Research & reports

Gunilla Ström, Agnes Andersson Djurfeldt, Sofia Boqvist, Ann Albihn, Sorn Sokerya, Sokun San, Holl Davun, Ulf Magnusson · PLOS ONE · Cambodia (Phnom Penh)

A cross-sectional survey of 204 pig-keeping households (from 267 initially identified) in urban and peri-urban Phnom Penh, Cambodia, using structured questionnaires in November–December 2014 and February 2015. Typical holdings were 5–15 pigs, all households kept pigs for sale, and more than 60% reported pig income as one of the household's main sources of revenue. The constraints named most often were low prices for slaughter pigs (54%), expensive feed (53%) and disease outbreaks (50%), with lower-socioeconomic-status households significantly more affected by disease (P=0.025). Notably, no household raised food-safety or zoonotic-transmission concerns, despite these being the standard international worry about urban livestock keeping.

Roger Attwater, Chris Derry · Water · Australia

This paper presents a case study in Western Sydney, Australia, examining the role of water recycling for agricultural use within the peri-urban water cycle. It identifies and discusses aspects that enhance resilience, such as water resource security, avoidance of wastewater discharges, enhanced landscape ecology, and provision of ecosystem services. The study also considers environmental risk management, local agricultural products, social values, livelihood opportunities, and the industrial ecology of recycled organics.

Janneth 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.

Quintana Piñeros, Jacqueline Lisette · · Colombia (Bogota)

This proposal is based on studying the climatological behavior of the main Bogota River basin and its vegetation characteristics to identify suitable native species for urban agriculture. It also proposes a rainwater harvesting system design for hard surfaces, specifically the laboratory building terrace at El Porvenir citadel of Universidad Distrital Francisco José de Caldas. The system would comprise storage, transport, and filtration systems, culminating in a drip irrigation system.

Gaston 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.

Mariana Barbosa de Souza, Ana Claudia Guske · COLÓQUIO - Revista do Desenvolvimento Regional · Global

This study aimed to discuss the concept of urban agriculture from the perspectives of agroecology and organic agriculture. A theoretical review of key concepts such as urban and peri-urban agriculture, agroecology, and organic agriculture, along with an exploratory study, were conducted. Through a bibliographic and documentary survey, the research explored the possibility of urban agriculture, when associated with agroecology and organic agriculture, contributing to regional development.

Amadou Diallo Alpha, Bibbal Delphine, Tall Lô Fatou, Mbengue Mbaye, Moustapha Sarr Mohamed, Diouf Moussa, Sambe Yacine, Kérourédan Monique, Alambédji Rianatou, Yaya Thiongane, Éric Oswald, Brugère Hubert · African Journal of Microbiology Research · Senegal (Dakar)

This study in Dakar, Senegal, detected and characterized pathogenic and antibiotic-resistant Escherichia coli from slaughterhouse wastewater and municipal wastewater treatment plant (WWTP) effluents. Researchers screened 268 E. coli isolates from the slaughterhouse and 272 from the WWTP for genetic markers, and 40 isolates from each site for antimicrobial resistance. While pathogenic and resistant E. coli were found in raw slaughterhouse wastewater, the final treated water from the WWTP, used for urban gardening, did not contain E. coli, indicating low sanitation risks after treatment.

Hosham S. Yousif, El-Syed I. Gaber, Goma A. Bakeer, Abbas E. Rahma, Fathi G. EL-Ebabi · مجلة الدراسات الأفريقية · Sudan (Khartoum)

Sprinkler irrigation has been gaining popularity in Sudan since the mid-1990s, primarily adopted in urban and peri-urban farming in Khartoum state for fodder and vegetable production. The method is mainly used due to its high efficiency and flexibility in applying small depths of water. Water conservation, particularly for farmers using groundwater for irrigation, is another motive for its spread.

María 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.

이윤숙 · · 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.

S. 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.

Shirin Yajam, Mohammad Taghi Alebrahim, Roghaye Majd, Mehrdad Sabouhi · · Global

A study examining the role and benefits of urban agriculture was conducted based on library resources, documents, and evidence of successful examples in other countries. It was shown that urban agriculture can play an important role in increasing food security, improving nutrition, reducing poverty, developing local economies, creating jobs, and recycling municipal waste. The study concluded that urban agriculture can be considered an appropriate solution for sustainable urban development in environmental issues and for improving food security and safety.

