Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Critical findings
313 results(5 / 13)
Evaluation of Oyster Mushroom (Pleurotus ostreatus) Production Using Water Hyacinth (Eichhornia crassipes) Biomass Supplemented with Agricultural Wastes
2022Ejigu N., Sitotaw B., Girmay S., Assaye H. · International Journal of Food Science · Ethiopia
Evaluates water hyacinth biomass, alone or mixed with wheat/teff straw, as a low-cost substrate for oyster mushroom cultivation. The authors conclude water hyacinth is a promising cheap substrate owing to its ideal C/N ratio and low lignin, while also helping control the invasive weed.
DIYOrganic cycleEconomicsBuilding sustainable societies through vertical soilless farming: A cost-effectiveness analysis on a small-scale non-greenhouse hydroponic system
2022Gumisiriza M.S., Ndakidemi P., Nalunga A., Mbega E.R. · Sustainable Cities and Society · Africa
A cost-effectiveness analysis (net present value, internal rate of return, payback period) of a small-scale non-greenhouse vertical hydroponic system, examining its contribution to urban food security.
DIYEconomicsExploration of wheatgrass as functional food by using urban agriculture models for regulating growth & nutrients
2022Nilesh L. Patil, Anjali A. Kulkarni, Dinesh Amalnerkar, Swapnil C. Kamble · South African Journal of Botany · South Africa
This study assessed the growth and nutrient values of wheatgrass cultivated in soil, hydroponics, aeroponics, and paper-pulp based potting mix soil. Plantlets from potting mix soil showed the highest height (88.67 cm), weight (15.13 gm), and overall nutrient content. Cost analysis over six months revealed that potting mix soil systems were 17x and 23x cheaper than hydroponics and aeroponics, respectively, making them the most productive for long durations.
DIYEconomicsHealthThe effects of urbanisation on food security in Africa: An overview and synthesis of the literature
2022Bethuel Sibongiseni Ngcamu · Environmental & Socio-economic Studies · Africa
This literature review explored the effects of urbanization on food security in Africa by reviewing eleven empirical journal articles. Findings indicate that rapid, unplanned urbanization has led to increased food insecurity, environmental degradation, and unsustainable food security, exacerbated by ill-prepared and incompetent governments. Key issues identified include poor government interventions, inadequate land-use planning, and high incompetency among urban planners.
Governance failureFood sovereignty & justicePolicyClimate changeEconomicsEffects of Urban Agriculture Practices on Households’ Livelihoods in Ondo State, Nigeria
2022Oluwole Matthew Akinnagbe, Obadamilola Enitan Ipinmoye · DOAJ (DOAJ: Directory of Open Access Journals) · Nigeria (Ondo State)
This study examined the effects of urban agriculture on households' livelihoods in Ondo State, Nigeria, using a multistage sampling procedure with 150 respondents. Major crops and livestock were leafy vegetables (100.0%) and broiler chickens (57.0%), respectively. The majority (82.0%) of urban agriculture practitioners had no contact with extension agents. Urban agriculture significantly improved respondents' standard of living (from 85.0% to 98.0%) and saving patterns (from 66.7% to 100.0%), and also led to improved knowledge.
EconomicsWelfareCommunityDeterminants of Sustainable Growth of SMEs in Developing Countries: The Case of Ethiopia
2022Gemechu Abdissa, Abebe Ayalew, Anna Dunay, Csaba Bálint Illés · Economies · Ethiopia
This study investigated the determinants of sustainable growth for SMEs, including those in urban agriculture, in Ethiopia using primary data from 194 employees. Findings indicate that political instability, corruption, and COVID-19 are significantly harming the growth and long-term sustainability of Ethiopian SMEs.
Economic viabilityEconomicsPolicyDisability-inclusive community development: A case of a community garden in Limpopo province in South Africa
2022Brian Tigere, Theresa Moyo · African Journal of Disability · South Africa
A qualitative study in rural Limpopo province, South Africa, examined the role of community gardens in uplifting persons with disabilities and their communities. Using face-to-face interviews with 21 participants, including people with disabilities and government officials, the study found that community gardens contributed to the economic and social well-being of persons with disabilities by providing income and creating jobs. The study recommends a disability access audit to address accessibility challenges.
CommunityWelfareEconomicsImpacts of hailstorm on urban agriculture in Northern of Maputo City and Matola (Mozambique) - An analysis from a climate change perspective
2022Bernardino Bernardo, Elisa Eda Nhambire, Alice Castigo Binda Freia, Octávio Manuel de Jesus, José Júlio Júnior Guambe, Zacarias Alexandre Ombe, Gustavo Sobrinho Dgedge · Cadernos de Geografia · Mozambique (Maputo)
This mixed-method study analyzed the impacts of hailstorms on urban horticulture in northern Maputo City and Matola, Mozambique, following a storm on June 1, 2021. The study found total and partial destruction of ready-to-cut vegetables, including cabbage, lettuce, and onions, across all production areas. This resulted in heavy financial losses for farmers and a significant increase in vegetable prices in local markets.
