Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Importance of Horticulture in Adoption of Climate Smart Agriculture in Ethiopia Short Systematic Review
2024Kebede Tedila Tadesse · Journal of Food Technology & Nutrition Sciences · Ethiopia
This systematic review, conducted at Debre Berhan University, Ethiopia, assessed the role of horticulture in adopting climate-smart agriculture (CSA). Ethiopia's agriculture, which is the backbone of its economy, is adversely affected by climate variability and extreme events. CSA is presented as a primary solution to sustainably increase productivity, enhance resilience, reduce greenhouse gas emissions, and achieve food security. The principles of horticulture, including urban and peri-urban agriculture, silviculture, and agroforestry, are highlighted as having a strong capacity to adopt CSA.
Climate changePeri-urban agricultureFood sovereignty & justiceAssessment 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 agriculturePrincipales 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 & justiceHeavy 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 agricultureHealthEffects 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 changeA 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 & justiceWelfareLosing 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 agricultureGrafting observation of tomatoes on potatoes for urban and peri-urban agriculture in North Wollo Sirinka
2022Tadesse Wudu, Adimasie Kassaw · International Journal of Horticulture and Food Science · Ethiopia
An observational study in Sirinka, Ethiopia, in October 2018, investigated grafting 30-day-old tomato seedlings onto 20-day-old potato seedlings to create "pomato" plants for urban agriculture. Successful graft unions were observed after two weeks, with plants producing both tomatoes (average 18 fruits, 954g per plant) and potato tubers (4-5 tubers, 219.27g per plant). The experiment confirmed the success of the graft, suggesting its potential for home gardeners.
DIYPeri-urban agricultureGouvernance Du Foncier Agricole Dans L’arrondissement De Zinvie : Enjeux Et Perspectives
2022Enagnon Arsène Euloge YAOVI, Martial WOROU, Bola A. MALOMON, Sylvain A. VISSOH · International Journal of Progressive Sciences and Technologies · Africa
This research in the Arrondissement of Zinvié, Africa, investigated agricultural land governance through surveys of 109 people and field observations. Findings indicate rapid urbanization is causing anarchic land occupation and uncontrolled consumption of agricultural space, with renting being the dominant land access mode (50%). From 2010 to 2020, cultivable land decreased by 517.69 hectares due to urbanization, highlighting significant governance challenges.
Governance failurePolicyUrban–rural linkagePeri-urban agricultureHousehold Dietary Patterns and Food Security Challenges in Peri-Urban South Africa: A Reflection of High Unemployment in the Wake of Rising Food Prices
2022Gamuchirai Chakona · · South Africa
A study surveyed 314 randomly selected households in four peri-urban settlements in South Africa to assess dietary diversity and food security. Findings revealed generally low dietary diversity and high levels of food insecurity across all sites, with male-headed households experiencing worse conditions than female-headed households. Food insecurity was linked to high poverty, unemployment, and low education levels.
Equity & displacementFood sovereignty & justiceWelfarePeri-urban agricultureEconomicsContinuity under change: Towards a spatiotemporal understanding of market-oriented urban and peri-urban agriculture – Insights from Kenya
2021Alexander Follmann, Maximilian Willkomm, Gilbert M. Nduru, George Owuor, Peter Dannenberg · Applied Geography · Kenya
This study analyzes the spatiotemporal dynamics of market-oriented urban and peri-urban agriculture (UPA) and farmers' responses to changing socio-spatial circumstances in Nyeri and Nakuru, Kenya. Findings indicate that the continued existence of market-oriented agriculture in these cities is linked to dynamic processes of commercialization, specialization, and intensification. The research concludes that market-oriented farmers are not inevitably displaced but can actively adapt to pressures and opportunities arising from rapid urban growth.
Peri-urban agricultureEconomicsUrban–rural linkagePotential for Sustainable Urban and Peri-Urban Agricultural Practices in Nairobi County
2021Mary Njoki Mwaura, Sabina Mukoya-Wangia, Japheth Ododa Origa, O.L.E. Mbatia, Evans Chimoita · Journal of Agricultural Extension · Kenya
A study of 149 respondents in Nairobi County examined urban and peri-urban agricultural practices, finding composting and open field farming popular but not the most profitable. More profitable practices like cattle rearing and mushroom farming were unpopular due to expensive inputs and specialized skills. The study indicates that popular practices are less profitable, highlighting a need for transformation towards controlled environment agriculture with policy support.
