Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
455 results(11 / 19)
Effect 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 cycleMethodology to Identify and Assess Agroecological Practices in Metropolitan Areas. Case Study, Concepción, Chile
2019Montserrat Delpino-Chamy, María Arquero de Alarcón, Sandra Calduch Fernández, José R. Soto · International Journal of Design & Nature and Ecodynamics · Chile (Concepción)
This research focused on developing and applying a methodology to identify and assess agroecological practices in the metropolitan area of Concepción, Chile. A methodology based on production forms, sociopolitical organization, and metropolitan sustainability was proposed. Strengths identified include their location in rururban interstices and small scale, contributing to metropolitan sustainability. However, weaknesses include a lack of appropriate planning policies and regulations, threatening their existence under urban development pressures.
Food sovereignty & justiceCommunityOrganic cyclePolicyImpacts 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 cycleCompostBiodiversityDirect and indirect effects of urban gardening on aboveground and belowground diversity influencing soil multifunctionality
2019Simon Tresch, David Frey, Renée‐Claire Le Bayon, Paul Mäder, Bernhard Stehle, Andreas Fließbach, Marco Moretti · Scientific Reports · Switzerland (Zurich)
A study in 85 urban gardens across Zurich, Switzerland, investigated the impact of gardening on five soil functions and the relationship between plant (600 spp.) and soil fauna (18 earthworm spp., 39 springtail spp.). High plant diversity positively affected soil fauna and multifunctionality, but intense garden management decreased plant diversity. This indicates a trade-off where intensive gardening, while potentially beneficial for some aspects, can negatively impact overall plant diversity.
Environmental trade-offsBiodiversityOrganic cycleCommunityMeasuring 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 cycleThe potential for heavy metal pollution in crops from urban and peri urban horticultural farms in the Gaborone environs: a review
2019L.C. Obuseng · Botswana Journal of Agriculture and Applied Sciences · Botswana (Gaborone)
This review highlights the potential for heavy metal accumulation in soil and crops from urban and peri-urban agriculture (UPA) around Gaborone, Botswana, due to the intensive use of chemical fertilizers, pesticides, wastewater, sludges, and industrial effluents. A literature review showed that fertilizers contain heavy metals, and the use of treated or untreated sewage water by UPA farmers can lead to heavy metal accumulation in soil and crops, posing a danger to human health. Information on heavy metal accumulation in soils is limited in Botswana, despite high agrochemical use in UPA vegetable production.
Contamination & food safetyHealthPeri-urban agricultureOrganic cycleAsesoría para la conformación de una fundación de agricultura urbana
2019Wendy Johanna Murcia Gulumá, Óscar Andrés Pérez Soler, Sindy Rodríguez Rodríguez · · Colombia (Bogotá)
This study provided advisory support to an urban garden in Bogotá, Colombia, named "Guerreros y Guerreras Unidos en Accion," which had been operating empirically since 2005 without formal legal status or strategic planning. The garden, primarily involving individuals over 50 without formal employment, sought to formalize its activities by establishing a foundation. The intervention aimed to guide the garden's members through the legal and administrative steps for formalization.
Governance failureCommunityWelfareOrganic cyclePolicyUsing decomposition of household items as an indicator of soil health and educational tool in Kamuli District, Uganda
2019Theresa Brehm · Iowa State University Digital Repository (Iowa State University) · Uganda
This study, conducted at Naluwoli Primary School garden in Kamuli district, Uganda, tested the decomposition of household items as an inexpensive indicator of soil health. Cotton underwear, green and rooibos teas, and birch wood sticks were buried for 4, 7, 14, and 21 days in hand-tilled and untilled soils. Untilled soils decomposed cotton by 0.68% less and birch wood sticks by 0.86% more per day than hand-tilled soils, while tea data was inconclusive due to outside biological factors.
Food educationOrganic cycleCommunityEl aporte de la permacultura en el desarrollo de la agricultura urbana
2019Rafael Bújanos Muñíz · · Global
This essay explores the intersection of permaculture principles and their potential application in urban agriculture. Permaculture, originating from the work of Bill Mollison, David Holmgren, and Masanobu Fukuoka in the 1970s, is a system for designing and implementing general principles for organic food production in urban settings. It is based on natural ecosystem patterns and ethical principles, including soil, forest, and water conservation, self-care, and equitable distribution of goods with reasonable consumption limits.
