Research & reports

Khadezatul Kubra, Md. Rofekuggaman, Md. Habibullah Siddiki, Rebeka Sultana, Jakaria Chowdhury Onik, Md. Abubakar Siddik · Plant Science Archives · Global

A study at the rooftop garden of Habiganj Agricultural University, Bangladesh, examined the effect of combining alternate wetting and drying (AWD) irrigation with plant growth regulators (PGR, specifically gibberellin) on the growth of Gimakalmi (Ipomoea aquatica) during the Boro season (January-June 2024), in silt loam soil (pH 6.14, 2.25% organic matter, 0.12% total nitrogen). A randomized complete block design with four treatments and three replications compared a control (T0), 100% recommended fertilizer dose plus PGR (T1), PGR plus AWD (T2), and 100% recommended fertilizer dose plus PGR plus AWD (T3). At 21 days after sowing, leaf number was 3.83 in the control versus 7.50 in T3, and yield at the first harvest (21 days after sowing) was 5.68 t/ha in the control versus 11.51 t/ha in T3, with T3 consistently showing the highest leaf number, plant height and yield across all three harvests.

Shu Hua Teoh, Gwo Rong Wong, Purabi Mazumdar · Innovations in Agriculture · Global

A review combining scientific literature analysis and interviews with urban farmers examined urban farming models including community, indoor, rooftop and vertical farms using techniques such as aeroponics, hydroponics and aquaponics. It found that sustainability and yield remain major challenges to fully realizing urban farming's potential, identifying limited land and water resources, pest and disease incidence, financial constraints on setup and maintenance, knowledge and skill gaps among participants, and a lack of effective collaboration between universities, government and industry as the key barriers.

Mika Saarenpää, Marja I. Roslund, Noora Nurminen, Riikka Puhakka, Laura Kummola, Olli H. Laitinen, Heikki Hyöty, Aki Sinkkonen · Environment International · Global

A one-month randomized, placebo-controlled, double-blind trial had volunteers grow edible plants indoors during winter, when natural exposure to environmental microbiota is low, comparing a microbially diverse growing medium against a visually similar but microbially poor placebo medium. Skin microbiota and seven immune markers were measured at baseline and after one month. The diversity of five bacterial phyla (Bacteroidetes, Planctomycetes, Proteobacteria, Cyanobacteria, Verrucomicrobia) and one class (Bacteroidia) increased on participants' skin in the intervention group, with no change in the placebo group, and the number of nodes and edges in skin-bacteria co-occurrence networks increased roughly three times more in the intervention group. Plasma interleukin-10 rose in the intervention group relative to placebo, with a similar trend for interleukin-17A and the IL-10:IL-17A ratio, while satisfaction and adherence were high in both groups.

Mélanie Douziech, Stefan Mann, Stefan Galley, Jens Lansche · Agronomy for Sustainable Development · Global

Urban agriculture is often associated with sustainable practices, but the diversity of systems classified as urban agriculture and limited information on their sustainability call that link into question. Drawing on 91 scientific papers, a study proposes a holistic classification of urban agricultural systems combining technical, social and economic characteristics, with economic production intensity and the intensity of cooperation among actors as key axes. One end of the scheme covers ground-based, open, socially motivated systems with high cooperation and low production intensity; the other end covers building-integrated, quasi-closed systems with high production intensity. Mapping sustainability claims from the literature onto the scheme associated "urban farming" with job creation, food safety, water savings and higher yields, and "urban gardening" with educational potential, biodiversity improvements and lower yields.

Jagarlamudi Nethra, B. Srinivasulu, Vadada Vinay Kumar, C. Lakshmana Rao · International Journal of Environment and Climate Change · Global

This review surveys nutrient-rich microgreens with emphasis on their role in urban agriculture, covering nutritional composition, culinary applications and cultivation techniques through an agronomy, nutrition and urban-planning lens, without presenting specific experimental data or figures.

Nafisah Awang, Suhana Saad, Sarmila Md Sum · International Journal of Academic Research in Business and Social Sciences · Malaysia

A discussion of Malaysia's government Urban Agriculture Program, which promotes farming on unused spaces such as rooftops and empty lots, including rooftop gardens, community gardens, vertical farming and hydroponics, against a backdrop in which 76% of Malaysia's population lives in cities and faces difficulty accessing affordable, nutritious food. It describes support for urban farmers from the Department of Agriculture (DOA) and the Malaysian Agricultural Research and Development Institute (MARDI), and states that urban agriculture provides improved food access, income generation, social interaction and community empowerment, arguing that participation, knowledge sharing and skills development drive economic empowerment.

