Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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A GIS-based assessment of flood impact on agricultural farm activities along river Dilimi, JOS north local government area of Plateau state
2024Epsar Philip Kopteer, Olakunle Rufus Oladosu, Samuel Adeyemi Samson, Jasini Ali Alwadood, Olaide Monsur Aderoju, Bose Adetutu Ogwurike, Michael Nnaemeka Ihenacho, James Adah John, Philip Okoh Amodu, Nkechinyere Gift Nwagwu, Chikodili Evans Ezurike, Kamila Abba Tukur, Augustine Abah Odeh, Sumaiyat Abdullahi Kpanja, Halimat Ifedolapo Oriola, Vivian Ibrahim, Udya Aniya, Elizabeth Rizga Jackson, Kikelomo Oluwabukola Adebo · World Journal of Advanced Research and Reviews · Nigeria (Jos)
This study investigated the economic impact of urban flooding on agricultural activities along the Dilimi River in Jos North LGA, Plateau State, Nigeria, using a 2021 satellite image and GIS analysis. The study found that loss of farmland, hunger and starvation, loss of properties, and high incidence of poverty were perceived as serious economic impacts of floods on farmers. Agricultural land use covered 2.82% of the study area.
Economic viabilityClimate changeEconomicsFood sovereignty & justiceExploring the factors influencing urban farmers’ perception and attitude toward the use of excreta-based organic fertilizers in Arba Minch City, Ethiopia
2024Abrham Kassa Ejigu, Kumelachew Yeshitela · Frontiers in Sustainable Food Systems · Ethiopia
This study assessed factors influencing urban farmers’ intentions to adopt excreta-based organic fertilizers in Arba Minch City, Ethiopia, using the Combined Model of Theory of Planned Behavior and Technology Acceptance Model (C-TPB-TAM). Data was collected via surveys from urban farmers. Findings indicate that attitudes, perceived behavioral control, perceived usefulness, and perceived ease of use significantly affect farmers’ intentions. However, the subjective norm did not significantly affect farmers’ intentions.
CommunityOrganic cycleAdoption and desirable characteristics of Information and Communication Technologies for urban small-scale food producers in South Africa
2024Robert Massimo Alfonsi, Merle Naidoo, Alexandros Gasparatos · Frontiers in Sustainable Food Systems · South Africa
This study examined ICT adoption and desirable characteristics among 85 urban small-scale food producers in disadvantaged areas of Cape Town and Johannesburg, South Africa, using in-person surveys. Respondents expressed a need for food-related mobile applications facilitating price comparisons, best practice sharing, and health advice, prioritizing user-friendliness, low data use, and affordability. Redundancy analysis (RDA) showed that socioeconomic and demographic characteristics, such as marital status, number of children, income, education, and land holdings, significantly influenced desired app functionalities and activities.
Digital agricultureEconomicsCommunityEffects of Urban Agriculture on the Socio-Economic Status of Farmers in Cities of Sub-Sahara Africa. A case of Zambia, South Africa, and Nigeria: A Review
2024Leonard Ninsheka, Edward Ssemakula, Christopher Ewaechabo Tiyo, Rebecca Kalibwani, Ronald Kityo, Wilson Mugizi, Willbroad Byamukama · East African Journal of Agriculture and Biotechnology · Sub-Saharan Africa
This review paper examines existing literature on the effects of urban agriculture on the socio-economic status of urban farmers in Sub-Saharan African cities, specifically focusing on Zambia, South Africa, and Nigeria. The review found scanty information regarding how urban agriculture affects farmers' socio-economic status, how farmers derive social and economic status from it, and the types and motivations of farmers. It concludes that understanding crucial factors for food security, income, and related benefits in urban agriculture is essential for policy and technology development.
EconomicsFood sovereignty & justiceWelfareCommunityThe contribution of open spaces in Mekelle city on crop production during absolute siege in Tigray Region, northern Ethiopia
2024Tiegsti Hadush, Tarik Gebrekiros · Urban Agriculture & Regional Food Systems · Ethiopia (Mekelle)
In Mekelle city, Ethiopia, available open spaces were utilized for crop production after the Tigray siege. This study employed remote sensing and a household survey to assess the area of urban open spaces cultivated after the siege and their contribution to crop production. The open spaces in Mekelle city contributed 2687 hectares of newly cultivated land, producing 3825 tonnes of wheat and 880 tonnes of barley grain.
Food sovereignty & justiceCommunityPolicyChapter 2. Stone by stone: Women's quotidian farm labor and the construction of the Khutwaneng farmscape in Bokoni, South Africa
2024Maria H. Schoeman · Archeological Papers of the American Anthropological Association · South Africa
In Bokoni, northeastern South Africa, stone-walled towns flourished from the late 15th to early 19th centuries, and lidar data confirmed the presence of terraced fields in Khutwaneng from the 17th to early 19th centuries. All homesteads in this town had adjacent terraced gardens or fields, suggesting that urban farming was an entrenched component of Bokoni's urban life. Historically, women performed daily farming duties in southern Africa, and this was likely also the case in Bokoni.
