDocs (Institute of Development Studies) · Zimbabwe (Harare)

This study in Harare, Zimbabwe, examined the socio-economics of urban crop production on municipal lands, cultivators' views, and land use conflicts. Urban agriculture, a widespread practice for subsistence maize and food security, is not supported by planners and conflicts with urban land use provisions. Findings revealed a serious lack of environmental concern among cultivators, with most ignoring stream bank regulations and lacking knowledge of environmental effects.

M.J. Zwankhuizen, Francine Govers, J.C. Zadoks · Phytopathology · Netherlands

A study in Southern Flevoland, Netherlands, from 1994 to 1996, assessed inoculum sources of potato late blight. It found that 74% of early disease foci in commercial potato fields were linked to nearby infested refuse piles. Infected seed tubers, volunteer plants, and infested allotment gardens appeared to be of minor importance for late blight development in potato fields. However, in August 1994, infested organic potato fields became major mid-season infection sources, spreading the disease to adjacent conventional fields.

Dick Foeken, A. Mboganie-Mwangi · Leiden Repository (Leiden University) · Africa

Using survey data collected in 1994 in Korogocho, one of Nairobi's slum areas in Kenya, this study examined whether access to farmland influences a household's food situation. Access to land had a positive impact on urban households' overall welfare, but not necessarily on their food situation. Households with access to a rural plot appeared better off in terms of self-reported food situation than households without any land access, and access to rural land appeared more favorable for food situation than access to urban land alone. Among the very poor households in Korogocho who claimed access to rural land, half did not actually use that land themselves.

Yasunari Miyake, Yasuo Matsumoto · JOURNAL OF RURAL PLANNING ASSOCIATION · Japan (Ichinomiya City)

This study examined the future of allotment gardens in Ichinomiya City, Aichi Prefecture, by interviewing 20 landowners regarding land ownership and land use. Allotment distribution expanded into marginal urban regions, with new allotments concentrating in frontier areas. While most landowners were satisfied and intended to maintain allotments, those in urbanization promotion areas faced financial difficulties due to high taxes and motivation for land use conversion, indicating that allotment management will fail in these areas.

Nicholas P. Dunning, Timothy Beach, David J. Rue · Ancient Mesoamerica · Guatemala

This study of the Petexbatun region, Guatemala, found that ancient Maya peoples in Preclassic times cleared large areas of upland tropical forest for agriculture, leading to significant soil erosion. During the Late Classic period, population expanded, forest clearance resumed, and upland agriculture, including terracing, was practiced, which significantly checked soil erosion. The study suggests considerable variation in urban agriculture among the region's major centers.

Guéladio Cissé · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · Burkina Faso (Ouagadougou)

This thesis investigates the sanitary risks of using polluted water for urban agriculture in Ouagadougou, Burkina Faso, where vegetables, including those eaten uncooked, are irrigated with such water. The study aims to assess diarrhoea incidence, parasitic infection prevalence, microbiological pollution levels in water, soil, and vegetables, and sociocultural factors. Initial findings indicate that peripheral sectors are more polluted than central ones, and exploited surfaces vary significantly by season. The abstract highlights potential sanitary risks due to pathogenic germs surviving in water, soil, and plants.

Richard L. Farnsworth, Saråhelen Thompson, Kathleen A. Drury, Richard E. Warner, Farnsworth, Richard L., Thompson, Sarahelen R., Drury, Kathleen A., Warner, Richard E. · AgEcon Search (University of Minnesota, USA) · Global

This research suggests that social objectives primarily drive CSA shareholders' decisions to join, with economic and "club-related" objectives being secondary. While the CSA movement is expected to grow, its emphasis on social objectives, inability to supply food year-round, and the development of size-neutral organic technologies will likely prevent it from becoming a major market channel in the next century.

