Research & reports

Brittany R. Kruger, Joshua Sackett · PLoS ONE · Global

This study assessed abiotic and biotic factors affecting sweet corn production in six arid urban agricultural plots with varying shade levels (n=18 plots). Corn successfully matured in 50% of the plots. Microbial richness and diversity were high and not a hindrance. Corn success metrics positively correlated with average daytime light intensity (r=0.74-0.84) and soil organic matter (r=0.77-0.89), but negatively correlated with soil calcium, magnesium, sodium, and sulfate (r=-0.71 to -0.90).

Bart Neuts, Steven Valcke, Clio Lambrechts, Vincent R. Nijs, Jan Van Praet · · Europe

This study describes a participatory inquiry conducted in the summer of 2021 at St Godelina’s Abbey in Bruges, Belgium, where visitors co-created 4,784 scenarios for the heritage site's future development. A panel of 40 experts further explored these scenarios, leading to an architectural design that integrates a community garden, orchard, and other elements. The process is presented as a best practice for citizen participation in redeveloping cultural sites, though limitations include significant data collection and analysis efforts, making it impractical for smaller initiatives.

Eniandari janabadra.ac.id Eni Andari, Muhammad Najmudin, Titi Laras · ADARMA Jurnal Pengabdian Masyarakat Universitas Janabadra · Indonesia (Yogyakarta)

This study describes a community empowerment program for PKK mothers in RT 36 RW 15, Sorosutan Village, Umbulharjo District, Yogyakarta City, Indonesia. The program utilized urban farming through counseling and training to manage and utilize the home environment. The counseling and training are expected to motivate and educate the mothers to practice organic farming.

Rositayanti Hadisoebroto, Sheilla Megagupita Putri Marendra, Olivia Seanders, Ahmad Rheza, Kendrick Kevin Kabe, Salsabila Azzahra Anjani Indradini · JUARA Jurnal Wahana Abdimas Sejahtera · Indonesia (Jakarta)

In Angke Village, West Jakarta, chicken slaughterhouse wastewater had BOD, COD, and TSS levels exceeding environmental standards. A community service program by Universitas Trisakti aimed to manage this wastewater and empower PKK mothers. The program included training on urban farming using treated wastewater as fertilizer, making biocoagulants from moringa seeds, and using a stirred reactor with biocoagulants to treat wastewater. The stirred reactor, using 100 mL of moringa seed biocoagulant, reduced BOD to 0.34 mg/L and TSS to 0.557 mg/L, but COD remained above the standard at 640 mg/L. The resulting sludge, with COD 320 mg/L and turbidity 475 NTU, can be used as fertilizer for vegetables and ornamental plants.

Thayná da Cruz Ferreira, Gleiciane Rodrigues dos Santos, Alessandra Jackeline Guedes de Moraes, Fernando de Souza Santos, Danielle Pereira Mendonça, Matheus Yan Freitas Silva, Gledson Luiz Salgado de Castro, Telma Fátima Vieira Batista · Revista Brasileira de Engenharia Agrícola e Ambiental · Brazil

This study in Ananindeua, Brazil, evaluated the growth of Acmella oleracea (jambu) under protected and unprotected cultivation systems, applying entomopathogenic fungi (Beauveria bassiana, Metarhizium anisopliae) and the growth promoter Trichoderma asperellum. All three microorganisms promoted jambu growth in both cultivation systems and seasons. Metarhizium anisopliae notably enhanced all growth variables, particularly in protected cultivation during the rainy season, and A. oleracea generally performed better in protected systems across all treatments.

Pierric Calenge, Maie Gérardot · Métropolitiques · United States (Cleveland)

The work by Max Rousseau and Vincent Béal illuminates the ambiguities of a policy that organizes urban decline and racial segregation in Cleveland. This policy promotes urban degrowth and racial segregation, balancing algorithmic management and urban greening. The study focuses on the Rust Belt region, which experiences de-urbanization marked by the subprime crisis, racism, and segregation.

Ayşe Kaplan Sarısaltık, Ufuk Sarısaltık · Cleaner and Responsible Consumption · Turkey

This qualitative study explored the role of ODTÜ Bostan, a community garden at the Middle East Technical University in Turkey, in promoting sustainability education, ecology, and food consumption practices. Operating for ten years, the garden not only enhances participants' sustainability competencies but also serves as an educational laboratory, demonstrating the potential of community gardens to address global challenges like climate change and biodiversity loss. The research employed autoethnography, thematic analysis of eight semi-structured interviews, and content analysis of archival data.

Letícia Pereira Cardoso, Luyane Castro de Sousa, Millena de Oliveira Martins, Sarah Luíza Ribeiro Avelino, Wédila Souza Aires Jácome, Otávio Cabral Neto · Revista Multidisciplinar do Nordeste Mineiro · Brazil (Palmas-Tocantins)

This study focused on biodynamic strategies applied in urban gardens in Palmas-Tocantins, Brazil. In addition to a literature review, practical methods included technical visits and an exclusive interview with a producer-researcher, investigating cultivation methods, organic composting, water efficiency, natural pest control, the use of beneficial fungi, and organic fertilizers. The study aims to contribute to sustainable development and innovation in organic food production in small urban spaces.

