Research & reports

Takashi Watanabe, Makoto Yokohari, Ryuto Matsuzawa · Journal of the City Planning Institute of Japan · Japan (Tokyo)

This study clarified farmers' responses to agricultural activities involving urban residents in Tokyo. The findings showed that over half of the farmers engaged in agricultural activities in cooperation with urban residents, and those enthusiastic about such activities tended to excel in farm management. Furthermore, municipalities within the target area were categorized into three types based on the proportion of farmers conducting agricultural activities with urban residents.

Hasan Belevi, Bettina Baumgartner · International Journal of Environmental Technology and Management · Global

This paper provides a systematic overview of urban agriculture in low and middle-income countries, identifying research needs. It highlights the importance of cross-cutting issues between urban agriculture and environmental sanitation, including excreta, wastewater, and solid waste management. Further research is needed to quantify the benefits, risks, opportunities, and constraints of urban agriculture, as well as its impact on food quality and the environment when reusing waste.

Innocent Nhapi, Huub J. Gijzen, Maarten A. Siebel · Water Science & Technology · Zimbabwe (Harare)

This study aimed to formulate an integrated wastewater management model for Harare, Zimbabwe, integrating resource recovery and reuse in urban agriculture. Harare was divided into five major operational areas, and specific options were considered to suit land use, development constraints, and socio-economic status within the overall criteria of limiting nutrient inflows into Lake Chivero. Flexible and differential solutions were developed in relation to the built environment, population density, user composition, ownership, future environmental demands, and technical, environmental, hygienic, social, and organizational factors.

Steven A. Esray · Water Science & Technology · Global

This paper argues that ecological sanitation should be understood as a closed-loop approach to human excreta management, rather than merely an alternative toilet. With urban populations in Africa and Asia expected to double in the next 25 years, ecological sanitation can facilitate urban agriculture and avoid adverse environmental impacts of conventional treatment. This approach can significantly contribute to food security and public health in a sustainable future.

E. Makumbelo, L. Lukoki, Sj. Paulus, J., N. Luyindula · DOAJ (DOAJ: Directory of Open Access Journals) · Democratic Republic of Congo (Kinshasa)

A survey conducted in 201 plots within the Limete commune of Kinshasa, Democratic Republic of Congo, inventoried nineteen cultivated vegetable species and 764 plants from 18 fruit-tree species. Mangifera indica was identified as the most planted tree species, while Ipomoae batatas was the most frequently cultivated vegetable species.

Adriana Maria de Aquino · · Cuba

This study analyzes the geographical scope and organizational structure of urban agriculture in Cuba. It identifies organic matter as one of the key bases for urban agriculture and describes modalities for producing fresh vegetables and condiments.

L.M. van den Berg · WIT transactions on ecology and the environment · Africa, Asia

Urban agriculture, despite severe competition for space, plays roles such as fresh food supply, leisure, supplementary income for the urban poor, and green space management. Case studies in Africa and Southeast Asia demonstrate the difficulty of maintaining these roles due to public health and environmental degradation concerns. Urban agricultural producers may rely on polluted streams for irrigation, cause soil erosion through inappropriate farming techniques, or poison surrounding residents with pesticides. The paper suggests that urban agriculture could be more beneficial to the urban system if treated by town planners as a normal urban function requiring both regulation and protection.

Chen You · Forestry Science and Technology · China (Kunming)

This paper investigated the harm caused by important pests and endangered hosts on garden plants in Kunming communities, China. It identified that the low level of pest and disease control is due to an unsound forecast system, an unreasonable management system, and a shortage of knowledge among working personnel. Corresponding countermeasures proposed include establishing a sound forecast system, changing the current management system, and improving the knowledge of working personnel.

