Research & reports

Roopika Sivaraman, Haritha Thulaseedharan Nair, Sharmila Krishnan, Perumal Siddhuraju · Soil and Sediment Contamination An International Journal · India (Coimbatore)

This study analyzed biocompost and water samples from four agricultural nurseries in semi-urban Coimbatore, India, for microplastic contamination using density separation and ATR-FTIR. While physicochemical properties met Indian standards, microplastic fragments (85%) and fibers (15%) were found in two biocompost samples (BC-B and BC-C), identifying PMMA, PP, and EVA polymers. No microplastics were detected in samples BC-A and BC-D, but the findings suggest semi-urban agricultural gardening may contribute to microplastic accumulation in terrestrial environments, potentially harming soil and plant health.

Juan David Arosemena Polo, Susana Toboso‐Chavero, Biraj Adhikari, Gara Villalba · Waste Management · Spain (Barcelona)

This research determined the potential of organic municipal solid waste (OMSW) compost to supply nitrogen-phosphorus-potassium (NPK) demand for urban agriculture (UA) and its environmental benefits in the Metropolitan Area of Barcelona, Spain. Using spatial material flow analysis and life cycle assessment, it was found that the current waste management system could substitute 8% of total NPK demand with compost, reduce impacts by up to 39%, and yield 130% savings in global warming. A 2025 scenario could substitute 21% of NPK demand and reduce environmental impacts by up to 1,049%.

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.

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.

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.

Avisema Sigit Saputro, Efi Nikmatu Solihah · Jurnal Pengabdian Masyarakat Darma Bakti Teuku Umar · Indonesia

A training session on making polybag planting media was held on June 3, 2023, in Sanggrahan, Central Java, for women from PKK RT 05 RW 18. The activity aimed to teach urban agriculture using polybags to address limited land, enabling residents to grow vegetables and reduce household expenses. Participants learned to create planting media from humus soil, compost, and husk charcoal (1:1:1 ratio) for optimal plant growth.

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.

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.

Géant Basimine Chuma, Jean M. Mondo, Adrien Byamungu Ndeko, Etienne M. Akuzibwe, Espoir Mukengere Bagula, Gustave Nachigera Mushagalusa · Discover Sustainability · Democratic Republic of Congo (Bukavu City)

This study investigated the quantity, composition, and disposal practices of domestic waste in Bukavu City, Eastern D.R. Congo. Findings revealed significant challenges in waste management infrastructure and practices, showing that approximately 5% of waste undergoes composting, while 10% is used as livestock feed, 66% incinerated, and 17% buried. Waste management is primarily handled by children (82%), with very limited involvement from non-governmental organizations.

Dwi Haryanta, Tatuk Tojibatus Sa’adah, Indarwati Indarwati · Jurnal Ilmiah Pertanian · Indonesia (Surabaya)

This study in Surabaya City, Indonesia, used a qualitative descriptive approach to characterize the composting process and compost from recycling centers. Composting materials included household waste, market refuse, and fall foliage, processed in an open aerobic system without bio-activators. Chemical analysis showed C/N ratio (17.10-19.60), C-total (17.65%-18.10%), and N-total (0.95%-1.12%), among other elements. While visually mature, indicators such as C/N ratio and temperature suggested an immature state, rendering the compost unsuitable for immediate planting; storage for a minimum of one month was recommended for maturation.

· Diva portal (Dalarna University Library) · Global

"Compost-o-Scene" is an installation created with the ÖK Allotment Garden, featuring microbe compost developed under Jenny Salmson's guidance and daily care by "Compost Turners." The installation includes Salmson's compost recipe and care instructions, Malin Lobell's microscope photographs and screen-printed workwear, and Janna Holmstedt's video fieldnotes and soundscape, alongside tools and an art publication.

Abila Hena Anayet, Meor Mohammad Hilmi Bin Hamzah, Mohamed Zuhaili Mohamed Najib · Civil and Sustainable Urban Engineering · Global

This study investigated factors affecting compost maturity, specifically temperature, pH, and moisture content, by comparing breakdown rates of eight regulated combinations against an uncontrolled sample. The analysis showed that volume loss over time was critical for determining compost maturity. Combinations with high temperature and varying moisture/pH (High Temp, High Moisture, Low pH; High Temp, Low Moisture, High pH; High Temp, Low Moisture, Low pH) exhibited the most volume loss by day 46, indicating faster maturation than the uncontrolled group.

Wendy J. Heiger-Bernays, Alicia Fraser, Valerie Burns, Kerry Diskin, Diedre Pierotti, Kian Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · Scholarworks (University of Massachusetts Amherst) · United States (Boston)

This study identified the nature and extent of soil contamination by polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) pressure-treated lumber in a representative community garden in Boston. Elevated levels of PAHs and arsenic were present in the gardens studied, with these timbers serving as a continuous source of contaminants. This is the first study to investigate contaminants other than lead and evaluate the effect of adding city compost on select soil contaminants in urban garden soil.