Tsegay Kahsay Gebrekidan, Gebremariam Gebrezgabher Gebremedhin, Abraha Kahsay Weldemariam, Meaza Kidane Teferi · Journal of the Air & Waste Management Association · Ethiopia

A systematic review of municipal solid waste management (MSWM) in Ethiopia found a generation rate of 0.38 kg/ca/day, with waste predominantly composed of food waste, ash, dust, sand, and yard waste. Over 85% of this waste is reusable or recyclable, with 73.13% being organic matter. Despite suitability for composting and biogas, challenges include a lack of political will, weak municipal planning, and inadequate infrastructure, resulting in only 31.8% of MSW being legally collected.

Moomtahina Rahman, Md. Alauddin, G. M. Mohsin, Md. Amirul Alam, M. K. Rahman · The Journal of Phytology · Global

An experiment investigated the combined impacts of composted poultry manure (CPM) and inorganic fertilizers on tomato growth and yield under rooftop growing conditions. The experiment used a completely randomized design with eight treatments and three replications. NPK fertilizers alone and CPM combined with NPK fertilizers greatly improved tomato plant growth and fruit yield, with maximum yields (68 t ha-1) and economic benefits achieved with 4 t ha-1 CPM and 100% recommended doses of NPK fertilizers.

Gianluca Di Fiore, Kathrin Specht, Cesare Zanasi, Óscar José Rover · Waste Management & Research The Journal for a Sustainable Circular Economy · Brazil (Florianópolis)

A study in Florianópolis, Brazil, surveyed 206 individuals (102 urban agriculture practitioners, 104 non-practitioners) to analyze the influence of urban agriculture on household organic waste management behaviors. The findings indicate that urban agriculture practitioners are more likely to separate and self-treat organic waste and use compost for gardening, regardless of housing conditions. Housing conditions, however, influenced the use of public facilities for organic waste management.

Umi Kulsum Nur Qomariah, Rohmat Hidayat, Ambar Susanti, Silfi Alfi Ahmidah, Ulan Supartini Fatiha, Sri Wijayanti, Dziqi Jamaludin Ahmad · Jumat Pertanian Jurnal Pengabdian Masyarakat · Indonesia

A community service program in Murukan Village, Indonesia, focused on optimizing dairy farm waste utilization to improve agricultural land quality in an urban farming context. The program provided training on making liquid organic fertilizer (POC) from dairy farm waste. The activity successfully increased the local community's understanding and skills in waste management.

Marycruz Abato Zárate, Noel Reyes Pérez, Miguel Ángel Escalona Aguilar, Doris Guadalupe Castillo Rocha, Reyna Ruth Hernández Pérez · Revista Científica Estelí · Mexico

This qualitative study described a family's experience with urban agriculture and solid waste management in Emiliano Zapata, Veracruz, Mexico, through an open interview with a four-member family. The experience, spanning from 2001, included solid waste separation, composting, vermicomposting, rainwater harvesting (24 m3/year), and cultivating over 40 species of medicinal plants. The study found that urban gardens offer multidimensional benefits, including biodiversity protection, biocultural memory preservation, and spaces for learning and social participation.

María Amparo Gaona Flores, Martín Videla, Gerardo Serra, Luis Narmona, Jorge Gabriel Barbero, Milene Rocío Barcenilla, Evangelina Beatriz Argüello · Agroecology and Sustainable Food Systems · Argentina

This study evaluated botanical insecticides as a technological device for synthetic input substitution in peri-urban horticultural systems of central Argentina. A Participatory Action Research (PAR) framework was used to assess the performance of garlic extracts (GE) for pest and natural enemy regulation in lettuce crops in conventional and agroecological contexts. Through three PAR cycles, GE effectiveness on aphids, thrips, and natural enemies was observed, and context-specific adaptations were noted: GE was useful near harvest in conventional systems and highlighted biodiversity's relevance for system redesign in agroecological systems.

Josue Bejarano Chumacero, Manuel Horacio Jiménez Huamán · AGRO - ECOLÓGICA · Bolivia

This study reviewed 16 research papers on urban agriculture conducted at the Aranjuez Occupational Therapy Farm in Sucre, Bolivia, between 2016 and 2020. The review focused on agroecological practices in horticulture (37%), cereals and forages (31%), fruit growing (19%), and livestock production and soil improvement (13%). Findings indicate these practices contribute to local food security and sustainable agroecological approaches, with harvested products used by the therapy center itself. The study also highlighted both advances and limitations in adopting sustainable agricultural technologies in urban and peri-urban settings.

Iqbal Rifa’i Berutu, Soraya Masthura Hassan, Dela Andriani · Jurnal Syntax Fusion · Indonesia (Lhokseumawe City)

This abstract discusses how buildings significantly contribute to global warming and environmental degradation throughout their life cycle. It highlights issues such as environmentally unfriendly material selection, energy-inefficient designs, carbon emissions during construction, and habitat damage. The abstract concludes that a more sustainable approach in architecture and construction is necessary to mitigate these negative impacts.

