Research & reports

Elliot Buckminster, Charlotte Breckenridge, Thomas Sedgwick · International Journal of Research in Agronomy · United Kingdom

This research quantified soil-to-plant transfer factors for six heavy metals (Cd, Pb, Zn, Cu, Ni, Cr) in lettuce, spinach, and carrot across 20 peri-urban agricultural sites in Berkshire, UK, from 2021-2022. Cadmium exhibited the highest mean transfer factor (0.31), and at 4 of 20 sites, cadmium concentrations in lettuce exceeded the EU maximum limit of 0.20 mg/kg fresh weight. Soil pH was a strong predictor for Cd and Zn transfer factors, with TFs increasing below pH 6.0.

Jean de Dieu Minengu, Aiko Ikonso Mwengi, Romain Kawanga, Simon Mwengi, Oscar Mangunda Yama · Revue Africaine d’Environnement et d’Agriculture · Africa

Market gardening in Kinshasa's urban and peri-urban areas faces multiple constraints, including land insecurity, low natural soil fertility, the incidence of diseases and pests, weak technical support, climate hazards, poor input supply, and problematic marketing systems. These constraints limit yields in production sites and hinder the development of market gardening activities.

Lee D. Bryant, Roy Maconachie, Bastian Schnabel, Abubakarr Swaray, Howard Gigi, Solomon Gbanie, Kabba Haroun Bangura, Anthony Kamara, Prince Antwi-Agyei · Water Science & Technology Water Supply · Sierra Leone (Freetown)

This paper examined the environmental health status of three urban and peri-urban agriculture (UPA) sites in Freetown, Sierra Leone. Qualitative and quantitative data revealed heavy metal concentrations significantly exceeding regulatory limits in sweet potato leaves and arable soil. Additionally, soaring levels of faecal coliform bacteria were found in irrigation water, and crops were identified as hyperaccumulators for environmental contaminants.

Jon Marín, Teresa Garnatje, Joan Vallès · Sustainability · Spain (Barcelona)

This study investigated whether agro-food supply chains in peri-urban agricultural areas contribute to preserving local biodiversity, using the Baix Llobregat Agrarian Park in Spain as a case study. Analysis of different food retailers revealed variations in plant diversity, origin, and seasonality. Farmers' markets were found to exhibit higher intraspecific diversity, contributing to local agrobiodiversity conservation.

Concetta Cardillo, Orlando Cimino · Rural and regional development · Italy

An economic evaluation of urban and peri-urban agriculture in the Rome metropolitan area was conducted using Italian FADN data from 2008–2020 to analyze agricultural land use changes. The analysis revealed that farms are mainly specialized in arable land and herbivores, operated predominantly by men aged 40–65 with a high school education. While economic performance was good, it varied yearly, and few farms resorted to other gainful activities to increase income, suggesting greater diversification of agricultural activities is desirable.

L. Garcia Ferreira, M. E. F. CORREIA, M. C. UZEDA · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil (Rio de Janeiro)

This study evaluated the role of agroecological urban and peri-urban agriculture in preserving native bee communities in the western region of Rio de Janeiro, Brazil. Ten different bee species, nesting in soil and cavities, were identified. Generalized Linear Models (GLMs) indicated that the percentage of agricultural, natural, and built-up land cover was insufficient to explain the species composition regarding their nesting habits. The findings suggest the importance of assessing the quality of agricultural environments, as their association with urban landscapes could support a greater richness of species with diverse nesting habits.

Alberto Matarán-Ruiz, David Fanfani, Josefa Sánchez Contreras, Miguel Ángel Escalona Aguilar · · Central America; Europe

This chapter examines bioregional food systems and territorialization processes in peri-urban agricultural areas, using three case studies from Central America and Europe. It notes that the historical co-evolutionary relationship between cities and surrounding farmlands weakened in modernity due to the global capitalist market, which reduced food to a commodity. The study highlights current problems while exploring how inherited relationships are being revived to adapt urban bioregions to climate emergency and resource scarcity.

Wa Ode Hesty Eka Prawira, Batara Surya, Syafri Syafri · Urban and Regional Studies Journal · Indonesia

To analyze the impact of land use change on settlement development in Moncongloe Bulu Village, Indonesia, quantitative descriptive analysis, multiple linear regression analysis, and SWOT analysis were employed. The study found that land use change and land availability affect the fulfillment of settlement development needs, while the activity system does not. Suggested strategies include maintaining productive agricultural land and developing the concept of urban farming to utilize land in the new town.

Lubna Taj, Tahira Yasmeen, Waqas Haidar, Qasim Ali, Muhammad Arif · Soil & Environment · Pakistan

A two-year study (2016-2017) in Pakistan's peri-urban agricultural areas investigated the impact of seasonal variations in wastewater irrigation on sugarcane. Sugarcane irrigated with wastewater showed increased antioxidant activities compared to freshwater-irrigated plants, suggesting biochemical adjustments to contaminants. Significant seasonal differences in plant mineral content were also observed, indicating that wastewater irrigation can alter plant physiology and affect agricultural output.