Environmental trade-offsClimate changeEconomicsFood sovereignty & justiceThe Contribution of Architectural Design Concepts for Sustainable Urban Farming: The Case of Addis Ababa, Ethiopia
2022Bruk Getahun, Essayas Deribe · Landscape Architecture and Regional Planning · Ethiopia
A case study in Addis Ababa, Ethiopia, assessed the contribution of architectural design concepts for sustainable urban farming in selected urban farms. The research evaluated urban farms using six criteria based on the three pillars of sustainability: ecological, social, and economical. Findings revealed that most urban farms in Addis Ababa did not fully achieve the sustainability criteria.
Urban–rural linkageEconomicsClimate changeCommunityThe urban poor: profile and constraints affecting their participation in allotment gardens
2022Mawuna Donald Houessou, B.G.J.S. Sonneveld, Augustin K. N. Aoudji, Fréjus THOTO, D. J. Snelder, Anselme Adégbidi, Tjard de Cock Buning · Development in Practice · Benin
A survey of 88 urban poor individuals in Benin investigated their profiles and constraints affecting participation in allotment gardens. Findings revealed low educational and income levels, overcrowded and unsanitary housing, and limited access to social services and health facilities among the participants. Furthermore, 76% of them experienced food insecurity, and engaging them in allotment gardens was constrained by requirements for farming skills, financial capital, and safety issues.
Equity & displacementWelfareCommunityEconomicsFood sovereignty & justiceThe invisible crisis: the determinants of local food insecurity in Gauteng municipalities, South Africa
2022Adrino Mazenda, Nonkosazana Molepo, Tinashe Mushayanyama, Saul Ngarava · British Food Journal · South Africa (Gauteng)
This quantitative cross-section study estimated the determinants of household food insecurity in the Gauteng City-Region, South Africa, using binary logistic regression on 13,616 observations from the Gauteng City-Region Observatory Quality of Life 2020/2021 data. The main findings highlight unemployment, health status, education, household size, indigency, and income as the primary determinants of food insecurity. Further studies are needed for an in-depth assessment of household coping mechanisms, the influence of government social grants, and access to credit.
HealthPolicyEconomicsWelfareDeterminants of Micro and Small Enterprise Growth: Three Selected Woreda Cases in Gulachi District, Ethiopia
2022· Journal of Global Economy Business and Finance · Ethiopia
This study aimed to identify major problems associated with the growth and success of Micro and Small Enterprises (MSEs) in the trade, services, manufacturing, construction, and urban agriculture sectors in three selected Woredas (Cheha, Abeshge, and Enmore ena Eaner) in the Gurage zone, Gulachi District, Ethiopia. Both qualitative and quantitative research methods were used, and primary data was collected through questionnaires, unstructured interviews, and personal observations.
Economics‘I lost my job suddenly, but I was prepared’: the significance of urban and peri-urban agriculture in Benin City, Nigeria
2022Emaediong Uko, Tony Binns, Etienne Nel · Agroecology and Sustainable Food Systems · Nigeria (Benin City)
This study investigated the significance of urban and peri-urban agriculture (UPA) in Benin City, Southern Nigeria. Field-based data, collected using qualitative research methods (observation, in-depth interviews, and questionnaire surveys), revealed that in the context of unpredictable and frequent economic shocks, households across all socio-economic levels significantly depend on food production activities. This dependence serves not only for immediate survival but also as a means of reducing household vulnerability and building resilience against future shocks.
EconomicsWelfareFood sovereignty & justiceUrban–rural linkageUnlocking Land for Urban Agriculture: Lessons from Marginalised Areas in Johannesburg, South Africa
2022Doctor S. Nkosi, Thembani Moyo, Innocent Musonda · Land · South Africa (Johannesburg)
This study developed a GIS-based planning support system to identify, quantify, and visualize an index for urban agricultural land in marginalized areas. Using Greater Orange Farm, a marginalized area in the City of Johannesburg, South Africa, as a case study, indigenous knowledge systems were incorporated through the Charrette visioning process for formulating criteria, weights, and rulesets. The results revealed spatial sites ranked by an index where sustainable investment in urban agriculture infrastructure and supporting programs should be targeted.
CommunityPolicyEconomicsHousehold 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 agricultureEconomicsEconomic viability of a small scale low-cost aquaponic system in South Africa
2021· Journal of Applied Aquaculture · South Africa
The study analyzes the economic feasibility of a small-scale, low-cost aquaponic system in South Africa, examining how the fish-to-plant revenue ratio affects viability.