M. R. S. Mlozi · Development Southern Africa · Tanzania (Dar es Salaam)

This article discusses urban agriculture in Dar es Salaam, Tanzania, examining its role in helping residents cope with the country's economic crisis. The study also associates urban agriculture with environmental degradation in the city. Factors encouraging urban agriculture at four levels are identified, and concerted efforts at all four levels are suggested to mitigate further environmental degradation.

Godfrey D. Mudimu · Singapore Journal of Tropical Geography · Zimbabwe (Harare)

This study examines the role of women in urban agriculture and perceptions of urban space use for agriculture in Harare, Zimbabwe. Despite its utility in meeting household food needs, urban agriculture is not planned for or supported by urban planners and managers as a legitimate urban land use. The activities of women, who are the main participants in urban agriculture, directly conflict with planning provisions for urban space. The study offers empirical insight on perceptions of space use for agriculture in an urban tropical environment, where conflicts can arise from different perceptions and alternative uses.

A. Mboganie-Mwangi, Dick Foeken · Leiden Repository (Leiden University) · Kenya (Nairobi)

A 1996 study in Nairobi, Kenya, compared the food security and nutritional status of low-income households engaged in urban agriculture with those not farming. It found that urban farmers primarily produced for home consumption and faced theft as a major problem. While the Undugu Society Urban Agriculture Project (USUAP) group showed better food situations and higher energy and protein intakes than other groups, all three groups had inadequate energy intake on average. The long-term beneficial effect of urban agriculture on nutritional status was negligible.

Karen Schmelzkopf · Geographical Review · United States (New York City)

This article examines community gardens in Loisaida, a high-crime, poverty-stricken area of Manhattan's Lower East Side in New York City. The gardens provide social and economic functions, serving as safe open spaces for socialization and sources of food. A major problem identified is the competition for these sites between gardening and housing development.

Beacon Mbiba · · Zimbabwe (Harare)

This paper addresses the implications of urban agriculture for urban management and poverty in Zimbabwe, covering various aspects such as off-plot cultivation in Harare, urban cultivation at home, urban maize markets, and institutional responses to uncontrolled urban cultivation. Evidence from Harare suggests that urban agriculture can be a counterproductive activity, highlighting challenges and conflicts in urban management.

James R. Preer, Ahmed N. Abdi, Harkewal S. Sekhon, George B. Murchison · Journal of Environmental Science and Health Part A Environmental Science and Engineering and Toxicology · Global

This study investigated cadmium (Cd) and zinc (Zn) concentrations in vegetables grown in community gardens on different urban soils. Vegetables from a low-pH urban soil without contamination history showed higher Cd and Zn levels than those from a reclaimed landfill with digested sewage sludge, and also higher than a low-metal, neutral-pH site. Liming on the low-pH site reduced Cd and Zn concentrations in beet, lettuce, radish, and Swiss chard leaves, reaching background levels after four years. The findings indicate that soil pH is more important than total soil Cd and Zn in determining vegetable metal availability.

Beacon Mbiba · Environment and Urbanization · Zimbabwe (Harare)

This review examines local government responses to uncontrolled urban cultivation in Harare, Zimbabwe, covering both the colonial period and post-independence since 1980. The study finds that local authorities struggle to manage urban agriculture effectively and sustainably. It suggests new directions for policy and research to address these difficulties.

David Drakakis‐Smith · Geografiska Annaler Series B Human Geography · Africa

This paper focused on the impact of structural adjustment programs on the urban poor in Africa, specifically examining the urban food system in Harare, Zimbabwe. In Harare, food retailing is largely structured through supermarkets, which keeps costs high for the poor. While the informal sector has expanded, it remains relatively restricted and unorganized compared to Asian cities. Consequently, urban agriculture has grown extensively in house-gardens and illegally in the urban periphery, yet there is little coordinated or positive policy response from urban authorities.