CommunityUrban–rural linkageThe Health Burden of E-Waste: The Impact of E-Waste Dumping Sites on Child Mortality
2024Stefania Lovo, Samantha Rawlings · The World Bank Economic Review · Ghana, Nigeria
This study investigated the impact of e-waste dumping sites on neonatal and infant mortality, focusing on two major dumpsites in Ghana and Nigeria. Using a difference-in-differences approach, outcomes were compared for children born near and far from dumpsites before and after their creation. E-waste sites increased neonatal and and infant mortality for those living closer to the sites, with event studies suggesting effects emerge two to three years after site openings. There is suggestive evidence that contamination of water and of urban farming produce are among the drivers of the observed effects.
Contamination & food safetyHealthEconomicsAssessment of concentrations of heavy metals in three leafy vegetables irrigated with wastewater in Hadnet district, Mekelle, Ethiopia
2024Hailekiros Tadesse Tekle, Desta Berhe Sbhatu, Gebreselema Gebreyohannes · H2Open Journal · Ethiopia (Mekelle)
A study in Hadnet district, Mekelle, Ethiopia, assessed heavy metal concentrations in wastewater, spring water, and three leafy vegetables (lettuce, spinach, cauliflower). Wastewater samples from four experimental sites exceeded permissible limits for 4 out of 10 heavy metals (Cd, Cr, Cu, Mn), and spring water from a comparison site also exceeded limits for 4 metals (Al, As, Cd, Cu). Leafy vegetables grown in the least contaminated experimental site showed high concentrations for 6-7 out of 10 heavy metals, with lettuce and spinach having elevated levels of As and Al, respectively. The study concluded that the wastewater used for irrigation is not safe, the farm soils may have accumulated significant heavy metals, and the cultivated vegetables are highly contaminated, necessitating regulation of wastewater use for irrigation.
Contamination & food safetyHealthPeri-urban agricultureDeterminants of urban agriculture market participation decision and intensity in eastern Ethiopia
2024Gebregziabher Nigus, Mengistu Ketema, Jema Haji, Million Sileshi · Discover Food · Ethiopia
A study was conducted in Eastern Ethiopia using primary data from 270 randomly selected urban farmers to identify factors influencing urban agriculture (UA) market participation decisions and intensity. The first stage of the Double Hurdle (DH) Model indicated that age, education, occupation, family size, farming experience, UA-related training, dependency ratio, and market information significantly impacted the decision to participate in the UA output market. The second stage DH Model showed that education, land size, UA-related training, and market information significantly affected the intensity of UA output market participation.
EconomicsFood sovereignty & justiceCommunityThe Disenfranchisement of Practitioners and the Public Sector in Innovative Urban Farming in Sub-Saharan Africa: Insights from Nigeria
2024Emmanuel Olatunbosun Benjamin, Abiola Adegoke, Gertrud Buchenrieder · Land · Nigeria (Lagos)
This exploratory qualitative research, conducted in Lagos, Nigeria, used focus group discussions to compare the perspectives of private urban farmers and public sector representatives on innovative urban farming. Urban farmers identified a lack of public sector support for circular agri-food technologies, while public sector representatives attributed issues to farmers' behavioral and educational shortcomings, including poor coordination. These differing views highlight complex dynamics and a need for structural changes and stakeholder dialogues to develop effective urban farming policies in Sub-Saharan Africa.
Governance failureFood sovereignty & justicePolicyCommunityDigital agriculturePotential of ecological water treatment elements to reduce pollution of river water used for urban agriculture in Addis Ababa, Ethiopia
2024Terusaw Solomon, Kumelachew Yeshitela, Wondmagegn Taye Abebe · Discover Water · Ethiopia (Addis Ababa)
This study assessed the effectiveness of a vetiver grass floating treatment wetland in reducing irrigation water pollution at the Mekanisa-Gofa-Lafto Cooperative farm in Addis Ababa, Ethiopia. After a 7-day treatment, the wetland reduced BOD (73.68%), COD (73.92%), pH (0.39%), Chloride (43.12%), Total Hardness (66.56%), and TSS (96.21%), approaching recommended irrigation water quality guidelines within 3 days. However, Electro Conductivity (22.2%) and Sodium (15.2%) concentrations increased, exceeding recommended values.