Organic cycleCommunityPolicyEconomicsFood sovereignty & justiceFecal 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 cycleHealthCompostAlternativas bioorgánicas de nutrición en el cultivo de la zanahoria (Daucus carota var. sativa) en un huerto intensivo
2019Pedro López Labarta, José Luis Montejo Viamontes, Yacelis Cárdenas García, Dimeri Piñeiro Esquivel, Diosmaris de la Caridad Vasallo Cristia, Amaury Rondón Aquilar · DOAJ (DOAJ: Directory of Open Access Journals) · Cuba
This research, conducted in the Ernesto Che Guevara intensive orchard in Esmeralda municipality, Cuba, from December 2016 to March 2017, compared different bioorganic nutrition alternatives and their influence on growth and yield indicators in carrot cultivation. Using a completely randomized experimental design with five treatments and three repetitions, plant height, root length, and yield were evaluated. Fortified liquid humus and liquid humus enriched with boron, calcium, and zinc yielded the best agronomic indicators and the greatest economic benefits compared to natural liquid humus and the control.
Organic cycleDIYFood sovereignty & justiceSustainable agriculture in organic wheat (Triticum Aestivum L.) growing in ARID region
2019N.S. Al-Ghumaiz · International Journal of Design & Nature and Ecodynamics · Saudi Arabia
This study assessed agronomic characteristics of eight bread wheat genotypes grown organically on low fertility soil in Saudi Arabia's arid Qassim region during the 2010 and 2011 growing seasons. Experiments compared conventional and organic farming systems at two locations, measuring chlorophyll content, flag leaf area, and harvest index. Findings showed differences between farming systems, with specific genotypes like YR and E-line identified as potentially suitable for sustainable organic wheat production in arid regions.
Organic cycleClimate changeEvaluación 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 linkageExploring the Environmental Performance of Urban Symbiosis for Vertical Hydroponic Farming
2019Michael Martin, Sofia Poulikidou, Elvira Molin · Sustainability · Global
This study used life cycle assessment (LCA) to evaluate the environmental performance of using urban residual material flows in vertical hydroponic farming. It assessed replacing conventional growing media with paper, compost, and brewers’ spent grains, and conventional fertilizers with biogas digestate. The results indicate significant environmental performance benefits when conventional growing media are replaced, and substantial potential benefits, though less significant, when fertilizers from residual urban streams are used, suggesting potential for more circular hydroponic systems.
Organic cycleClimate changeEconomicsDigital agricultureUrban Farming Using Upcycling Technique of Brassica rapa L. Cv (Pechay Tagalog) in Ermita, Manila, Philippines
2019Alma E. Nacua · Modern Concepts & Developments in Agronomy · Philippines (Manila)
This paper aimed to observe Pechay stem growth in loam soil planted in recycled fruit Styrofoam boxes and to upcycle Pechay stems in Ermita, Manila, Philippines, also observing signs of infection. An experimental design method was used, with Pechay seeds grown in the same container type with loam soil as a control. Out of 180 Pechay stems planted, 128 survived, showing a 71% survival growth rate. Pechay grown from seeds had a 98% survival rate.
DIYFood lossOrganic cycleThe 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 changeDiseño de un modelo de agricultura urbana para el desarrollo de huertos familiares
2019Cindy Carolina Ortiz Franco, kleber Bajaña Avarado · · Ecuador
A study was conducted in the Atahualpa parish, Santa Elena province, Ecuador, on the design of an urban agriculture model for family garden development. The investigation was carried out through documentary research, comprising stages of diagnosis via surveys and interviews with council managers, approach, theoretical proposal based on survey results, methodological procedure, analysis, and conclusions on project viability. The diagnosis determined that farmers are interested in participating in the implementation of the urban agriculture proposal designed for the Atahualpa parish to improve food security and nutrition in families.
DIYFood sovereignty & justiceEconomicsOrganic cycleINTERACTIVE EFFECT OF NITROGEN AND PHOSPHORUS ON GROWTH AND YIE LD OF HYBRID CAPSICUM (Capsicum annuum L.) IN ROOF TOP GARDEN
2019Md. Khalid Mahmud, Md. Forhad Hossain, Sk Monirul Islam, Asraf Ali, Md. Taslim Hossain · Big Data In Agriculture · Bangladesh (Dhaka)
An experiment conducted in Dhaka, Bangladesh, from October 2017 to March 2018, investigated the interactive effects of nitrogen and phosphorus on hybrid capsicum growth and yield in a rooftop garden. Three nitrogen levels (0, 100, 130 kg N ha-1) and three phosphorus levels (0, 50, 80 kg P2O5 ha-1) were applied. The combination of 130 kg N ha-1 and 80 kg P2O5 ha-1 significantly increased plant height, fruit diameter, fruit length, and fruit yield, suggesting optimal fertilizer application for enhanced growth and yield.