Seng Boon Lim, Nur Wildaniah Syafiqah Mohd Razib, Imam Mukhlis, Na’asah Nasrudin, Isnen Fitri · PLANNING MALAYSIA · Malaysia

A mixed-methods single-case study evaluating early intervention in community gardening/urban farming initiatives under the Special Area Action Plan Section 13 urban regeneration project in Petaling Jaya City, Malaysia. The quantitative component analyzed 200 questionnaire samples using descriptive statistics, while the qualitative component thematically analyzed 8 interviews. Findings show respondents were skeptical about awareness, safety infrastructure and support services, caretaking, and land ownership concerns surrounding the proposed community gardening at the Sungai Penchala monsoon drain area. The study recommends that authorities plan more awareness-intervention campaigns, strengthen safety infrastructure design, provide policy support for appointing caretakers, and resolve land acquisition issues when revitalizing leftover urban public spaces.

Joanne Dolley, Michael Howes · Australian Planner · Australia

Drawing on interviews with participants across several types of community gardens in Australia, this paper examines how community gardens can contribute to UN Sustainable Development Goal (SDG) 11 Target 7, providing universal access to safe, inclusive and accessible green and public spaces. Applying a broader definition of "inclusive" than the target currently suggests, it finds that community gardens improve the inclusivity and activation of public spaces through their design features, governance, and community involvement, contributing to Target 11.7. Community involvement in design and governance, secure land tenure, well-chosen locations, and sufficient resourcing were identified as factors improving gardens' ability to meet the target. Developing additional indicators to measure progress toward the target is identified as an area for further research.

Jessica Ann Diehl · · Global

This chapter investigates urban agriculture in Singapore through a political ecology lens, examining food security from the perspective of traditional commercial farmers. Growing urban food demand and risks inherent in reliance on the global food system have spurred city governments to implement diversified strategies for integrating urban agriculture at different scales; Singapore, a high-earning city-state that imports 90% of its food, has set a target of raising domestic food production to 30% under its Singapore Green Plan 2030 "30 by 30" Grow Local target. The chapter questions whether this level of food independence is achievable if food production shifts away from traditional farming toward high-tech operations such as rooftop or vertical farms. Semi-structured qualitative interviews covered four topics: general farm practices, social networks, benefits and barriers, and livelihood alternatives. Findings were examined in the context of a rising generation of high-tech entrepreneurial farmers facing the challenge of meeting consumer demand against land and labor scarcity. The in-depth case study demonstrates that technology is only one driver, among many, of the sustainability of the local food system in Singapore, and traditional commercial farmers face pressure on their livelihoods as policy shifts toward high-tech production.

Assyifa Fauzia, Evi Frimawaty, Hadi Susilo Arifin · Holistic Journal of Tropical Agriculture Sciences · Global

This literature review examines the role of urban agriculture as an ecosystem services provider in mitigating urban environmental deterioration. It states that urban agriculture adds various functions across different landscape scales and can provide numerous benefits when managed correctly. The review method compiled literature on urban agriculture and ecosystem services across provisioning, regulating, and cultural service categories. Results describe urban agriculture as taking diverse forms, from private gardens to community plots, addressing limited public funding and promoting greening initiatives; it is described as contributing to biodiversity conservation and to regulating the urban microclimate, including reduced urban heat island effects, wind protection, and pollutant absorption. It is also described as adding aesthetic value to urban spaces, promoting cultural integration, and functioning as a multifaceted strategy for sustainable urban development addressing food security, resilience, and well-being. Amid challenges including threats to urban biodiversity and the need for proper green-space management, the review frames urban agriculture as a holistic approach contributing to cities' visual, cultural, and environmental fabric.

J.A. Veraart, Cora van Oosten, Vincent Linderhof, Confidence Duku, Wilfred Appelman, A.M.E. Groot, Marjolein Sterk, Ilse Voskamp · International Journal of Water Governance · Global

With water-related problems from climate change threatening the future of food systems in both the Netherlands and Ghana, this comparative case study analyzed rainwater harvesting and wastewater reuse in the Rhine-Scheldt Estuaries (Netherlands) and the Bono East Region (Ghana). The analysis focused on identifying similarities in how experts and stakeholders use spatial information to remove barriers to, or foster enablers of, the uptake of nature-based solutions (NbS) in view of climate change. Both rainwater harvesting and wastewater treatment techniques were found to be available and ready for adoption by farmers and the food processing industry, but their uptake was hampered by multiple barriers ranging from biophysical and technical to social and institutional. Spatial information was concluded to be a potential enabler for NbS adoption if applicable to a wide range of possible solutions for water scarcity in food production, though both case studies showed difficulty making the future spatially explicit, and in both cases the effect on biodiversity of, respectively, effluent water reuse and rainwater harvesting did not play a direct role in stakeholder dialogue.