HealthOrganic cycleClimate changePrincipales spéculations maraîchères cultivées dans les zones urbaines et périurbaines de la ville de Kinshasa (<i>Synthèse bibliographique</i>)
2024Jean de Dieu Minengu, Aiko Ikonso Mwengi, Romain Kawanga, Simon Mwengi, Oscar Mangunda Yama · Revue Africaine d’Environnement et d’Agriculture · Africa
Market gardening in Kinshasa's urban and peri-urban areas faces multiple constraints, including land insecurity, low natural soil fertility, the incidence of diseases and pests, weak technical support, climate hazards, poor input supply, and problematic marketing systems. These constraints limit yields in production sites and hinder the development of market gardening activities.
Governance failureUrban–rural linkagePeri-urban agricultureEconomicsClimate changeFood sovereignty & justiceUrbanization, civil conflict, and the severity of food insecurity in Africa
2024Aristophane Djeufack Dongmo, Désiré Avom · Politics & Policy · Africa
This article examined the impact of urbanization and civil conflicts on food insecurity severity across 43 African countries from 2000 to 2020 using heterogeneous choice models. Findings revealed that both urbanization and civil conflict increase food insecurity, with a one-unit increase in urban growth rate raising the probability of high-risk food insecurity by over 0.6 times. The study recommends developing urban agriculture and controlling urbanization to mitigate food insecurity.
Food sovereignty & justicePolicyUrban–rural linkageEconomicsThe economic viability of commercial-scale hydroponics: Nigeria as a case study
2023Folorunso E. A., Schmautz Z., Gebauer R., Mraz J. · Heliyon 9(8):e18979 · Nigeria
Evaluates the profitability of ten small- and medium-scale commercial hydroponic farms using NPV, IRR, benefit-cost ratio and sensitivity analysis, finding larger farms more profitable but viability highly dependent on retail prices, crop choice and market size.
EconomicsHeavy metals and trace elements contamination risks in peri-urban agricultural soils in Nairobi city catchment, Kenya
2023Arcadius Martinien Agassin Ahogle, Sammy Letema, Gertrud Schaab, Veronica Ngure, Abraham R. Mwesigye, Nicholas Kibet Korir · Frontiers in Soil Science · Kenya (Nairobi)
This study assessed heavy metal and trace element contamination risks in peri-urban farmlands in Nairobi city catchment, Kenya, by analyzing 60 soil samples from ten vegetable farming zones. Results showed elevated concentrations of elements including As, Cd, Mn, Pb, and Zn, with some exceeding permissible agricultural thresholds. As, Cd, Hg, and Pb exhibited high ecological risks, with Cd contributing 46-66% of the overall risk.
Contamination & food safetyPeri-urban agricultureHealthUrban Agriculture and the Sustainability Nexus in South Africa: Past, Current, and Future Trends
2023Tinashe P. Kanosvamhira · Urban Forum · South Africa
This narrative literature review analyzed 62 peer-reviewed articles on urban agriculture in South Africa from 1993 to 2022. The findings indicate several knowledge gaps, including an under-representation of secondary cities and a general productivist focus in most studies, which limit understanding of urban agriculture for sustainable cities.
Methodological critiqueUrban–rural linkagePolicyBiodiversityAssessing urban transformational strategies through innovative farming practices in the Johannesburg city center
2023Adeline Ngie, Nobukhosi Sithole · Urban Agriculture & Regional Food Systems · South Africa (Johannesburg)
A study in Johannesburg, South Africa, assessed urban transformational strategies, including rooftop gardening and hydroponic farming, aimed at improving food security and regenerating infrastructure. Using open-ended interviews with stakeholders, findings indicated improved household food security and income generation, but challenges such as soil and water flow for rooftop gardens persist. Hydroponics faced hurdles like energy supply and input costs, though it showed more promise for land and water resource efficiency.
Food sovereignty & justiceEconomicsPolicyCommunityDigital agricultureEffects of sand mining on peri-urban agriculture in Ife East and Ife Central Local Government Areas, Osun State, Nigeria.
2023F.E. Awoyelu, R.A. Mebo · Agro-Science · Nigeria (Osun State)
This study assessed the effects of artisanal sand mining on peri-urban agriculture in Ife East and Ife Central Local Government Areas, Osun State, Nigeria, from 2015 to 2019. Data from 120 respondents (landowners, cultivators, residents) showed that cultivated land area decreased by 24.8% (from 48% to 23.2%), while sand-mined area substantially increased by 20.4% (from 14.6% to 35%). Landowners' decision to part with land for sand mining increased with age, household size, and farming as primary occupation, but decreased with higher education levels.
Environmental trade-offsPeri-urban agricultureEconomicsUrban–rural linkageClimate changeAdolescent Students’ Nutritional Knowledge in Boarding Schools and Strategies for Improving their Nutritional Status
2023Adedoyin Osasona Foluso · International Journal of Home Economics Hospitality and Allied Research · Nigeria (Ekiti State)
Adolescent students' nutritional knowledge and strategies for improving their nutritional status were investigated in boarding schools in the Ido-Osi Local Government Area of Ekiti State, Nigeria. A questionnaire was used with 80 boarding house students from three government and private colleges. Findings revealed that a good percentage of boarding school students possessed good nutritional knowledge.