Economic viabilityCompostOrganic cycleEconomicsPeri-urban agricultureDigital agricultureEXPLORING THE RECYCLING OF MANURE FROM URBAN LIVESTOCK FARMS: A CASE STUDY IN ETHIOPIA
2021Solomon Tulu Tadesse, O. Oenema, Christy van Beek, Fikre Lemessa Ocho · Frontiers of Agricultural Science and Engineering · Ethiopia
This study in Jimma, Ethiopia, from 2015-2050, used an N mass flow model and field experiments to explore manure recycling from urban livestock farms under four scenarios. It found that livestock manures are the main organic wastes in urban areas, and manure production in urban and peri-urban agriculture (UPA) is projected to increase 3 to 10 times. Critically, only 13% to 38% of manure nitrogen will be recycled in croplands, and intensification of urban livestock production greatly increased nitrogen surpluses, indicating a significant environmental tradeoff.
Environmental trade-offsOrganic cyclePeri-urban agricultureFood sovereignty & justiceCompostImpact of urban expansion on the peri-urban farming communities: the case of lalibela town, amhara regional state, ethiopia.
2021Nibret Sefiw Adugnaw · Open access jounrals · Ethiopia
This study examines the impact of urban expansion on peri-urban farming communities in Lalibela town, Amhara Regional State, Ethiopia.
Peri-urban agricultureUrban–rural linkagePolicySAVINGS MOBILIZATION ON POVERTY ALLEVIATION AMONG PERI-URBAN HOUSEHOLDS IN KWALI AND BWARI AREA COUNCILS F.C.T ABUJA, NIGERIA
2021Juliana Ojochide Olori, Ogechi Cordelia Nwahia, F. Siewe · Agricultural Social Economic Journal · Nigeria (Abuja)
A study analyzed savings mobilization for poverty alleviation among 185 peri-urban farming households in Kwali and Bwari Area Councils, Abuja, Nigeria, using cross-sectional primary data. The analysis revealed a poverty incidence of 49%, a poverty depth of 28%, and a poverty severity of 56% among the households. Findings indicated that primary occupation and education reduced the likelihood of not being poor but increased the likelihood of being very poor.
Economic viabilityWelfareEconomicsPeri-urban agriculturePERI-URBAN FARMING FOR IMPROVED INCOME: CASE OF FLUTED PUMPKIN PRODUCTION IN SABON GARI LOCAL GOVERNMENT AREA OF KADUNA STATE, NIGERIA.
2020H. Shuaibu, A. Yakubu, Abubakar Hassan, Bassey Emmanuel · Ife Journal of Agriculture · Nigeria
A study in the Sabon Gari Local Government Area of Kaduna State, Nigeria, assessed the impact of peri-urban farming on household income, focusing on 120 fluted pumpkin farmers. Farmers realized a gross margin of N16,480 and a return per investment (RNI) of N1.98 annually. Sex, marital status, household size, and years of experience significantly influenced profitability, while 32% of farmers reported inadequate rainfall, 32% financial constraints, and 21% low productivity.
Peri-urban agricultureEconomicsFood sovereignty & justiceEconomic linkage between urban development and livelihood of peri-urban farming communities in Ethiopia (policies and practices)
2020Idris Mohammed, Abdella Kosa, Nuredin Juhar · Agricultural and Food Economics · Ethiopia
This study assessed the economic linkage between urban development and the livelihood of peri-urban farming communities in Ethiopia, focusing on current practices and policies. Data was collected from 30 municipal officials and 200 evicted peri-urban farmers across five municipalities in the Amara regional state. Findings indicate that the continuous eviction of peri-urban farmers from their indigenous land for redevelopment negatively affects their livelihood, highlighting significant equity issues. Factors contributing to urban expansion include economic policy reform, private investor incentives, and public sector projects, further exacerbated by policy limitations and lack of municipal intervention.
Equity & displacementPeri-urban agricultureEconomicsPolicyFood sovereignty & justiceSoil Properties and Fertility Management within Ruiru Peri-Urban Area in Kiambu County, Kenya
2020F. Waswa, M. Mwamburi, I. I. C. Wakindiki, Roseline Chemutai · Journal of applied science and environmental management · Kenya
This study focused on soil physicochemical properties and fertility management in Ruiru Sub County, a peri-urban area in Kiambu County, Kenya. Soil samples from ten small contact farms (~0.1 ha) were analyzed, revealing that most farmers were tenants growing leafy vegetables, maintaining soil fertility with organic manures, and performing tillage by hand. These practices signal limitations imposed by small farm size and lack of land ownership, with soil fertility primarily limited by the interaction of soil pH, K, and Ca.