I. Sandoval, Marco López, M. Stefanova, B. Bernal, Mario Oswaldo Siles Neyra, Daniela Rodríguez García, F. Rodríguez · · Cuba

This study identified major fungal species causing damping-off in tomato seedlings in Cuba, with Rhizoctonia solani present in 50% of samples, Phytophthora parasitica in 41%, and Pythium aphanidermatum in 8.3%. Seed treatment with the antagonist Trichoderma harzianum (strain A34) increased germination to 100% in Floradel, Lignon, Placero, Criollo, and Campbell-28 varieties, compared to 70-80% in untreated ones. This treatment also increased seedling weight and fruit size, and for the Placero variety, it resulted in over 50% higher harvest, yielding a profit of $560.12.

Haney D. H. · Journal of Architectural Education, 54(3), 149-157 · Germany

Examines Migge's designs for Weimar-era Siedlungen of small flats and row houses with adjacent garden plots, arguing that landscape was central to competing visions of interwar modernity and that productive gardens were integral to modern housing.

E. Mensah, Philip Amoah, Pay Drechsel, Robert Clement Abaidoo · CABI Publishing eBooks · Sub-Saharan Africa

This work, presented as case studies from Accra and Kumasi, addresses environmental concerns of urban and peri-urban agriculture. It focuses on waste composting for urban and peri-urban agriculture, aiming to close the rural-urban nutrient cycle in Sub-Saharan Africa.

E. Mensah, Philip Amoah, Robert Clement Abaidoo, Pay Drechsel · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Ghana

This document presents case studies on environmental concerns related to urban and peri-urban vegetable production in Kumasi and Accra, Ghana. It is part of a larger work on waste composting for urban and peri-urban agriculture in Sub-Saharan Africa.

I. Etuah-Jackson, W. P. Klaassen, J. A. Awuye · CABI Publishing eBooks · Ghana (Accra)

This paper reports on solid waste management in Accra, Ghana, examining the experiences of two compost plants, Teshie-Nungua and Ashiedu Keteke (AKCPP), with urban waste composting. It also describes the urban farming systems in Accra and identifies current and potential users of the produced compost.

E. Pena, M. V. Carrion · · Cuba

Four experiments were conducted at INIFAT experimental plots on organoponicos (horticulture on organic substrates) in Cuban urban agriculture. The study investigated substrate preparation methods, sources and proportions, fertility maintenance with organic fertilizers, and earthworm inoculation. Key findings indicated that substrates should be mixed homogeneously, and many crops showed better yields with 75% Cachaza mixtures. Decreases in nutrient and organic matter content led to a gradual decline in yield, while earthworm humus application and direct inoculation maintained fertility and increased yields.

Jens Færge, Jakob Magid, F.W.T. Penning de Vries · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Sub-Saharan Africa

This 2001 entry from CGSpace references a publication titled "Waste composting for urban and peri-urban agriculture: closing the rural-urban nutrient cycle in Sub-Saharan Africa." The publication, edited by Drechsel and Kunze, focuses on waste composting to manage nutrient flows between rural and urban areas in Sub-Saharan Africa.

Nercy Rodríguez de la Rosa, Raimundo M. Díaz Esquivel, Lissett Gutiérrez Hernández, Susana Pérez Talavera, Francisco M. Pérez Tabares · Alimentaria · Global

This study aimed to establish a methodology for using solar dryers for food and seed preservation under rustic conditions. It was established that condiments and seeds can be dried in approximately 3 days, maintaining their qualities and offering additional sanitary advantages. The manufacturing of solar dryers is very simple and does not require large investments.

Raúl Ortíz, Celia Patricia Vera, Antonio Leyva · DOAJ (DOAJ: Directory of Open Access Journals) · Cuba

A diagnostic study was conducted on the conditions of urban gardens, their producers, and families in 20 gardens across five localities in the "Boyeros" and "Arroyo Naranjo" municipalities of Havana, Cuba, between December 1998 and March 1999. While the garden agroecosystems showed satisfactory biodiversity, general knowledge of biological technologies in sustainable urban agriculture remained relatively low. None of the surveyed plot owners consciously knew or used vermiculture, pisciculture, biofertilizers, biopesticides, or biostimulants, and almost half did not consciously use crop rotation.