Xiu-li LUO, Xiaobin Jin, Xiaojie Liu, Su-shu ZHANG, Su-chen YING, Yinkang Zhou · 自然资源学报 · Global

This study, based on symbiosis theory, proposes a mechanism and model of comprehensive land consolidation to promote integrated urban and rural development in peri-urban areas. It showed that main obstacles to symbiotic peri-urban systems are non-equilibrium development in symbiotic units, unequal mobility of elements in the symbiotic environment, and asymmetry and non-reciprocity of symbiotic models. Comprehensive land consolidation reshapes the symbiotic environment through element flow, reconstructs symbiotic units through spatial reconstruction, and drives the symbiotic model through functional promotion, leading to symmetric and reciprocal benefits in urban-rural systems.

Francesca Monticone, Antonella Samoggia, Elena Viti · Journal of Consumer Behaviour · Italy

This mixed-methods study investigated Italian consumers' perceptions, barriers, and drivers for urban food purchasing and consumption apps, and analyzed the features of existing apps. The desire to eat fresh and seasonal food was identified as the main driver for buying from (peri)urban agriculture initiatives, and a mismatch emerged between consumer needs and app features. Sustainability food profiles and information on seasonal food are preferred by consumers but are present in a limited number of apps.

Marcelo Macedo Guimarães, Mariluce Paes de Souza · Revista de Gestão Social e Ambiental · Brazil

A qualitative study of a Conservation Unit in the Brazilian Amazon (the Lago do Cuniã Extractive Reserve) analyzing the role of forests within the water-energy-food nexus, focusing on how traditional populations use non-wood natural resources for their survival. Data were collected through questionnaire-based interviews and non-participant observation. The results show that maintaining forest resources improves water quality, controls erosion and resilience against droughts and floods, contributes to energy supply, and contributes to food safety for residents of the conservation unit. The authors note policy implications for management practices to conserve forests and to protect the quantity and quality of rivers, lakes, and aquatic and agricultural ecosystems in the reserve.

Michele Deri · Florence Research (University of Florence) · Italy

This paper examines the peri-urban agricultural park, an instrument that has gained significant importance in Italian territorial policy in recent years, as a tool for integrated governance of peri-urban territory and socio-ecological factors. Based on a desk analysis, it selects several major Italian experiences and presents an initial overview of the characteristics this tool presents in various contexts, in terms of both process and project. The paper highlights the relevance and diffusion of the instrument in public discourse and territorial governance practices, as well as the strengths, limitations, and critical issues the various cases present in operational terms, concluding that further exploration of its design and management characteristics as a connective element between planning and rural development is needed.

Maulia Usni, Melani Fitri · Prosiding Seminar Nasional Pembangunan dan Pendidikan Vokasi Pertanian · Indonesia

Based on a literature review drawing on books, websites and journals, this study examines how urban farming can support agricultural sustainability in West Sumatra Province, Indonesia. Framing sustainability around the availability of natural resources, human resources and environmental quality, it identifies strategies for optimizing urban farming, including microgreens cultivation, hydroponics, aeroponics, vertical cropping systems (vertikultur), and indoor vertical farms.

Richard Morris, Shannon Davis, Gwen‐Aëlle Grelet, Pablo Gregorini · Land · Global

Applying a GIS-based model (ESMAX), this study tests a spatial method called "Agroecology for the City," aimed at maximizing ecosystem services (ES) in outwardly expanding peri-urban development. Agroecological farm system (AFS) parcels of 1 ha and 4 ha were configured within a real-world 200 ha peri-urban residential development to identify arrangements maximizing the supply of three regulating ecosystem services the local community identified as critical, plus multifunctional performance across them. Configurations with AFS parcels interspersed evenly among built-up areas provided the best multifunctionality across the four ecosystem services tested.

Matthias Winfried Kleespies, Dorian D. Dörge, Norbert Peter, Anna V. Schantz, Ajdin Skaljic, Viktoria Feucht, Anna Lena Burger-Schulz, Paul Wilhelm Dierkes, Sven Klimpel · Biological Invasions · Germany

Surveying more than 2,200 people across nine stakeholder groups in Germany involved with invasive species—hunters and hunting association members, farmers, environmental and conservation organization members, allotment garden club members, animal welfare supporters, divers, zoo employees, regulatory authority administrative staff, and speleologists—this study investigated how these groups perceive invasive species. The number of invasive animal and plant species in Germany was roughly correctly estimated across all groups, but the economic damage they cause was substantially underestimated. Species named were mostly conspicuous ones such as raccoons (Procyon lotor) or Impatiens glandulifera, and while all groups showed notable interest in invasive species and regarded them as an environmental issue, the study found a need for greater education about inconspicuous invasive species and the damage they cause.

