Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Critical findings
133 results(4 / 6)
Characterization of charcoal and firewood ash for use in African peri-urban agriculture
2020Dora Neina, Sibylle Faust, Rainer Georg Joergensen · Chemical and Biological Technologies in Agriculture · Ghana
A study in Ghana investigated the potential agricultural value of charcoal and firewood ashes by examining differences in their chemical and mineralogical compositions and the suitability of various extractants for plant nutrients. Charcoal ash had higher pH, EC, and CCE than firewood ash, while firewood ash contained higher levels of As, Cu, Mg, and Zn, and more Mg-rich minerals. Both ashes contained trace elements, but their bioavailability and plant uptake after field application may differ and may not necessarily lead to plant uptake.
Peri-urban agricultureOrganic cycleCompostPotential of Technosols Created with Urban By-Products for Rooftop Edible Production
2020Baptiste Grard, Nastaran Manouchehri, Christine Aubry, Nathalie Frascaria‐Lacoste, Claire Chenu · International Journal of Environmental Research and Public Health · Global
A five-year experimental trial quantified the food production potential, soil fertility, and potential contamination of Technosols created from urban wastes for rooftop edible production. The cropping system showed promising results for food production and maintained high fertility. However, a concern was identified regarding the trace metal content of certain edible crops, specifically zinc (Zn) and copper (Cu), although most trace metal levels were below existing norms.
Contamination & food safetyDIYCompostOrganic cycleHealthInfluence of different ratio of soil and organic fertilizers on growth and yield of strawberry and marigold for rooftop garden
2020Alak Barman, Swarna Shome · International Journal of Biosciences (IJB) · Bangladesh
An experiment in Gazipur during 2018-19 investigated the effect of six different ratios of soil and organic materials on strawberry and marigold growth and yield for rooftop gardens. Marigold performed best with 1 kg vermicompost for 1 kg soil (T5), while strawberry showed best performance in most parameters under the same treatment. The lowest yield was recorded from 1 kg cowdung for 2 kg soil (T4).
DIYCompostOrganic cycleHeavy Metal Uptake of Lettuce and Ryegrass from Urban Waste Composts
2020Remigio Paradelo, Antía Villada, María Teresa Barral · International Journal of Environmental Research and Public Health · Global
A two-month pot experiment studied heavy metal transference from five metal-rich urban waste composts and a manure vermicompost to lettuce and Italian ryegrass under controlled conditions. Plant concentrations of Zn, Cu, and Cd increased with their concentrations in compost, while no such relation was observed for Pb. The study found that the ratio of element concentration in plant to compost was much higher for Zn, Cd, and Cu than for Pb, indicating lower bioavailability of Pb.
Contamination & food safetyCompostHealthOrganic cycleFertile cities: Nutrient management practices in urban agriculture
2019Wielemaker R., Oenema O., Zeeman G., Weijma J. · Science of the Total Environment, 668:1277-1288 · Global
Drawing on a survey of urban agriculture practitioners in industrialised countries, this study characterises how city-derived resources such as compost, food waste and urine are used as fertiliser and how nutrients are managed. It maps the practices and challenges of cycling urban organic waste back to farmland, systematising on-the-ground approaches that link food-waste composting to urban agriculture.
CompostOrganic cycleFood lossCommunityEffect of the composting process on physicochemical properties and concentration of heavy metals in market waste with additive materials in the Ga West Municipality, Ghana
2019Tibu C., Annang T. Y., Solomon N., Yirenya-Tawiah D. · International Journal of Recycling of Organic Waste in Agriculture · Ga West, Ghana
In Ga West Municipality, Ghana, stack-pile composting of market waste with sawdust, rice straw and swine manure was monitored for temperature, pH, N, P, K and heavy metal concentrations through the composting process.
CompostOrganic cycleImpacts of Urban waste use on Soil Microbial activities in Urban Agriculture
2019Rayim Wendé Alice Nare, Stephania Boua, Rockia Marie Nadege Zerbo, Richard Madege · Research Journal of Science and Technology · Burkina Faso
This study assessed the impact of urban waste application on soil microbial activities in Burkina Faso. Soil amended with urban waste showed significantly higher Soil Induced Respiration (SIR) (0.049 mg C g−1 soil h−1) compared to manure-amended (0.0212 mg C g−1 soil h−1) and control soils (0.0114 mg C g−1 soil h−1). Urban waste amendment also significantly decreased lag time by 50% and maximal response time (Tmax) by 53%, indicating increased microbial biomass and rapid growth of soil microorganisms. The results suggest that adding urban waste to soils is likely to result in carbon sequestration.