Edina Vadovics, Matthew Hayes · · Hungary

A case study of the Open Garden Foundation, a local organic producer-consumer network in Hungary, was conducted. The foundation developed within a Central Eastern European socioeconomic context not supportive of radical solutions for the agricultural sector and rural communities. The study focused on the development of organic agriculture in Hungary, food consumption trends, opportunities for purchasing local organic products, and people's awareness of organic products. The Open Garden's management transitioned from the not-for-profit to the for-profit sector, while the main actors remained consistent.

Rattan Lal · · Global

This chapter describes the nature, properties, restoration, and sustainable management of urban soils to enhance food security and environmental quality. It notes that urban ecosystems are rapidly expanding and changing, with urban soils often classified as Anthropic soils. Drastic human-induced disturbances to urban soils hinder ecosystem functions, but restoration strategies aim to create novel soil types that improve vegetative production, denature pollutants, reduce salinization, and strengthen biogeochemical and biogeophysical cycling.

Eileen Bogweh Nchanji, Imogen Bellwood‐Howard, Nikolaus Schareika, Takemore Chagomoka, Johannes Schlesinger, D. Rodríguez Torres Axel, Glaser Rüdiger · International Journal of Agricultural Sustainability · Ghana (Tamale)

An ethnographic study in Tamale, Northern Ghana, assessed the sustainability of urban vegetable production between 2008 and 2014. While urbanization increased cultivation of profitable vegetables like cabbage, the practice involved irrigation with grey and wastewater and high pesticide use, posing health and environmental hazards. Industrial growth reduced open space urban agriculture by 8.7%, leading farmers to use interstitial spaces and peri-urban fringes, indicating a dynamic but not yet sustainable production system.

Avanthi Deshani Igalavithana, Sang Soo Lee, Nabeel Khan Niazi, Young Han Lee, Kye Hoon Kim, Jeong‐Hun Park, Deok Hyun Moon, Yong Sik Ok · Sustainability ·

This study evaluated urban agriculture soil quality through microbial assessment, comparing soils that had received either organic or inorganic fertilizer for 10 years. It measured soil enzyme activities, dehydrogenase, beta-glucosidase, arylsulfatase, urease, and alkaline and acid phosphatases, as indicators of microbial-mediated function, and used fatty acid methyl ester analysis to characterize microbial community composition. Organically fertilized soils showed relatively higher microbial community richness and enzyme activity than inorganically fertilized soils, with principal component analysis explaining organic fertilizer's positive influence on the microbial community, leading the study to conclude organic fertilizer can be a better alternative than inorganic fertilizer for long-term urban agriculture soil health and safety.

Yong Hyun Kim, Moo Ryong Huh, Jeong Ho Lee, Young Sik Lee, Hye Sung Choi · Journal of people, plants, and environment · Global

This study examined effluent water from biofloc technology (BFT) inland aquaculture as a resource-recycling substitute for conventional chemical fertilizer in urban agriculture, using cherry tomato cultivation. Tomato seedlings transplanted into nutrient-free horticultural soil were grown for 8 weeks under five treatments: control, hyponex solution (HS), slow-released fertilizer (SF), daily effluent water (DE), and weekly effluent water (WE). Growth characteristics differed significantly among treatments except for root length: plant length ranked HS=WE greater than DE=SF greater than control, and stem diameter ranked DE=SF greater than WE=HS greater than control, with no significant difference between HS and WE in shoot length/diameter or between DE and SF; leaf number was significantly higher in HS, DE and WE than in SF and control. Fruit sugar content showed no significant difference among treatments except the control, but fruit weight and yield were significantly higher in HS and WE than in DE and SF. The study concludes that the use of effluent water is comparable to conventional chemical fertilizer for urban agricultural cultivation.