Lorenta In Haryanto, Tri Yuni Hendrawati, Darto Darto, Febri Yani, Firgi Adha Listanto, Dimas Yoga Pradipta Pratama · Abdimas Jurnal Pengabdian Masyarakat Universitas Merdeka Malang · Indonesia

A community-service report on introducing solar-powered water pumps for hydroponic systems with the farmer group Hidroponik Generik (HG) in Pesanggrahan, Indonesia, from April to October 2024, including training and assistance in vertical hydroponic technology and solar power generation. An 800 Wp solar panel supplied 1,600 Wh daily, powering pumps for 12-13 hours and cutting electricity usage by 66%, reducing monthly expenses by 10%. Combined with the vertical hydroponic installation, farm income increased by 15%, and participants' understanding of solar technology improved by 45%.

Adriana Martins da Silva Bastos Conceição, Márcia Bento Moreira, Hélder Ribeiro Freitas · Peer Review · Brazil

A study in the Território de Identidade do Vale do Jiquiriçá, Bahia, Brazil surveyed municipal agriculture-department professionals through an online questionnaire (stages I and III) and field research (stage II). Online questionnaires initially identified only 12 urban and peri-urban agriculture experiences, but field visits raised that count to 62 active experiences. Stage III data showed professionals lack understanding of the urban agriculture concept and its potential, and that the legal provisions regulating the practice need much wider dissemination for implementation; the data indicate that urban agriculture in the territory's municipalities goes largely unnoticed and is not addressed in public policy.

Anant Bahadur, Anish Kumar Singh, Hare Krishna, Rajeev Kumar, V. K. Patel, Tusar Kanti Behera · Indian Journal of Horticulture · India

Over three years (2019-2022) at ICAR-IIVR, Varanasi, India, researchers grafted four brinjal cultivars and three tomato cultivars as scions onto the vigorous, waterlogging- and salinity-tolerant brinjal rootstock IC 111056 to produce dual-fruiting 'Brimato' plants. The Kashi Manohar scion combined with Kashi Aman or Kashi Chayan gave the highest brinjal fruit numbers, while Kashi Aman combined with the Kashi Sandesh rootstock hybrid gave the highest tomato fruit numbers; the Kashi Sandesh + Kashi Chayan combination produced the highest total fruit yield at 2.58 kg/plant, and Kashi Aman + Kashi Sandesh reached a cumulative yield of 5.98 kg/plant. Photosynthetic rate and chlorophyll fluorescence varied significantly by scion, with Kashi Manohar and Kashi Aman showing the highest photosynthetic rates, and grafted plants showed higher vitamin C and β-carotene content.

Rahul B. Hiremath, Sheelratan S. Bansode · Practice, progress, and proficiency in sustainability · India

This book chapter examines the use of treated urban wastewater to support agricultural resilience in Indian cities amid rapid urbanization that strains water supplies for farming. Using an interdisciplinary approach, it evaluates current practices, policy frameworks and stakeholder engagement to assess the practicality and efficiency of incorporating treated wastewater into urban agricultural systems, addressing both the potential benefits and the difficulties involved rather than reporting a specific measured outcome.

Iara Rafaela Gomes · Sociedade & natureza · Brazil

A study examining agricultural activity, in particular family farming, in the Fortaleza Metropolitan Area (FMA) of Ceará State, Brazil. Drawing on primary and secondary data on producer profiles and agricultural and food-processing establishments in the region, it identifies key issues in production and food systems within the FMA. The study presents the production strategies used by family farmers, the challenges they face, and opportunities they identify, and argues that examining agriculture in metropolitan areas links socio-spatial and socio-environmental problems and points toward cross-sectoral public policy.

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.

Xanath Bautista-Villalobos, Eduardo Garcı́a-Frapolli · Hábitat y Sociedad · Mexico

Two community urban gardens in Mexico City were analyzed through the lenses of agroecology, the social and solidarity economy, and social innovation. Working with garden administrators and key participants, the researchers defined participatory indicators and ran workshops to gauge local perceptions of how the gardens function. Both initiatives were viewed positively by their communities, though few residents were actually involved. Most evaluated variables scored satisfactorily, but aspects such as the source and use of water, income distribution within the community, and the creation of communal budgets had not met their objectives.

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.

Akiko Iida, Toru Terada, Kazuaki Tsuchiya, Tadashi Yamaguchi, Makoto Yokohari · Urban forestry & urban greening · Japan

Using Tokyo — where urban and agricultural land use have long been intermixed — as a case study, mailed questionnaires and in-person semi-structured interviews with urban farmers examined how community-scale composting of urban-forest green waste is integrated into commercial urban agriculture (2024, Japan). About one-third of professional urban farmers still produced compost, mainly from leaf litter, to improve soil quality, and had adapted to urbanization by sourcing leaf litter beyond their own woodlands from neighboring urban forests within a few kilometers, including parks, schools, and shrines. While urbanization has drastically altered the physical landscape, farmers have carried this intangible composting system forward for hundreds of years by retrofitting it, though the study found farmers are motivated by economic rather than environmental reasons. The authors conclude that decentralized composting works effectively in commercial urban agriculture where waste supply and demand sites are geographically close, and call for further research on scaling up waste recycling through urban agriculture.