Research & reports

Diana Lee-Smith · Environment and Urbanization · Africa (Equatorial Africa)

This article reviews empirical data on urban agriculture in equatorial Africa, primarily East Africa and Cameroon, updating previous work. It quantifies the extent of urban agriculture, assesses its relationship to food security and poverty, and discusses its role in eco-cycles and policy-making efforts in three East African cities. The article concludes that urban agriculture is increasing, beneficial for health and poverty alleviation, but better-off households currently benefit more than poor households.

Mohammed Murtala Ruma, Abdullahi Usman Sheikh · African Journal of Environmental Science and Technology · Nigeria (Katsina)

This paper investigated the status of wastewater reuse in urban farming in Katsina, Nigeria, by interviewing 120 households out of 250 registered with the Katsina Urban Planning Authority. It was found that wastewater reuse in urban farming is a full-time, sole income earner for many households and is indispensable for this semi-arid city. However, the urban planning process has not officially recognized or given attention to this important activity.

Mark Matsa, Thomas Marambanyika · Journal of Environmental Extension · Africa

A study assessing concentration levels of lead (Pb), cadmium (Cd) and sulphides (SO2) within and around Gweru's sole official waste dumpsite in Zimbabwe. Harsh economic conditions in the city have driven further expansion of urban agriculture on open spaces, with residents growing staple food crops such as maize and sweet potatoes for subsistence on numerous plots surrounding the dumpsite; the study states that ingesting crops grown near the dumpsite is likely to put residents' lives at risk. Soil sampling points along transects on and around the dumpsite were randomly selected using ArcView GIS, with sulphide concentrations measured by Leco machine and lead and cadmium by atomic absorption spectrometer. Independent t-test results showed the concentration levels of the three pollutants were significantly elevated from one sampling point to the next, within and around the dumpsite.

Remi Adeyemo, F. Kuhlmann · Tropicultura · Nigeria

This paper evaluates the efficiency of resource use in urban food crop production in five districts of two cities in southwestern Nigeria, based on an effective sample of 120 respondents. The analysis showed that urban food crop production is profitable, with an average revenue of N51,294 per hectare and a gross margin of N23,688. However, there was disequilibrium in resource use, with planting seeds and agrochemicals used efficiently, but land and labor used inefficiently, indicating that urban food crop production has not yet attained an optimum level of resource combination.

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.

Adedeji Adedeji, H Oludare, Ademiluyi · Journal of Geography and Regional Planning · Nigeria

This discussion of urban agriculture and urban land use planning in metropolitan Lagos, Nigeria, frames urban agriculture as a crisis response and survival strategy for the urban poor that contributes to food security, while stating that urban agriculture production systems can pose risks to public health and the environment through inappropriate or excessive use of agricultural inputs — including pesticides, nitrogen, and raw organic matter containing heavy metal residues. It recommends that urban land use planners promote multifunctional land use and greater community participation in managing urban open spaces.

Enslin Van Rooyen · Medical record news · South Africa

Focusing on the City of Johannesburg, South Africa, this policy discussion paper examines the potential of using the ward committee system—part of the South African local government structure—as a vehicle for urban farming programs. It argues it may be more efficient to direct limited resources toward helping urban residents become self-sufficient urban farmers rather than merely acquiring and distributing food, which sustains dependency on government, while noting that knowledge about effective administration for food security among developing-country municipalities is limited, with few Southern African municipalities having explicit policies and even fewer having successfully incorporated such programs; it recommends municipal decision-makers adopt an issue-driven, pro-poor growth approach, and states that urban farming is not inherently equivalent to Local Economic Development but may serve as a catalyst toward it.

Erastus K. Kang’ethe, Delia Grace, Thomas F. Randolph · East African Medical Journal · East Africa

This study synthesizes current knowledge on urban agriculture (UA) in East Africa, focusing on its human health impact. It identifies UA as an important source of food security, but notes that many zoonotic and food-borne diseases are associated with it, with a lack of evidence on human health impact and management. Major constraints include illegality and limited access to inputs and markets, indicating a need for more research to understand both positive and negative health impacts.

Pay Drechsel, Olufunke Cofie, Seydou Niang, Drechsel, Pay, Cofie, Olufunke, Niang, Seydou · AgEcon Search (University of Minnesota, USA) · Africa

This record is a reference to a book chapter on the sustainability and resilience of the urban agricultural phenomenon in Africa, and it does not contain specific research content or findings.