Organic cycleCompostBiodiversityMeasuring the Fate of Compost-Derived Phosphorus in Native Soil below Urban Gardens
2019Gaston E. Small, Sara Osborne, Paliza Shrestha, Adam D. Kay · International Journal of Environmental Research and Public Health ·
This study measured phosphorus (P) concentrations in native soil below four- and six-year-old urban garden plots, collecting soil cores from five plots of each age. It found that inorganic weakly exchangeable P was significantly elevated in native soil below garden plots (>35 cm deep) compared to reference profiles, indicating accumulation of excess P from compost. This suggests that while urban agriculture can recycle P, over-application of compost may contribute to soil and water pollution.
Environmental trade-offsCompostOrganic cycleFecal Sludge Derived Products as Fertilizer for Lettuce Cultivation in Urban Agriculture
2019Surendra K. Pradhan, Olufunke Cofie, Josiane Nikiema, Helvi Heinonen‐Tanski · Sustainability · Global
This research determined the fertilizer value of sawdust and fecal sludge (SDFS) pellets and compared their effect on lettuce cultivation with other fertilizers in a greenhouse and open field. SDFS pellets, with or without enrichments, resulted in higher saleable fresh weight lettuce yields than commercial compost, poultry manure, mineral fertilizer, or no fertilizer. Open field cultivation yielded more than greenhouse cultivation. While no helminth eggs were detected, some fecal coliforms were found in lettuces fertilized with almost all tested fertilizers, including NPK and the non-fertilized control.
Contamination & food safetyOrganic cycleHealthCompostEvaluación del uso de enmiendas orgánicas procedentes de residuos urbanos y agropecuarios como técnica de reducción del riesgo en emplazamientos contaminados
2019Ignacio Laorga Fernández · · Global
This study analyzed the "risk reduction" effect of organic amendments from urban and agricultural waste (coffee grounds, domestic compost, livestock manure) on metal-contaminated soils. The method aimed to reduce the bioavailability of metals by increasing soil organic matter, enabling remediation for potential reuse as urban gardens. It was shown that immediate dilution and immobilization of contaminants occur, significantly reducing their mobility and absorption by edible plants.
CompostOrganic cycleUrban–rural linkageThe revival of urban agriculture: an opportunity for the composting stream
2019Marjorie Tendero, C. Guyot · HAL (Le Centre pour la Communication Scientifique Directe) · Global
This article discusses the booming urban composting sector, driven by urban agriculture's new outlets for organic materials. Individual or collective composting offers a decentralized solution with positive impacts on the environment and neighborhood social relations. Its success requires material availability in common spaces, communication systems, support for residents' initiatives, and consideration of technical, ecological, agricultural, economic, and social aspects.
CompostOrganic cycleCommunityEconomicsClimate changeVermicomposting of different organic materials using the epigeic earthworm Eisenia foetida
2018· International Journal of Recycling of Organic Waste in Agriculture · Global
Evaluates the efficiency of the epigeic earthworm Eisenia foetida in vermicomposting different organic substrates, including kitchen waste.
DIYCompostOrganic cycleSUSTRATO BIOFÍSICO PARA AGRICULTURA PROTEGIDA Y URBANA A PARTIR DE COMPOST Y AGREGADOS PROVENIENTES DE LOS RESIDUOS SÓLIDOS URBANOS
2018Universidad Tecnológica Fidel Velázquez, Alfredo Ricardo Pérez Fernández, Mariana Ruiz Morales, Universidad Iberoamericana, María Odette Lobato Calleros, Universidad Iberoamericana, Eloy Pérez Valera, Biosistemas Sustentables, S. A., Promotora de Inversión de Capital Variable, Perla Rodríguez Salinas, Universidad Tecnológica Fidel Velázquez · Revista Internacional de Contaminación Ambiental · Global
This study developed biophysical substrates for protected and urban agriculture by mixing compost from urban solid waste with polystyrene and tepetate. Experimental tests were conducted on roses and tomatoes under four different treatments in a greenhouse, evaluating substrate nutritional properties and productivity. The results indicate that the proposed biophysical substrates possess physical, chemical, and biological properties making them a viable substitute for urban gardening or protected agriculture.