Economic viabilityOrganic cyclePeri-urban agricultureEconomicsDoes Urban and Peri-Urban Agriculture Contribute to Household Food Security? An Assessment of the Food Security Status of Households in Tongaat, eThekwini Municipality
2019Nolwazi Z. Khumalo, Melusi Sibanda · Sustainability · South Africa
This paper assessed the food security status of 208 households (109 urban and peri-urban agriculture (UPA) practicing, 99 non-UPA practicing) in Tongaat, eThekwini Municipality, South Africa. While a greater proportion (54%) of UPA practicing households consumed more than six food groups compared to non-UPA households (40%), a Mann-Whitney U test (U = 5292, p = 0.808) found no significant difference in dietary diversity between the two groups. Employment status, access to arable land, land tenure, and household monthly income were significantly associated with food security status.
Food sovereignty & justiceWelfareEconomicsPeri-urban agriculturePratiques phytosanitaires en agriculture périurbaine et contamination des denrées par les pesticides : cas des maraîchers de Port-Bouët (Abidjan)
2019· Journal of Animal and Plant Sciences (J Anim Plant Sci ) ISSN 2071 – 7024 · Africa
A study in Port-Bouët, Abidjan, examined market gardeners' phytosanitary practices and pesticide residue incidence on lettuce. It found that 39.6% of pesticides used were not recommended for market gardening, 86.84% of gardeners did not protect themselves during application, and 80.26% did not observe pre-harvest intervals. Consequently, 93.33% of lettuce samples did not comply with Codex Alimentarius and EU standards due to high pesticide residue contamination.
Contamination & food safetyPeri-urban agricultureHealthFarmers' Perception, Willingness and Capacity in Utilization of Household Sewage Sludge as Organic Resources for Peri-Urban Agriculture around Jos Nigeria
2019Cosmos C. Alamanjo, Abimbola O. Adepoju, H. Martin, R.N. Baines · Zenodo (CERN European Organization for Nuclear Research) · Nigeria (Jos)
This mixed-methods study investigated farmers' perceptions, willingness, and capacity to use household sewage sludge as organic resources for peri-urban agriculture around Jos, Nigeria. Farmers were found to use a complex mix of fertilizers and were keen to utilize household sewage sludge for soil fertility, though constrained by accessibility. A critical finding was that household sewage sludge observed in the field is heterogeneous due to its proximity to urban refuse disposal, raising concerns for possible cross-contamination of pollutants and indicating a lack of extension guidance.
Contamination & food safetyPeri-urban agricultureOrganic cycleCompostHealthDrought Mitigation Policies: Waste Water Use, Energy and Food Provision in Urban and Peri-Urban Africa
2019Hendrick J. Bruins · · Africa
This paper discusses drought mitigation in urban and peri-urban Africa, where severe droughts threaten food production under rainfed agriculture. It argues that while urban and peri-urban farming's informal private sector should not be government-controlled, the treatment and use of urban wastewater in agriculture requires government planning, investment, and extension services. Participatory development is suggested to integrate central wastewater planning with private farmer use.
PolicyPeri-urban agricultureFood sovereignty & justiceOrganic cycleOnion (Allium Cepa) Production in Urban and Peri-Urban Areas: Financial Performance and Importance of this Activity for Market Gardeners in Southern Benin
2018Fabrice Dossa · Agricultural Research & Technology Open Access Journal · Benin
A study in southern Benin surveyed 60 onion farmers across three municipalities (Grand-Popo, Cotonou, Sm-Kpodji) using quantitative and qualitative methods. It found onion production to be financially profitable, with performance enhanced by age, experience, and producer group membership, and improving socio-economic and food situations. However, significant constraints include financial, institutional, organizational, property, and production-related issues.
Economic viabilityEconomicsPeri-urban agricultureFood sovereignty & justiceStrengthening Food Security through Peri-Urban Agriculture in Ibadan, Nigeria
2018Bolanle, Oluwafisayo Wahab, Abiodun Abiodun · Ghana Journal of Geography · Nigeria
This study examined peri-urban agriculture (PUA) in Ibadan, Nigeria, by surveying 230 randomly selected farmers across six local government areas. Findings showed farmers benefited from opportunities like abundant land (47.4%) and good soil (32.2%), but faced major challenges including inadequate finance (43%), farm encroachment (15.7%), and erosion/flooding (13.5%). The study concluded that PUA opportunities in Ibadan can strengthen food security, recommending government support for finance and development control.
Peri-urban agricultureFood sovereignty & justiceEconomicsClimate change