Nicole E. Rafferty, Christopher T. Cosma · Journal of Ecology · Global

A literature search on nature-based solutions (NBS), including urban greenspaces and agriculture, found that 0%–3% of papers considered pollinators or pollination, with 12.5% in agricultural NBS papers. The study emphasizes that NBS success depends on resilient pollinator communities and calls for identifying keystone plants and pollinators to promote NBS functioning under future climatic conditions. It advocates for phylogenetic trait-based analyses to understand keystoneness.

Aashna Sinha, Kailash Bisht, Digvijay Singh · · Global

This article explores vertical hydroponic farming, noting its benefits like reduced space and water use, and enhanced robustness with Plant Growth-Promoting Microorganisms (PGPMs). However, it also demonstrated that the system's ecological impact is significantly affected by growing media, pots, electricity use, and transportation. The study suggests potential for reducing greenhouse gas emissions and abiotic resource decline by using fiber as growing medium and paper containers.

Miles P.A. Bate-Weldon, Jill L. Edmondson, Katie J. Field · iScience · Global

This study investigated the effect of urban environmentally relevant concentrations of zinc in soils on nutrient exchange between arbuscular mycorrhizal fungi and pea plants using radio-isotope tracing. It found that at higher zinc concentrations, the transfer of phosphorus from fungi to plants and carbon from plants to fungi dramatically decreased. The results suggest that while urban horticulture has potential for food production, the unchecked presence of contaminants like zinc in urban soils may critically hinder its realization.

Anna Ternell, Bosse Lagerqvist, Anders M. Nilsson, Mauricio Sagastuy Klie, Martin Berg, Martin Andre-Bae Pedersen, Maciej Lasocki, Márta Kreidlmayer, Csaba Oláh, Zoltán Szekér, Sándor Némethy · Ecocycles · Global

This study investigated the integration of ecosystem-centred urban planning and multifunctional land use into landscape conservation strategies to foster sustainable and resilient urban environments. A mixed-methods approach combined a comprehensive literature review, case study analysis from various European cities, and the development of a conceptual framework and a novel urban metabolism model. The results demonstrated how urban agriculture and ecosystem-centred planning can be effectively utilized to enhance landscape conservation and urban sustainability.

Muniya Naik M, Chandra Mohan K, K Janardhana, C. Aruna, Rama Mohan M, R. Uday Kiran · International Journal of Biological and Environmental Investigations · Global

This paper investigates the production, economics, and sustainability of vermicompost, an organic fertilizer made by vermicomposting organic waste with earthworms. Vermicomposting is presented as a sustainable waste management and organic agriculture option that can be economically profitable, depending on consumer awareness, distribution, and production scale. It contributes to sustainability by reducing landfill waste and promoting soil health.

Delphine Manka’abusi, Nongma Armel Zongo, Désiré Jean‐Pascal Lompo, Christoph Steiner, Bernd Marschner, Andreas Buerkert · European Journal of Agronomy · Burkina Faso (Ouagadougou)

This four-year study in Ouagadougou, Burkina Faso, investigated the medium-term effects of repeated biochar, ECOSAN, and inorganic fertilization on urban vegetable production. Repeated biochar application at 20 t ha−1 increased soil organic carbon (SOC) by 51% under farmers' practice, while mineral fertilization alone decreased SOC by 32% and caused soil acidification. Biochar increased cabbage yield by 32% four years after application but had no effect on amaranth, and repeated application only benefited the first crop after reapplication.

· Middle East Journal of Applied Sciences · Egypt (Giza)

An experiment in Giza, Egypt, during 2021/2022 and 2022/2023, evaluated celery growth and production in different substrate systems (pot vs. shallow beds) and planting densities (15, 18, 21 plants/m2). Celery grown in pots showed higher values for plant height, leaf number, root weights, head weight, and total yield per m2. For planting density, 15 plants/m2 resulted in the highest plant height, leaf number, root weights, and head weight, while 18 plants/m2 yielded a higher total yield per m2.

Katarzyna Chojnacka, Barbara Widera, Marcel Macarulla, Anastasios Drougkas, Andreu Balastegui, Els Van de moortel, Cansu Iraz Seyrek Şık, Kajetan Sadowski, Joana Fernandes, Ricardo Gomes, Paulo Ferrão · Clean Technologies and Environmental Policy · Global

This study aimed to present interdisciplinary insights on vertical green systems (VGS) design in hot climate zones. Based on an in-depth study of green façade performance in hot climates, methods from various scientific fields were identified that, when combined, effectively protect plants from excessive solar radiation. The main finding was the identification of the most effective combination of methods supporting healthy VGS growth, including façade orientation correlated with appropriate plant selection, shading strategies like passive and kinetic shields, and organic fertilizers supporting plant resilience.

Diana Krabbendam, Emiel Wolf, Bernie Deekens, Rosalie Bak, Hans Krikke · SpringerBriefs in applied sciences and technology · Netherlands (Amsterdam)

This chapter outlined activities for citizen-led projects in the Wildeman neighborhood in Amsterdam. The main challenges identified were a lack of trust and community feeling among inhabitants, a lack of involvement and ownership in neighborhood developments, and fragmented existing community activities and services.