Research & reports

Agnieszka Gralińska–Toborek · Journal of AESTHETICS & CULTURE · Global

A discussion piece categorizes guerrilla gardening — the grassroots activity of planting vegetation in public spaces — into four types: gardening, activism, art and farming, each further subdivided into areas such as beautifying urban spaces, promoting social change, providing food, advancing education and building community. It notes that empirical research increasingly points to a discrepancy between the modest practice of gardeners and the more expansive expectations of theorists, symbolized by the movement's use of military terminology, and observes that research on guerrilla gardening lacks in-depth aesthetic reflection.

Andreea Melinescu · Annals of the University of Craiova Series Biology Horticulture Food products processing technology Environmental engineering · Europe

This study focuses on designing a green space in the Old Town of Craiova, Romania. Using 3D landscaping software, a 270 m² area was designed with terraces covered in Wisteria sinensis, green walls, aromatic plants, and fruit trees, applying the Edible City Solutions concept, plus community-oriented elements such as a stage for events. The project is presented as a model for sustainable urban green spaces intended to enhance social interaction and environmental quality.

Regita Fatya Azzahra, Muhammad Iqbal Nurulhaq, Leonard Dharmawan · JURNAL PENYULUHAN PEMBANGUNAN · Indonesia

A qualitative descriptive study with SWOT analysis of millennial farmers in Desa Cipayung, Indonesia, supported by the Ministry of Agriculture's young-farmer program. It aims to identify the potential and problems facing these farmers and to formulate a group-strengthening strategy and farm-development program. The study proposes strategies such as drawing on field agricultural extension officers to optimize use of available land and natural resources, applying best agricultural practices, and directing millennial farmer group members toward microgreens production to meet market demand.

Arta Kusumaningrum, Didik Widiyantono, Uswatun Hasanah, Dyah Panuntun Utami, Istiko Agus Wicaksono, Isna Windani · Surya Abdimas · Indonesia

Describes a community-service (pengabdian) activity introducing the concept of urban farming using limited urban residential space — pots arranged on walls and fences — to a Women Farmer Group (KWT) at Perum Pepabri Borokulon in Purworejo Regency, Indonesia. The activity combined secondary data collection, key-informant interviews, focus group discussion, extension training, implementation of urban farming, and monitoring and evaluation. It reports that urban farming proved suitable for implementation in this urban residential setting and that it could supply food at the household scale and increase household income for members of the women farmer group.

Hanan Zaffar, Jyoti Thakur · Mongabay India · India

Across Indian cities, urban dwellers are turning rooftops, balconies and vacant plots into food gardens, driven by a desire for fresh organic produce as well as hopes of cutting air pollution and easing the urban heat island effect. Farmers in cities such as Ludhiana and Bengaluru are adopting shade nets and drip irrigation to cope with extreme heat, and research in Bengaluru suggests rooftop farming could reduce indoor temperatures by 2-8°C.

Camila Neves Lange, Bruna Moreira Freire, Lucilena Rebelo Monteiro, Marycel Elena Barboza Cotrim, Bruno Lemos Batista · Plants · Brazil (Santo André)

Sixty-four lettuce plants were collected from six urban garden sites in Santo André, Brazil, to measure potentially toxic elements and test household washing. Lead reached 0.77 mg/kg at the Capuava 1 site near an industrial complex, above the 0.1 mg/kg limit, with chromium and arsenic also elevated. Sodium-hypochlorite soaking worked best, removing 48% of lead, 46% of arsenic and 52% of vanadium, while plain water immersion removed about 30% of lead and arsenic and cadmium and chromium fell by under 10%. Total cancer risk for children exceeded acceptable thresholds at some gardens, and the authors conclude washing alone is insufficient and environmental source control is required. Roots were not analysed because gardeners did not want beds damaged.

Alcaldía de Medellín (Secretaría de Inclusión Social y Familia) · Alcaldía de Medellín · Colombia

An article on Medellín's municipal Social Inclusion and Family Secretariat program supporting home gardens for household self-consumption through training workshops, provision of agricultural supplies, and technical visits. The program benefits 670 households, who must attend at least 5 of 7 scheduled educational sessions to receive materials and products.

Kueh Yung Shin K., Tan P.P., Goh Boon Ling M., Chong C.J., Bolhassan N.A. · HardwareX, 16:e00498 · Malaysia

An open-hardware study designing and publishing SMART GROW, a low-cost automated IoT hydroponic system paired with an Android app for small-scale urban farming. It monitors and controls basic parameters such as pH, EC and water level and can be readily replicated, self-built and customised at home. It exemplifies DIY and maker culture in which citizens tackle urban food production with self-built equipment.

· Sustainability · China (Beijing)

Case study of Beijing's Dashilar historic neighborhood analyzing resident-driven small-scale gardening as spontaneous green renewal, an alternative to government-led redevelopment.