DIYEconomicsPost-harvest losses in rural-urban value chains: Evidence from Ethiopia
2021Minten B., Tamru S., Reardon T. · Food Policy · Ethiopia
Analyses self-reported post-harvest losses across farmers, wholesalers, processors, and retailers along rural-urban value chains for teff and liquid milk in Ethiopia.
Food lossEconomicsContinuity 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 linkageMicro and Small Enterprises in Dire Dawa Administration: Marketing Mix Challenges and Opportunities and Their Implication on Sales Turnover
2021Yalew Mamo · European Journal of Business and Management · Ethiopia (Dire Dawa)
This cross-sectional descriptive study examined marketing challenges and opportunities for 226 micro and small enterprises, including urban agriculture, in Dire Dawa City, Ethiopia. Regression analysis found that product, price, and place significantly affected sales turnover, but promotion had an insignificant effect. Major challenges included a lack of coordination among government offices and insufficient commitment from enterprise owners.
Governance failureEconomicsBuilding a food-resilient city through urban agriculture: The case of Ilorin, Nigeria
2021Akeem Ola · Town and Regional Planning · Nigeria (Ilorin)
This study examined the effects of urban planning practices on urban agriculture (UA) in Ilorin, Nigeria, and its contribution to the city's food shock resilience. Findings revealed that UA contributed 16.9% to meat/fish/egg requirements, 4.5% to yam/cassava/potato, 0.58% to vegetables, 0.6% to fruits, and 0.5% to grain requirements. However, the Respondents’ Agreement Index (RAI) indicated that poor access to finance (0.93), limited land area (0.75), and lack of tenure security (0.44) were dominant variables influencing UA's poor contribution to food security.
Governance failureFood sovereignty & justicePolicyEconomicsCommunityPotential 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 agricultureFeeding the Cities
2021Nancy Karanja, Mary Njenga · · Kenya (Nairobi)
The urban agriculture efforts of Alice Wairimu and her husband Michael Macharia, who migrated to Nairobi, Kenya, are presented. They raised livestock but lost a cow during political unrest and sold the rest for hospital bills. They also attempted wastewater farming on government-owned land, which was repossessed in 2010. Subsequently, they used their meager savings to rent land nearby and continue practicing urban agriculture.
Governance failureCommunityEconomicsFood sovereignty & justiceThe role of urban vegetable production in Jos (Nigeria) as a source of livelihood
2021Solomon Wuyep, Isaac Tebogo Rampedi, AP Ifegbesan · African Journal of Food Agriculture Nutrition and Development · Nigeria (Jos)
This study assessed the role of urban vegetable production as a source of livelihood for 94 small-scale farmers in Jos, Nigeria, by randomly selecting 40% of urban vegetable farmers and using questionnaire-administered interviews with a mixed-method approach. Results indicated that vegetable farming provides 84% part-time and 5% full-time employment opportunities and reduces food insecurity among participants. However, lack of credit facilities, seasonal variations, and high costs of farm inputs and equipment were identified as serious problems, and small-scale urban farming also entailed negative environmental impacts that could undermine long-term sustainability.
EconomicsFood sovereignty & justiceWelfareA Comprehensive Review of Biomethanation of Urban Food Waste in Nairobi City County, Kenya
2021Hope Baxter Chamdimba, Isaiah Omosa, Simon M. Wandera · Journal of Energy Environmental & Chemical Engineering · Kenya (Nairobi)
This review analyzed urban food waste in Nairobi City County, Kenya, which accounts for 64% of recoverable municipal solid waste, totaling 29.4 thousand tons annually. The study found that food waste has a biomethane potential of 508.45 ml CH4 /g VS, suggesting that the city's food waste could yield 10.5 million m3 of methane and 1.38 MW of electricity. While food waste is increasingly used for animal feed and composting, its application for energy recovery via anaerobic digestion is limited by a lack of source separation. Biogas is shown to be more economical than liquefied petroleum gas, but long-term methane generation requires supportive policies.
Food lossOrganic cycleEconomicsWaste to resource: use of water treatment residual for increased maize productivity and micronutrient content
2021Tariro Gwandu, Lynsay I. Blake, Hatirarami Nezomba, Jairos Rurinda, Stephen Chivasa, Florence Mtambanengwe, Karen L. Johnson · Environmental Geochemistry and Health · Sub-Saharan Africa
An eight-week greenhouse experiment in Sub-Saharan Africa evaluated the short-term benefits of applying aluminum-based water treatment residual (Al-WTR) with compost and inorganic phosphorus fertilizer on maize productivity. A co-amendment of 10% Al-WTR and 10% compost significantly increased maize shoot biomass (3.92 ± 0.16 g) compared to the control (1.33 ± 0.17 g). Adding phosphorus fertilizer to this co-amendment further doubled the yield and increased maize uptake of zinc, copper, and manganese.
CompostOrganic cycleEconomics