Assyifa Fauzia · Trend and Future of Agribusiness · Global

A descriptive literature review (2015-2023) and comparative analysis of urban farming management in Thailand's Bangkok Metropolitan Region (BMR) and Indonesia's Jakarta. Since 2010 the BMR has pursued food self-sufficiency using canals for irrigation and transport, but urban farmers remain poorly connected to traditional markets. In Jakarta, high population density and conversion of agricultural land are serious problems; after the 1998 economic crisis residents expanded urban farming on available land, but industrialization has increased uncertainty over land rights. Both countries share a lack of coordination in urban agriculture regulation and infrastructure, which the paper suggests addressing through better communication among farmers, retailers and non-farming households.

Beata Sirowy, Deni Ruggeri · ˜The œGeojournal library · Global

An editors' introductory chapter to a book on urban agriculture research, situating the volume's thematic scope. The editors argue that, to achieve the greatest impact, opportunities to engage in urban cultivation should be widely accessible to all segments of the urban population and close to where people live. Because land in dense inner-city areas is scarce and costly worldwide, integrating urban agriculture into existing and planned public spaces is presented as the most feasible strategy for achieving this. The book aims to provide theoretical and practical insights on integrating urban agriculture into public space development, covering well-being impacts, design, organization, educational contexts, and urban planning.

Godwin K. Naazie, Isaac Agyemang, Anthony Mwinilanaa Tampah-Naah · Heliyon · Ghana

A quantitative survey of 362 urban households across diverse neighborhoods in Ghana used descriptive statistics, chi-square tests, and binary regression to examine socioeconomic factors behind urban agriculture participation under climate stress. Household size and income were significant at the 0.05 level, middle- and high-income households participated more than lower-income ones, and land was acquired mainly through purchase, which the study identified as a barrier to participation.

Francesco Orsini, Giuseppina Pennisi, Giorgio Gianquinto, Michael Martin · International Journal of Vegetable Science · Global

This paper argues that widely publicized figures on urban agriculture's environmental impacts lack the methodologically sound evidence needed for valid comparison, before conclusions can be drawn. It addresses problems in comparatively assessing environmental performance between rural and urban farming and argues for the need for specifically designed indicators capable of comprehensively assessing multifunctional urban agriculture.

Jennifer C. Franco, Saturnino M. Borras · Oxford University Press eBooks · Global

This chapter examines the dominant convention in critical agrarian studies and agrarian movements — that land struggles are best captured by an agrarian-reform framework of expropriating land from large private monopolies for redistribution to landless and near-landless working classes. It argues that while this type of struggle remains important, it does not fully capture the range of land struggles of working people across rural and urban, agricultural and nonagricultural spaces. Over recent decades the working classes have fragmented, as the numbers of people combining agricultural/nonagricultural and rural/urban livelihoods have vastly expanded, decentering working people's land struggles from the classical treatment tied to agriculture and capitalism. Land struggles today are dispersed and multisited, with political leadership and power that are polycentric rather than unified, and span multiple scales.

Suhardi Suhardi, Bambang Marhaenanto, Bayu Taruna Widjaja Putra · Pertanika journal of science & technology · Malaysia

Aimed at making urban water-resource management more efficient, this Malaysian study applied and evaluated a soil-moisture-sensor and IoT-based drip irrigation system for urban agriculture. The results showed fair distribution uniformity, with a Coefficient of Uniformity (CU) of 90.15% and 86.58% respectively. An IoT-assisted drip irrigation system that used a Deep Neural Network (DNN) model to meet water requirements produced higher peanut yields than a control irrigation system based on soil moisture alone.

M. S. (Mahmudova) Abdusattorovna · Neliti · Global

An article (Neliti, 2024) states that research examined how road, roadside, and building construction occurred at large scale as a result of the construction of cultural and recreational parks, landscape design, and public parks during the Timurid period. The abstract provides no further detail on data, methods, or specific findings.