· Agriculture · Global

Presents a conceptual design and simulations of a self-assembling, low-cost, fully automatic vertical farm with a small footprint intended to be installed and used by a non-specialist. Cost minimisation is achieved by using one set of resources moved by a robot arm to service the plants.

· Instrumentation Mesure Métrologie · Global

Develops a low-cost, modular vertical farming rig based on a steel cuboid enclosure constructed with sustainable and locally sourced materials. Monitoring and control use a Raspberry Pi with microcontrollers and IoT sensors/actuators for remote automation.

· HardwareX · United Kingdom

Designs and validates MACARONS, a scalable, customisable, open-sourced modular platform for plant care, monitoring, and transportation. It offers per-plant dosing, automated logging of temperature/humidity/images, and Python-programmable behaviours, validated by autonomously caring for five lettuce plants over five weeks under artificial lighting.

· Biomass Conversion and Biorefinery · Global

Examines decentralized in-vessel composting as an efficient technology for managing biodegradable solid waste.

· Agronomy · Global

Investigates the degradation of municipal waste through vermicomposting using a combination of Eisenia fetida and Lumbricus rubellus.

· Journal of Material Cycles and Waste Management · Greece

Life cycle assessment comparing source separation of biowaste, pay-as-you-throw systems and autonomous (decentralized) composting units in the Municipality of Katerini, Greece.

· Frontiers in Sustainable Food Systems · Global

Studies discarded tea waste as a low-cost, sustainable substrate for oyster mushroom cultivation, assessing biological efficiency and nutritional quality. Demonstrates reuse of an agricultural waste stream for cheap mushroom production.

· IoT (MDPI) · Global

Design of a low-cost IoT smart drip irrigation system comprising an ESP32, solenoid valve, and soil-moisture, temperature, humidity and water-flow sensors that automates watering based on sensor readings.

· Journal of Biosystems Engineering · Global

Development of a low-cost plant growth chamber using open-source technology that controls internal temperature, LED lighting and aeroponics with remote operation; the prototype achieved over 600 umol m-2 s-1 PPFD and 21/17 degree C day/night temperatures.

· Agriculture · Bulgaria

An IoT-based small-scale hydroponic system for leafy vegetables was designed using low-cost materials and sensors, enabling remote monitoring and automation of the cultivation process.

Mahmoud M.M., Darwish R.R., Bassiuny A.M. · Journal of Engineering Research · Egypt

An economically oriented smart aquaponic system was developed and implemented, using IoT technology to monitor and control aquaponic operations.

· Sustainability · Arizona, USA

Assesses the feasibility of rooftop rainwater harvesting for food production on the Hualapai Indian Reservation, discussing its potential to alleviate community water stress.

Dorr, E., Hawes, J.K., Goldstein, B., Fargue-Lelièvre, A., Fox-Kämper, R., Specht, K., Fedeńczak, K., Caputo, S., Cohen, N., Poniży, L., Schoen, V., Górecki, T., Newell, J.P., Jean-Soro, L., Grard, B. · Agronomy for Sustainable Development · Global

A citizen-science study collecting data from 72 urban agriculture sites across France, Germany, Poland, the UK and the USA to analyze yields and resource use. Most plots yielded between 0.5 and 2 kg/m².

Andrés G. Rolhauser, J. Scott MacIvor, Adriano N. Roberto, Selena Ahmed, Marney E. Isaac · Ecological Solutions and Evidence · Global

This paper addresses the limited understanding of conditions under which stress-tolerant "nurse" plants can facilitate stress-intolerant "protégé" species on extensive green roofs for urban agriculture. It proposes a framework and linear model, integrating trait–environment theory and facilitation ecology, to make testable predictions on protégé species performance along stress gradients. The framework aims to help researchers assess the feasibility of nurse–protégé interactions under various environmental conditions.

Novianti Indah Putri, Zen Munawar, Rita Komalasari, Iswanto Iswanto, Hernawati Hernawati, Dandun Widhiantoro · Darma Abdi Karya · Indonesia

A prototype digital farming system was developed for farmer groups in Indonesia, based on participatory action research. This system integrates IoT technologies such as Arduino UNO, solar panels, soil moisture sensors, temperature sensors, and automated irrigation. The prototype helps monitor and automate routine processes, enabling farmers to maintain the quality of planting media, which was deemed crucial for easier and more efficient plant growth and development.

Restilou Q. Artiaga · Zenodo (CERN European Organization for Nuclear Research) · Global

This experimental-comparative study investigated the productivity of "Gulayan sa Paaralan" (school garden) using drip irrigation technology. Researchers planted "pinakbet" vegetables in 16m x 16m plots, with and without drip irrigation, and compared yields over two consecutive croppings. Results showed that plots with drip irrigation consistently produced higher yields, demonstrating the technology's effectiveness in improving harvest with minimal staff and student involvement.