Waweru Mutambi, Mwangi Kariuki, Kibet Nderitu · Zenodo (CERN European Organization for Nuclear Research) · Kenya

This longitudinal study evaluated the effects of agroforestry practices (integrated tree-crop systems) on yield gains and farmer adoption rates in the Kibera slums of Nairobi, Kenya, using surveys and soil analysis as quantitative data collection methods. Preliminary findings indicate that integrated tree-crop systems produced a statistically significant 12% increase in maize yields (95% CI: 6-18%) compared to conventional farming practices. Farmer adoption rates rose from 40% at baseline to 70% after one year of intervention.

Pay Drechsel, D. Kunze · CABI Publishing eBooks · Sub-Saharan Africa

A chapter in Drechsel and Kunze (Eds.), 'Waste Composting for Urban and Peri-Urban Agriculture: Closing the Rural-Urban Nutrient Cycle in Sub-Saharan Africa' (CABI Publishing; IWMI; FAO), addressing research and development priorities. The abstract provides no further detail beyond this citation.

National Park Service, City of Fresno · U.S. National Park Service · United States

The Fresno Sanitary Landfill (FSL) opened in 1937 and closed in 1987, and is described as the oldest 'true' sanitary landfill in the United States and the oldest compartmentalized municipal landfill in the western U.S. Under engineer Jean L. Vincenz, it was the first landfill to use the trench method and compaction, and became a model for modern sanitary landfills nationwide.

Thomas Nelson · PubMed · Global

This paper discusses the global pattern of nutrient transfer from rural to urban areas, which diminishes cropland vitality and creates a dilemma for feeding urban populations. Urban farming is presented as an approach to support food needs and contribute to municipal waste management. Governments in countries like the US, Germany, the Netherlands, and Canada are recognizing local food production as a component of food security.

智 藤田, Satoshi FUJITA · Institutional Repositories DataBase (IRDB) · Japan

At Keisen Women's College farm in Japan, the potential of using Low-Input Sustainable Horticulture (LISH) and vegetable gardening as environmental education materials was investigated over 15 years, starting in 1984. The study found that 16 different vegetable varieties could be grown organically, but cucumbers, other fruit/vegetables, and Cruciferae were virtually impossible to grow organically. However, damage could be reduced for some varieties through specific cultivation methods, and the vegetable garden was found to maintain beauty even in cold seasons and provide a suitable hands-on learning experience for environment and food.

Fiona Nunan · · India (Hubli-Dharwad)

Urban agriculture in Hubli-Dharwad, India, is characterized by tradition and links with rural areas. The majority of urban agricultural activities in India involve keeping livestock, particularly in urban dairies, rather than vegetable growing by low-income communities. Urban and peri-urban agricultural activities in India are strongly associated with urban-based sources of waste, both in terms of consuming waste and producing dung.

Kevin W. King, J. C. Balogh · Transactions of the ASAE · Global

This study developed a first-order decay equation to model the nitrogen release rate of sulfur-coated ureas (SCUs), prevalent in urban agricultural management. The model was fit with reasonable accuracy for both surface (Efficiency R²=0.63) and incorporated (Efficiency R²=0.70) applications. Temperature and seven-day dissolution were determined as best descriptive parameters for the surface model, while soil moisture and temperature were used for the incorporated model. Each model was validated with a limited amount of data, showing prediction efficiencies of 0.82 for surface and 0.63 for subsurface applications.

Drangert Jo · PubMed · Global

Motivated by concerns over water and food scarcity and the health threats posed by faecal pollution and malnutrition, this paper discusses the development of a no-mix excreta disposal system that separates urine and faeces. It argues that ecological sanitation systems open up new, constructive sanitation options, particularly in poor peri-urban areas. The purpose of the no-mix system is described as saving water, reducing wastewater treatment problems, protecting groundwater quality, and recirculating nutrients from urine, and the paper addresses these aspects comprehensively.