Md. Khalilur Rahman, Md Alauddin, Tamanna Tabassum Turna, Md. Kaisar Rahman · Journal of Biodiversity Conservation and Bioresource Management · Bangladesh

A pot experiment on a Charfasson town rooftop in Bhola, Bangladesh, assessed the effects of inorganic fertilizers and decomposed poultry litter on boro rice growth and yield. Eight treatments with three replications were used, measuring agronomic parameters every 30 days and yield after harvest. Treatment T7 (3.0 t poultry litter ha-1 + N100P25K90 kg ha-1) resulted in the highest plant height (82.67 cm at 90 days), leaf number (37.67 at 120 days), panicle length (27.17 cm), grains per panicle (153.33), rice yield (51.53 g/pot or 5.67 t ha-1), and B:C ratio (4.51). Treatments T7 and T8 showed statistically identical results, with T7 achieving the overall best performance.

Eurika Putri Andita, Renny Nurhasana, Chotib Chotib, Riska Rahma Arriani, Rizqita Oktorini, Safira Salsabila, Teungku Darwis, Dhaneswara N. Indrajoga, Dyah Nawang Ratnasari · MEDIA BINA ILMIAH · Indonesia (Jakarta)

This community engagement program in Lenteng Agung, South Jakarta, aimed to assess and improve public knowledge of urban agriculture among mothers at TPA Ikhlasul Makhfudz Women's School. Activities included planting assistance, training, and educational seminars on urban farming benefits, plant types, and composting. The program demonstrated benefits for daily life, such as improved nutrition, community cohesion, relaxation, and enhanced use of idle land.

Atiqullah Sarwari, Abdieva Guljamal, Abdul-Bari Hejran, Mohammad Hassan Hassand · Bulletin of Toraighyrov University Chemistry & Biology series · Global

This study aimed to accurately measure soil quality parameters through the application of manure compost and bacteria fertilizers or their combination during maize development, in order to establish a quick and effective method for repairing deteriorated farmland soils. The research investigated the dynamic effects on the variety of community structure, basal respiration, and microbial count and biomass in soil.

Bárbara Rios Lacerda, Rafael Sanginez Zebalos Lourenço, Aleffy Helberty Alves da Silva, Ana Cláudia Barroso · Revista Ibero-Americana de Humanidades, Ciências e Educação · Brazil (Porto Velho)

This experience report details the implementation of a sustainable vertical community garden and a composting system at a municipal school in Porto Velho, Rondônia, Brazil, as part of the "Urban and Community Gardens: Cultivating Connections" project. The project aimed to provide food and food education, promote practical skills, environmental awareness, and healthy eating habits for students. Despite difficulties such as finding new locations and shortened deadlines, which limited contact with students and the local community, the project successfully established a sustainable garden for community consumption and environmental education for those involved.

Mutiawati Mandaka, Sharfina Bella Pahleva Wahyono, Tri Susetyo Andadari, Gatoet Wardianto · Manfaat Jurnal Pengabdian Pada Masyarakat Indonesia · Indonesia (Semarang)

An urban farming program was implemented in Pakintelan Village, Gunungpati District, Semarang, Indonesia, to address food security challenges and improve local economic welfare by utilizing limited urban land. This program involved UNPAND KKN students providing training and mentoring in farming techniques, organic pest management, and compost use, aiming to increase community participation in agricultural activities and understanding of sustainable practices. The program successfully increased community participation, maintained environmental sustainability, and contributed to the economy through the potential use of harvests for consumption or sale.

Jaume Vilasís Pamos, Pablo Aránguiz, Stefhania Lozano, Guillermo Palau Salvador · Revista Lecciones Vitales · Spain (Valencia)

This study examines urban agriculture initiatives in Valencia, Spain, which adopt an agroecological approach to promote sustainable practices like composting. While these collective strategies aim for sustainable agricultural models and contribute to food sovereignty, they face significant challenges, particularly regarding access to water. The initiatives also engage in political action and promote equitable organizational models.

Nuri Kartini · Jurnal Abdisci · Indonesia

The Adiwiyata School program, an Indonesian government initiative, encourages schools to implement sustainability and environmental protection principles, focusing on waste management, energy saving, and natural resource use. Schools targeted by the program are very enthusiastic about its phased implementation. Successful implementation requires local government policies, rewards for schools, strong commitment from all stakeholders, and good cooperation and synergy among related parties.

Veena G Sonole, Soumya CB, A Meghana, Mahesh G Shetty · International Journal of Research in Agronomy · Global

This review examines vermicomposting, a process using earthworms to convert organic waste into nutrient-rich compost. Vermicompost benefits horticultural crops, improves soil fertility, and reduces the need for chemical pesticides and fertilizers. Vermitechnology offers solutions for waste management, soil fertility, and sustainable agricultural practices in urban agriculture.