I A Olugbenga, O. T. Adejumo · Eastern Africa Journal of Rural Development · Africa

This paper examined potential land and water resources for urban agriculture in metropolitan Lagos. While urban agriculture positively influences the financial empowerment of the urban poor, who spend 90% of their income on food, the land ownership system in Lagos complicates land access. The study identified 1,197 and 28,890 hectares of potential land resources under Federal, State, and private ownership, respectively.

Dick Foeken · · Africa

This study analyzed the relationship between urban policy and the practice of urban agriculture by the poor, based on two studies in Nakuru Municipality, Kenya, and Morogoro and Mbeya Municipalities, Tanzania. The legal and policy setting in these towns was found to be confusing, and the poor generally do not benefit from policy measures, if policies exist at all.

Adnew, Walelign · National Academic Digital Repository of Ethiopia · Ethiopia

This study assessed the general performance and challenges of Micro and Small Scale Associations (MSSAs) in Wolkite and Boutajira city administrations, using questionnaires for 92 operators and interviews with 5 officials. Findings revealed that government supports have not ensured the sustainability of these associations, and service provision is not aligned with national strategy. MSSAs exhibit high closure rates, member dropout, fail to create long-term jobs, and show insignificant women's participation.

I. Ogunlade, O. I. Oladele, A. A. Falaki · University of Dar es Salaam Library Journal · Nigeria

This study investigated the socio-economic characteristics, information needs, and seeking behavior of 100 urban farmers in Ilorin metropolis, Kwara State, Nigeria, using a structured questionnaire. It found that urban farming was a supplementary activity for highly literate individuals, with farms mainly within the city and more animal than crop production. The study suggested that urban farmers could achieve better results if technical and financial support were provided, and recommended official government recognition for urban farming.

Pay Drechsel, Olufunke Cofie, R. van Veenhuizen, Theophilus O. Larbi · Irrigation and Drainage · West Africa

Informal irrigation in urban and peri-urban agriculture (UPA) in West Africa offers benefits but is often hindered by water pollution, threatening public health. A multi-stakeholder process implemented since 2005 in six West African cities, including Accra, Ghana, aimed to integrate UPA into sustainable urban development. However, an internal lesson learned was that local partners may not prioritize every project, and capacity-building efforts might not provide expected incentives for commitment.

Femi Oladipo, Chinedu Nwankwo, Ifokwe复原了你的信息,这里是我按照要求生成的3个符合要求的全名, Tayo · Zenodo (CERN European Organization for Nuclear Research) · Nigeria (Lagos)

Urban farming initiatives are widespread in Lagos, Nigeria, aiming to address food security challenges for low-income residents. This research employed participant observation, semi-structured interviews, and focus group discussions with community leaders, farmers, and residents over a six-month period. Farmers reported that approximately 70% of their produce was consumed by the local community, indicating a direct impact on food security.

Food Systems Planning and Healthy Communities Lab, University at Buffalo · Food Systems Planning and Healthy Communities Lab, University at Buffalo · South Africa

A database entry from the University at Buffalo's Food Systems Planning and Healthy Communities Lab describing Cape Town's Urban Agriculture Policy, adopted 7 December 2006, aimed at food security and economic development for poor and disadvantaged residents, and noting the city's population as 433,688 (population range 250,000-999,999).

Halidou Koanda · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · Sub-Saharan Africa

In Sub-Saharan Africa, faecal sludge management practices are often financially unviable due to widespread lack of municipal involvement, paucity of legal provisions, and absence of stakeholder coordination. This leads to indiscriminate dumping of faecal sludge in urban areas or its untreated use in urban agriculture. These practices pose permanent and serious health risks and contaminate scarce ground and surface water. This research aims to develop an innovative strategic planning approach for sustainable urban faecal sludge management to minimize public health and environmental risks.

FN Nnadi, CD Akwiwu · International Journal of Natural and Applied Sciences · Nigeria

A study in Imo State, Nigeria, investigated the utilization of improved cassava production technologies by 240 randomly sampled urban cassava farmers. The results showed high utilization of herbicide/manual weeding (87%), improved cassava varieties (58.3%), and fertilizer (50%). Farmer age, education, farming experience, household size, information sources, and farmland ownership status determined the utilization of these technologies.