DIYOrganic cycleEl cubio como una alternativa productiva sostenible en condiciones de agricultura urbana de Bogotá
2019Santiago Manuel Sáenz Torres, Alfredo López, Lena Prieto, Tulio Rodríguez · Equidad y Desarrollo · Colombia (Bogotá)
The production potential of cubio (Tropaeolum tuberosum), an Andean native root vegetable, was investigated under urban agricultural conditions in Bogotá. Cubio was found to be highly nutritious, exhibit good performance under adverse edaphoclimatic conditions, show tolerance to pests and diseases, and yield excellent quality and productivity. Production was higher with organic fertilization compared to conventional chemical fertilizers.
DIYOrganic cycleEconomicsEfeito de três bioestimulantes no comportamento morfológico e produtivo da cultura do rabanete (Raphanus sativus L.)
2019Alexander Calero Hurtado, Yanery Pérez Díaz, Kolima Peña Calzada, Elieni Quintero Rodríguez, Dilier Olivera Viciedo · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Cuba (Sancti Spíritus)
An experiment in Sancti Spíritus, Cuba, from February to April 2016, evaluated the effect of three bio-stimulants (ME-50, vermicomposting humus lixiviate, Biobras-16) on radish crops, with 45 plants observed per treatment. The bio-stimulants positively affected radish production, increasing average leaf production per plant, root diameter, biomass production, and yields to over 1.05 kg.m-2. Specifically, the ME-50 treatment reduced the percentage of damaged tuberous roots by 50% compared to the control.
DIYOrganic cycleEnvironmental Impact of Exceptional Quality Biosolids Use in Urban Agriculture
2019Odiney Alvarez‐Campos, Gregory K. Evanylo · Journal of Environmental Quality · Global
The impacts of exceptional quality (EQ) biosolids and inorganic fertilizer applied for rehabilitating anthropogenic soils on potential nitrogen (N) and phosphorus (P) water quality impairment risk were compared. After two years, reclamation rates of biosolids resulted in soil P saturation ratios greater than the recommended 30% but lower than the 65% limit. While nitrate N (NO3–N) posed the greatest nutrient leaching risk, lysimeter-collected mass loading of NO3–N from reclamation rates was not greater than for the inorganic fertilizer.
Environmental trade-offsOrganic cycleHealthClimate changeBiodiversityWould a sustainable city be self-sufficient in food production?
2019Gaston E. Small, Robert McDougall, Geneviève S. Metson · International Journal of Design & Nature and Ecodynamics · Global
This study analyzes the potential benefits and costs of urban agriculture, comparing tradeoffs in different sustainability metrics. It assesses how optimal urban agriculture varies by context, such as maximizing production in dense areas versus filling vacant land in post-industrial cities. The research also examines urban agriculture's role in making food systems resilient and includes a case study comparing resource use and pollution for lettuce production via outdoor urban agriculture, indoor urban agriculture, conventional methods, and cross-continental transport for one U.S. metropolitan area.
Climate changeEconomicsOrganic cycleFood sovereignty & justiceCropping Practices and Their Drivers in Various Cropping Systems in Peri-urban Areas of Ouagadougou, Burkina Faso
2019Delphine Bernadette Ouédraogo, Delwendé Innocent Kiba, Zacharia Gnankambary, Sheick K. Sangaré, Diakouba Sirima, Hassan Bismarck Nacro, Michel Papaoba Sédogo · Journal of Agricultural Science · Burkina Faso (Ouagadougou)
This study investigated cropping practices and their drivers in 133 peri-urban farms near Ouagadougou, Burkina Faso. Soil sample analysis revealed that monoculture led to low soil organic carbon, while polyculture led to low soil available potassium. The socio-economic conditions of the farms explained up to 60% of the variability in cropping practices.
Environmental trade-offsPeri-urban agricultureEconomicsOrganic cycleFood sovereignty & justiceEffect of infaq and takmil wal istikmal in sustaining community vegetable farming in Malaysia
2019Suhaimi Mhd. Sarif · The International Islamic University Malaysia Repository (The International Islamic University Malaysia) · Malaysia
This study investigated the effect of infaq (charitable contribution) and takmil wal istikmal (complementarity) on sustaining community vegetable farming in Malaysia. Personal interviews with selected farmers, CSA administrators, and agricultural regulators revealed that the effect of infaq and takmil wal istikmal is limited to small-scale community farming.
CommunityOrganic cycleEconomicsDiversity of arboreal species in scenarios of urban agriculture in the municipality of Pinar del Río
2019Lisandra Hernández Guanche, Yoerlandy Santana Baños, Armando Acosta Hernández, Armando del Busto Concepción · DOAJ (DOAJ: Directory of Open Access Journals) · Cuba (Pinar del Río)
This research determined the diversity of arboreal species associated with the "Vial Colón" organoponics system in Pinar del Río municipality, Cuba. Inventories identified 37 arboreal species from 26 botanical families. Fabaceae was the most represented family, with Persea americana Mill. and Moringa oleifera Lam. showing the highest abundance.
BiodiversityCommunityOrganic cycle