Daniel Maxwell, Samuel Zziwa · Ecology of Food and Nutrition · Uganda (Kampala)

This study examines urban agriculture in Kampala, Uganda, as an adaptive response to economic hardships. It identifies significant constraints, including institutional obstacles to accessing underutilized urban land, municipal bylaws that suppress urban agriculture, and urban officials' indifferent to hostile views. The study found that these bylaws and views are based on misleading or false generalizations about urban agriculture.

Hiroshi AIZAWA, Kensuke Inoue, Masazumi NOMA · Journal of Architecture Planning and Environmental Engineering (Transactions of AIJ) · Japan

This study explained the reasons for non-cultivation in urban agricultural promotion areas and examined future subjects for conserving normal farmland surrounded by urbanization promotion areas. The occurrence rate of wasteland and infringement on agricultural land diversion in non-cultivated land differed according to city planning regulations and cultivating forms. The reasons for non-cultivation were found to be greatly related to farmers' workers, land ownership scale, and planning law, with owners of large landholdings who had no workers due to advanced age showing little intention to maintain agricultural operations or conserve farmland.

Lee M · PubMed · Ethiopia

In Ethiopia, urban agriculture faces significant challenges due to government disapproval of public land use for farming and difficulty in obtaining credit. A 1983 survey in Addis Ababa found that 17% of 1352 households produced their own food on less than 25 sq. meters, with 90% of non-farmers citing lack of land. Despite urban agricultural cooperatives demonstrating 70% higher member income, their lack of government legalization prevents access to loans for productivity improvement.

Johan Pottier · Africa · Rwanda

This article explores the themes of knowledge, ignorance, and power in the context of a Rwandan development project, demonstrating how ignorance is generated through agricultural extension. It argues that agronomic services rely on power structures reminiscent of social inequality, and assesses whether the project-induced creation of ignorance leads to the displacement of local knowledge and the adoption of new methods.

M. Krelowska‐Kulas · Food / Nahrung · Poland (Kraków)

An investigation using atomic absorption spectroscopy in Kraków, Poland, found that vegetables from urban allotment gardens had average levels of lead, cadmium, copper, zinc, and iron several times higher than control samples from farms 100 km away. In some cases, maximum levels of certain elements approached the admissible limit. However, average levels of lead and cadmium in pigs and cattle showed no reason for objection.

P. van Lune · Netherlands Journal of Agricultural Science · Netherlands

A study analyzed cadmium (Cd) and lead (Pb) in soils and crops from 57 allotment gardens in potentially contaminated areas of the Netherlands. The median Cd and Pb concentrations in the soil samples were found to be higher than those in soils used for arable farming and horticulture. However, Cd and Pb concentrations in the crops themselves were normal.

Michael S. Jamison · Sociological Quarterly · Global

This study assesses the organizational cultures of collectives and bureaucracies within the urban gardening movement, finding serious underlying differences despite government assistance. Although government agencies provided resources and established projects, collectives and bureaucracies interpreted the urban gardening experience differently. This divergence in understanding the benefits and structuring the experience reveals a source of potential bureaucratic/collectivist conflict.

Bernard Hourcade · Revue Géographique de l Est · Iran (Tehran)

This research investigates the origins and current economy of the Anti-Alborz region, an arid mountain east of Tehran, Iran. Due to military compounds and royal hunting grounds, the expansion of Tehran has been artificially limited, leaving the Anti-Alborz as a remote area. In this region, urban, agricultural, and pastoral economies are growing in conflictual ways, indicating governance challenges in managing land use and development.

Taizan Oishi, 堪山 大石 · Institutional Repositories DataBase (IRDB) · Japan

This study analyzed the transformation and reorganization processes of suburban agriculture and farmers in urbanizing areas, including "former farmer groups." It examined land conversion, changes in crop cultivation, farmer numbers, and agricultural employment. The research found that rental housing management is not economically viable, and that due to an abnormally high land price appreciation rate, the earlier rental housing management is undertaken, the greater the loss incurred, despite an observed increase in rental housing.