Héctor Ávila Sánchez · Investigaciones Geográficas Boletín del Instituto de Geografía · Global

This conceptual article examines periurbanization as one of the most dynamic territorial expressions in contemporary society, discussing the reconfiguration of food-production spaces in peri-urban areas that form part of metropolitan systems as a social and territorial process. It addresses proximity, the consolidation of short supply circuits, and new territorial forms such as city-region food systems and "agrarian parks" (parques agrarios) — a form found mainly in Europe that the article frames as a territorial innovation countering the disarticulation of peri-urban agrarian space under growing metropolization. It discusses the spread of cooperative-based forms (food hubs, cooperative supermarkets, shared workshops) and the roles of social movements, producer organizations, and public institutions in shaping peri-urban territorial governance, framed through solidarity economy and social justice.

Iman Mamnoon · GeoFocus Revista Internacional de Ciencia y Tecnología de la Información Geográfica · Global

Using a GIS-based risk assessment methodology, this study develops a quantitative food-insecurity scale for the most vulnerable urban populations, calculating risk as a combination of social vulnerability and hazard (difficulty of access to food distribution), and applying the model to two case studies: southeast Washington, D.C., in the United States and Puente de Vallecas in Madrid, Spain. A Social Vulnerability Index was computed from average income, education level, unemployment rate, and age, while hazard values were derived from proximity to supermarkets. The analysis identified high-risk food-insecurity areas in both neighborhoods requiring urgent intervention measures. In Puente de Vallecas, census tract 07913143 was identified as a high-risk hotspot with a Social Vulnerability Index of 1.646495 (range 0.901–3.223) and a risk value of 3 (range 3–10); in southeast D.C., tracts 7601 and 7605 were selected as high-risk zones for further study, with Social Vulnerability Index values of 2.221 and 1.737 (range 1.040–3.525) and risk values of 2 and 5 (range 0–10), respectively. The study also identifies a general shortage of areas combining residential and commercial use and limits on public transport availability in the food-insecure urban areas studied.

Górna, Ada · · Global

A book examines the position of urban agriculture within the spatial and functional structure of cities in the Global South through case studies of three cities: Havana, Singapore and Kigali. Drawing on fieldwork conducted in each city, it documents the diverse characteristics of urban agriculture across differing socio-economic, spatial, political and environmental conditions and identifies constraints on its development.

Haochen Zhao, James T. O’Connor, Sarah Zou, Zakaria M. Solaiman, Bede S. Mickan, Nanthi Bolan · Soil Use and Management · Australia

At six community gardens across three soil mapping units — calcareous deep sands, coloured sand and pale sands — in the Perth metropolitan area, Australia, soil samples were compared between cultivated raised beds and adjacent bare ground used as a control. Raised-bed soils showed lower bulk density, higher pH buffering capacity, more available nitrogen, phosphorus and potassium, greater cation exchange capacity, total carbon and microbial biomass than surrounding urban soil, and were estimated to have accumulated 0.55 kg of carbon per square meter (5.5 t/ha) in the top 10 cm, with no significant heavy metal contamination detected in any of the garden soils. The improved soil health and carbon storage were attributed mainly to regular application of compost produced within the gardens.

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.

Annamaria Gentile, Luca Di Stasio, Gianmaria Oliva, Giovanni Vigliottá, Angela Cicatelli, Francesco Guarino, Werther Guidi Nissim, Massimo Labra, Stefano Castiglione · Environmental Research · Global

A review examines the dynamics of antibiotic resistance (AR) in urban soils, cataloguing multiple sources that introduce antibiotics into urban soil, including domestic wastewater, industrial effluent and urban agricultural practices, as well as microplastics and domestic animal excrement. It states that the selective pressure from these anthropogenic sources promotes the proliferation of antibiotic-resistant bacteria through horizontal gene transfer among soil microorganisms, poses a significant public health threat by potentially transferring resistance genes to human pathogens via direct contact, food consumption and water ingestion, and disrupts microbial community dynamics in ways that affect soil fertility, plant growth and overall environmental quality.

Madison Powers · · Global

This chapter surveys the food-security implications of agricultural land use, unsustainable features of widespread food production practices, and the debate over agricultural intensification versus extensification, then examines land use's consequences beyond the land itself for groundwater, surface water, oceans, ambient air quality, and planetary systems. It explains the causes of forest destruction and fragmentation driven by the global expansion of land used for "high-risk commodities," the linkage between deforestation and declining terrestrial biodiversity, and the global market dynamics driving both crises. It assesses socioeconomic and ecological shortcomings in some proposed nature-based solutions, showing that they perpetuate an unsustainable business-as-usual approach, and summarizes how these land-use issues are conceptualized as human-rights concerns and translated into policy proposals.