Food educationHealthMeasures for achieving sustainable environment to mitigate climate change in Africa
2023Bismark Osei, Mark Edem Kunawotor, Paul Appiah-Konadu · International Journal of Social Economics · Africa
This study examined measures for achieving a sustainable environment to mitigate climate change in 54 African countries from 2000 to 2020, using panel data and a Cox proportional hazard model. Findings indicate that carbon farming, rooftop gardens, and renewable energy positively contribute to a sustainable environment. However, governance adversely affects the objective of achieving a sustainable environment.
Governance failureClimate changePolicyDIYUrban–rural linkageA Systematic Review of Technology Acceptance and Discontinuance Dynamics for Improved Cassava Planting Material among Ibadan's Peri-Urban Smallholders
2023Chinwe Okonkwo, Ifeoma Nwachukwu, Adebayo Adeyemi · Zenodo (CERN European Organization for Nuclear Research) · Nigeria (Ibadan)
This systematic review synthesized evidence on the determinants of adoption and disadoption of improved cassava planting material (ICPM) by peri-urban smallholders in Ibadan. The review found that disadoption rates can exceed 40% within three seasons post-initial adoption. Perceived Usefulness was the strongest adoption predictor, while Perceived Ease of Use was often compromised by logistical barriers, and vendor trust influenced continued use.
Peri-urban agricultureEconomicsFood sovereignty & justiceURBAN AND PERI-URBAN VEGETABLE PRODUCTION EFFECTS ON FARMERS’ LIVELIHOODS IN LAGOS STATE, NIGERIA
2023Peter Sanjo Adewale, Sunday Clement Olubunmi Makinde, V. Kusemiju · Journal of Environment and Sustainable Development · Nigeria (Lagos)
This mixed-method study in Lagos State, Nigeria, examined the effects of Urban and Peri-urban Vegetable Production (UPVP) on farmers' livelihood subscales using a Household Livelihood Survey and Focus Group Discussion. The findings indicate that all livelihood subscales (Physical, Natural, Financial, Social, Human) were positively and significantly impacted by UPVP, with a moderately high overall impact. The study concludes that UPVP can be a resilient sector for the economy and sustainable development.
Peri-urban agricultureEconomicsFood sovereignty & justiceWelfareIntegrating resource oriented sanitation technologies with urban agriculture in developing countries: measuring the governance capacity of Arba Minch City, Ethiopia
2023Abrham Kassa Ejigu, Kumelachew Yeshitela · Frontiers in Sustainable Cities · Ethiopia (Arba Minch City)
A study assessed Arba Minch City's governance capacity to integrate resource-oriented sanitation technology with urban agriculture. The findings indicated that the city's capacity is hindered by a lack of systematic monitoring, fragmented policy tools, and inadequate public sector participation. There is no single government body responsible for integration, and a behavioral gap exists among users in adapting to new technologies and recovered organic fertilizer.
Governance failurePolicyOrganic cycleClimate changeLosing the Plot: The Impact of Urban Agriculture on Household Food Expenditure and Dietary Diversity in Sub-Saharan African Countries
2023Navjot Sangwan, Luca Tasciotti · Agriculture · Sub-Saharan Africa
This cross-country study analyzed household data from nine Sub-Saharan African countries to investigate the impact of urban agriculture (UA) on household food expenditure and dietary diversity. Using an inverse-probability weighted regression adjustment method, the study found that households engaged in UA reduced overall food expenditure and increased spending on protein-rich foods like nuts, legumes, fruits, dairy, meat, and poultry. The impact of UA varied substantially across the food expenditure distribution.
EconomicsHealthFood sovereignty & justicePeri-urban agricultureAnalysis on Factors Affecting the Growth of Micro and Small Enterprises: The Case of Gulele Sub-City, Addis Ababa, Ethiopia
2023Mohammed Seid Ebrahim · Ethiopian Journal of Business and Social Science · Ethiopia (Addis Ababa)
This study examined factors affecting the growth of micro and small enterprises in Gulele Sub-city, Addis Ababa, Ethiopia, using survey data from 120 enterprise leaders/owners. Enterprises grew at a rate of 0.20, but growth trends varied across sectors including urban agriculture. The analysis found that age, gender, and work experience of leaders/owners, along with enterprise age, employee numbers, workplace suitability, marketing problems, and government policies, significantly influenced growth, indicating that cumbersome bureaucratic procedures contributed to undergrowth and stagnation.
Governance failureEconomicsUrban–rural linkage