CompostOrganic cycleDIYLa lombriz Roja Californiana (Eisenia foetida) una Aliado en la Agricultura Urbana Sustentable
2018Lisbeth Gallardo, Yelitza Contreras, J. Saavedra Jaramillo, Raúl Ernesto Alban · Cadernos de Agroecologia · Venezuela
This paper investigated the population growth index of the Red Californian Earthworm (Eisenia foetida) to produce solid and liquid humus from urban organic waste. Conducted at the Artisanal Bioisumes Laboratory at the Bolivarian University of Venezuela, the study compared compost and egg shells with coffee waste as substrates. The egg shell and coffee waste substrate yielded better earthworm population growth and humus production.
CompostOrganic cycleDIYCommunityThe fate of compost-derived phosphorus in urban gardens
2018Gaston E. Small, Paliza Shrestha, Adam D. Kay · International Journal of Design & Nature and Ecodynamics · Global
Dissolved phosphorus (PO4 3-) and nitrogen (NO3- & NH4+) losses in leachate from experimental raised-bed garden plots were measured. Plots receiving cow manure compost showed high PO4 3- concentrations (5-11 mg/L), while municipal organics compost plots had concentrations an order of magnitude lower (0.5-1.2 mg/L), and no-compost plots had 0.3 mg/L. Phosphorus lost through leachate and harvest accounted for only 1-10% of total applied phosphorus, indicating soil build-up was the dominant fate. This study illustrates a potential trade-off in urban agriculture between crop production and efficient phosphorus recycling from urban food waste.
Environmental trade-offsCompostOrganic cycleUrban–rural linkageA Handbook for Beginning and Veteran Garden Organizers
2018Renee Raiden Boyer, Ben Chapman · VTechWorks (Virginia Tech) · Global
This handbook outlines recommended agricultural practices for food safety in school and community gardens. Topics include food safety, site selection, pesticides and fertilizers, handwashing, water and irrigation, composting, garden design and animals, sanitation, and tools.
Food educationCommunityCompostOrganic cycleAprovechamiento de los residuos sólidos a través del compostaje en la Escuela Tecnológica ITC
2018Fabiola Mejía, Clara Liliana Montero, Lina Marcela Arango, Emily Johanna Bermúdez · Letras ConCiencia TecnoLógica · Colombia (Bogotá)
At the Escuela Tecnológica Instituto Técnico Central (ETITC) in Bogotá, Colombia, a process for utilizing organic waste through composting was implemented. Following an "Urban Agriculture" workshop, organic waste from the ETITC cafeteria was collected and identified. Different mixtures were created to produce compost, which was then used in seedbeds and for transplanting seedlings. This research aimed to demonstrate the potential of using organic waste for compost production.
CompostFood educationOrganic cycleThe monitoring of soils on the land areas as information support for the register of soil resources at the local level
2018D.V. Belobrova, Д. А. Шаповалов · Dokuchaev Soil Bulletin · Russia
This study conducted large-scale (1:5000) soil mapping of garden non-commercial partnerships in the Meshchera lowland of Noginsk district, Moscow region. Investigations revealed that initial soils underwent significant transformation since their creation, with soddy podzolic and boggy soils changing into agro-soddy podzolic soils and agrozems due to intensive development and fertilizer use. While these changes reflect increased productivity and quality of allotment soils, the transformed soils are characterized by neutral pH and high/medium mobile phosphorus content, but are poor in exchangeable potassium compared to natural soil profiles.
Environmental trade-offsOrganic cycleCompostCommunityRegistro de dos taxa de ácaros (Acari: Mesostigmata, Astigmata) asociados a Milichiidae (Diptera) y Pteromalidae (Hymenoptera) en el estado Falcón, Venezuela | Record of two mite taxa (Acari: Mesostigmata, Astigmata) associated to Milichiidae (Diptera) and Pteromalidae (Hymenoptera) in Falcon state, Venezuela
2018Dalmiro Cazorla-Perfetti, Pedro Morales-Moreno · DOAJ (DOAJ: Directory of Open Access Journals) · Venezuela (Coro)
This paper records the presence of deutonymphs of two mite taxa, Uroobovella Sensu lato Berlesse, 1903 and Cosmoglyphus Oudemans, 1932, in the urban area of Coro, Falcón State, Venezuela. These mites were found attached to the legs and/or abdomen of adult Desmometopa Loew, 1866 and Spalangia Latreille, 1805 specimens. The specimens were collected inside a dwelling, specifically in a plastic container with compost for growing vegetables and on the windows.