Silvia Rodríguez Navarro, Juan Esteban Barranco Florido, Victor Hugo Marín Cruz, Roberto Alejandro Terrón Sierra · Sociedades Rurales, Producción y Medio Ambiente · Global

To identify control alternatives for Macrodactylus pests in urban agriculture zones, this study evaluated the biopesticide action of enzymatic extracts from the entomopathogenic fungi Beauveria bassiana, Isaria fumosorosea, and Metarhizium anisopliae against Macrodactylus infuscatus, an insect of economic importance. The fermentative extracts showed chitinolytic and proteolytic activity that degraded the insect cuticle and caused mortality. After 12 days, survival was lowest with I. fumosorosea extract (20%), followed by B. bassiana (25%) and M. anisopliae (38%), versus 48% in the control. With transformed data, I. fumosorosea again showed the lowest survival (10%), followed by B. bassiana (18%) and M. anisopliae with the highest survival (31%) (p 0.0026). Mean time to death was shortest for I. fumosorosea (5 days), followed by B. bassiana (7 days) and M. anisopliae (9.5 days), all significantly different from the control (p 0.05). This is described as the first study applying these biological control agents to M. infuscatus; treated insects showed decreased food consumption and mobility, apparently due to fungal metabolite effects.

Piroska Nagy · Repository of the Academy's Library (Library of the Hungarian Academy of Sciences) · Global

This study provides an overview of the development, geographical emergence, and key values of Community Supported Agriculture (CSA) globally and in Hungary, using secondary research methods. The roots of CSA trace back to Rudolf Steiner's ideas in the 1920s, forming the basis for CSA movements in Germany, Switzerland, and the Americas. In contrast, the French AMAP and Hungarian CSA are based on the teikei communities that emerged in the 1970s. Both models were found to be motivated by consumers' desire for access to healthy food, with consumers initiating their establishment.

GOMGNIMBOU Alain P. K., COULIBALY Kalifa, SANON Abdramane, BACYE Bernard, Hassan NM, Sedogo P. Michel · Zenodo (CERN European Organization for Nuclear Research) · Burkina Faso

This study aimed to chemically characterize organic fertilizers used in urban agriculture in Bobo-Dioulasso, Burkina Faso. For this purpose, seven animal-based fertilizers were analyzed.

Runrid Fox-Kämper · · Global

This book provides insights and examples of how urban space is negotiated, describing urban gardens as "lived places" where social relations, meanings, and a sense of place are developed. To trigger social benefits, it is essential that these sites fulfill more functions than just food growing and leisure. Horticultural practices, such as using pesticides or fertilizers, have a strong influence on the ecological impact of urban gardening; although awareness among gardeners has increased due to training programs in recent decades, this impact persists.

Gundula Proksch · · Global

This chapter discusses urban agriculture as a holistic approach to nutrient resource management in cities, aiming to reestablish closed-loop systems for nutrient recycling. It provides knowledge on aligning plant nutrient needs with efficient growing systems and recycling strategies like composting and anaerobic digestion. The chapter also illustrates the potential integration of these systems into building designs and their impact on building performance.

Lorena Meneses Medina · Universitas Científica · Colombia

An urban children's garden was created between July and December 2015 at the Fundación Hogar el Divino Niño (FHDN) in Colombia, which feeds approximately 100 vulnerable children daily. Led by Nelson Enrique Casas Leal, the project aimed to build an organic farm with the support of children and youth interested in urban agriculture production practices. The garden cultivated tomatoes, peppers, cucumbers, lettuce, cilantro, squash, oregano, thyme, and medicinal plants, and became a life and survival option for the participating children and their families.

Godswill Azinwie Asongwe, Bernard Palmer Kfuban Yerima · Greener Journal of Soil Science and Plant Nutrition · Cameroon (Bamenda)

This study analyzed heavy metal levels (chromium, manganese, lead, cadmium) in 21 urban and peri-urban agricultural wetland soil samples in Bamenda municipality, Cameroon. Average concentrations were 35.73 mg/kg for chromium, 0.08 mg/kg for manganese, 30.64 mg/kg for lead, and 0.45 mg/kg for cadmium. These concentrations were generally lower than the maximum WHO permissible levels.

Douglas Roberto Bizari, Jean Carlos Cardoso · Horticultura Brasileira · Global

This article discusses the potential of using recycled water from treated domestic sewage in urban horticulture as a solution to escalating clean water shortages. While cultural and sanitary impediments exist for large-scale use, and knowledge of treatments is limited, a safe alternative is irrigation for non-edible species like those in floriculture and landscaping. This approach can combine environmental protection with agricultural productivity, support local development, create jobs, and aid environmental protection.