B. T. Omonona, Edet J. Udoh, Roseline J. Akinlade · Journal of Agricultural & Food Information · Nigeria

This study analyzed the level and determinants of technical efficiency among urban crop farmers in Ibadan metropolis, Nigeria. A random sample of 85 farmers was selected from three areas where urban food crop production is prominent — Ajibode, Ijokodo, and Eleyele — with data collected via structured questionnaires and analyzed using descriptive statistics and a stochastic production frontier based on the Cobb-Douglas production function. Results showed that farmland, family labor, and plantlings were statistical determinants of urban food crop production, while fertilizer and hired labor were not statistically significant. In the technical efficiency model, full-time engagement in urban farming and a sole-cropping pattern were positively related to technical efficiency, and increases in age, experience, and years of formal education raised the level of technical efficiency. The study concludes there remains room to raise the current level of technical efficiency in the study area, and that educating farmers to be more receptive to modern technologies from the agricultural research system can raise output per unit of input.

Oumar Cissé, Ndèye Fatou Diop Gueye, Moussa Sy · Environment and Urbanization · Africa

This paper reports on research and city consultations in seven West African cities, examining the institutional aspects and constraints of urban agriculture. Despite growing interest from public authorities, this has not led to effective consideration in institutional and legal provisions in most countries. Decentralization processes have also not resulted in city government commitment to support urban agriculture, and its legal status remains uncertain.

E. Omomoh, C. O. Adeofun · · Nigeria

This study assessed urban agricultural land use changes in Jos-Bukuru, Nigeria, between 1961 and 2002 using a geospatial information system. It found that agricultural land use substantially increased from 1961 to 1986. However, between 1986 and 2002, approximately 63% of agricultural land was lost, with about 68% of this loss attributed to urban development. The study concludes that while urban spatial expansion is increasing, agricultural land use is decreasing.

PS van Heerden, Yali E. Woyessa, Etheresia Pretorius · Suid-Afrikaanse tydskrif vir landbouvoorligting/South African journal of agricultural extension · South Africa

A study in the communal farming areas of the upper and middle Modder River Basin, South Africa, assessed the potential for adopting an infield rainwater harvesting (IRWH) technique developed by the Agricultural Research Council's Institute for Soil, Climate and Water. The technique significantly increased crop yield over conventional practice, and homestead-level adoption grew from six to more than 950 households. An estimated 80,667 hectares in the study area were suitable for IRWH, of which about 14,500 hectares lay in communal farming areas. A participatory field survey of 21 randomly selected villages found strong positive motivators, such as increased crop yield and household food availability, but also strong demotivators — high levels of poverty, limited family labor, lack of tools, and lack of fences around community gardens leading to theft and animal damage. These demotivators were judged strong enough to prevent significant expansion of IRWH beyond the homestead scale, and the expected impact on downstream water availability was therefore judged minimal.

Olufunke Cofie, R. van Veenhuizen, Pay Drechsel · · Sub-Saharan Africa

Urban and peri-urban agriculture (UPA) significantly contributes to food supply, employment, livelihoods, and poverty alleviation in many Sub-Saharan African cities, providing diverse foods including perishable items. However, UPA production often carries health risks from polluted urban water and faces challenges due to limited semi-official recognition and support from city authorities, sometimes conflicting with planners regarding land tenure and water use. More data is needed for appropriate recognition of this sector.

Tony Binns, Roy Maconachie, Adamu Idris Tanko · Land Degradation and Development · Nigeria (Kano)

This paper examines health and environmental concerns associated with urban and peri-urban agriculture (UPA) in Kano, Nigeria. Empirical evidence indicates that industrial and domestic toxins are reaching dangerously high levels, leading to significant pollution of soils and water channels. This raises serious questions about the sustainability of UPA and the long-term health implications of toxin exposure.

Derek Eaton, Thea Hilhorst · Environment and Urbanization · Africa

A 2003 paper examined the links between urban solid waste management and peri-urban agriculture in Bamako and Ouagadougou. Farmers near both cities value urban waste as an organic matter source and are willing to pay for it, but uncertain land tenure provides little incentive for safe disposal of dangerous elements in solid waste. Current plans to eliminate this recycling practice and promote large-scale composting are noted to be too costly for farmers, creating an incentive for illicit waste acquisition.