CompostDIYBiodiversityDevelopment of organic fertilizers from food market waste and urban gardening by composting in Ecuador
2017Janneth Jara-Samaniego, M.D. Pérez-Murcia, M.A. Bustamante, C. Paredes, A. Pérez‐Espinosa, Irene Gavilanes-Terán, Marga López, Frutos C. Marhuenda‐Egea, H. Brito, R. Moral · PLoS ONE · Ecuador (Chimborazo Region)
This study developed a field-scale demonstration project in Ecuador's Chimborazo Region to evaluate composting technology for managing organic waste from food markets and urban gardening. Three co-composting mixtures were prepared using market waste and pruning materials. All piles showed suitable composting development with significant organic matter decomposition, and the resulting composts lacked phytotoxicity and possessed suitable agronomic properties for use as organic fertilizers.
CompostOrganic cycleDIYAssessing How the Ratio of Barley Mash to Wood Chips in Compost Affects Rates of Microbial Processing and Subsequent Vegetable Yield
2017Gaston E. Small, Brendan Sisombath, Lauren Reuss, Russ Henry, Adam D. Kay · Compost Science & Utilization · Global
The study measured the effects of different barley mash to wood chip ratios on nutrient retention in compost and subsequent vegetable yield. Nine compost piles (1 m3) were constructed with varying ratios, and the 50:50 mixture maintained internal temperatures above 55°C for 30 days. When the finished compost was used in raised-bed garden plots, arugula and tomato yields increased with compost barley mash content, but less than 5% of N and 2% of P were recycled into new vegetable production.
CompostOrganic cycleDIYHydrochars from Biosolids and Urban Wastes as Substitute Materials for Peat
2017María Luisa Álvarez, Gabriel Gascó, César Plaza, Jorge Paz‐Ferreiro, Ana Méndez · Land Degradation and Development · Global
This study compared peat, hydrochars from biosolids (HSL) and urban wastes (HUW), and their 50% volume mixtures with peat, as potential substrates. Ryegrass was grown in these mixtures, and hydrophysical and biochemical properties were analyzed. Treatments with biosolids hydrochar (HSL) and its mixture with peat (PT + HSL) increased ryegrass dry weight production by 184% and 216% respectively, compared to peat.
Organic cycleCompost도시농업용 바이오차 시용이 상추 생육에 미치는 효과
2017이윤숙 · · Global
Urban agriculture has gained emphasis due to its importance for leisure and recreation in modern society. However, public health may not be guaranteed due to continuous odors from animal compost. Biochar is an amendment that can reduce odors and enhance crop productivity, but this abstract is truncated and does not present specific research findings.
Contamination & food safetyCompostHealthOrganic cycleEFFECT OF DIFFERENT VERMICOMPOST RATES AND POT VOLUME ON PRODUCING CELERY AND RED CABBAGE UNDER URBAN HORTICULTURE CONDITIONS
2017S. H. Ahmed, M. Emam, M. Abul-Soud · Zagazig Journal of Agricultural Research · Egypt (Cairo)
This study investigated the effect of different vermicompost rates (10%, 20%, 30%) and pot volumes (4, 6, 8 L) on celery and red cabbage grown under green roof conditions in Cairo, Egypt, during 2014/2015 and 2015/2016. Increasing pot volume from 4 to 8 L increased vegetative growth and yield but decreased economic efficiency. A 20% vermicompost rate increased vegetative and yield characteristics, while 30% had a negative impact. Increasing vermicompost from 10% to 30% increased N, P, and K contents, but increasing pot volume from 4 to 8 L/plant decreased N, P, and K contents.
CompostOrganic cycleClimate changeFood sovereignty & justiceEconomic assessment system towards sustainable composting quality in the developing countries
2016· Clean Technologies and Environmental Policy · Global
Proposes an economic assessment framework aimed at achieving sustainable composting quality in low-cost, small-scale composting contexts in developing countries.
DIYCompostEconomics