Research & reports

Harniati Harniati, Reni Suryanti · Jurnal Penyuluhan Pertanian · Indonesia

This study investigated urban farmers' accessibility to agroinputs in intra-urban (Situ Gede, Margajaya) and peri-urban (Pasir Buncir, Pasir Eurih of Tamansari) areas in Indonesia. The findings revealed that land, labor, feed concentrate, fertilizer, and seeds are difficult for farmers to access. Specifically, peri-urban paddy land ownership is less than 0.2 Ha, intra-urban farmers are landless, outside labor is limited and expensive, and feed concentrate for sheep is rarely available and unaffordable. These limited accessibilities present problems and challenges for urban agribusiness development.

黄甘霖 HUA Yeyu 华野毓 · Acta Ecologica Sinica · China (Beijing)

Ecosystem services from peri-urban organic farms in Beijing, China, were evaluated as of 2019. It was found that there were 271 organic farms in the suburbs of Beijing, covering a planting area of 10,900 hectares, accounting for 5.1% of the arable land in Beijing. Provision services were valued at 1.612 billion Yuan, regulation services (soil carbon sequestration) at 21.4 million Yuan, and cultural services (picking, farmers' markets, education activities) at 118.9 million Yuan. Organic farms also reduced energy use and emissions compared to conventional farms of the same area.

Fatiha Hakimi · Journal of Analytical Science & Technology · Morocco (Rabat)

This study assessed the practices, roles, and challenges of peri-urban farming in the metropolis of Rabat, Morocco, surveying 50 respondents. Peri-urban agriculture is a multifunctional activity contributing to job creation, income generation, food supply, and environmental beautification. However, it faces several constraints, including precarious and costly labor, absence of regulating laws, lack of training and technical supervision for peri-urban farmers, and water resource shortages.

Sofia Nikolaidou · Cahiers de la Méditerranée · Greece (Athens)

This article analyzed the role of peri-urban agriculture and alternative food networks (AFN) in the Athens metropolitan area, Greece, using a mixed method approach including qualitative, quantitative research, and spatial data collection. Bottom-up claims for food security positively impacted sustainable food systems and public policies, while informal retail channels and self-production schemes strengthened agricultural resilience. However, poor land management and zoning control are major constraints to sustainable agricultural production and farmers' resilience in the Athens metropolitan area.

Shwan Mohammed, P. K. Nyade, Mohamad Abdulhamid, I. O. A. Hodgson · Water Science · Ghana (Accra)

This study assessed urban water quality parameters of the Nima Creek in Southeastern Accra, Ghana, sampling water from six locations. The results showed high enrichment of nutrients (ammonia, nitrate, phosphate) and elevated levels of BOD, COD, and grease at sites receiving solid and liquid wastes. Physicochemical parameters like conductivity, TSS, and TDS also exhibited elevated values, indicating significant contamination that poses challenges for sustainable urban agriculture.

Claudia Marani, A. Lighezzolo, C. Bisio, Beatriz Giobellina, Diego Pons · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Argentina

This report, part of the SAT-CV-CBA Project, aims to inform provincial authorities and the community about the estimation of horticultural areas affected by extreme weather events in Córdoba, Argentina, at the end of January 2021. It estimates the number of farms, crop losses based on vulnerability, and storm intensity. The information is expected to be useful for supporting affected producers.

Wouyo Atakpama, Madjouma KANDA, Fousséni Folega, Denis Talate LAMBONI, Komlan Batawila, Koffi AKPAGANA · DOAJ (DOAJ: Directory of Open Access Journals) · Togo

This study mapped agricultural spaces, characterized participants, practices, and species, and evaluated the socio-economic importance of urban and peri-urban agriculture (UPA) in Lomé, Togo. Using Google Earth, field inventories, and surveys of 89 producers, it found that indigenous, married landowners were most involved. Maize (57.7%) and cassava (39.0%) were the most frequently cultivated among 34 identified species.

Mary Njoki Mwaura, Sabina Mukoya-Wangia, Japheth Ododa Origa, O.L.E. Mbatia, Evans Chimoita · Journal of Agricultural Extension · Kenya

A study of 149 respondents in Nairobi County examined urban and peri-urban agricultural practices, finding composting and open field farming popular but not the most profitable. More profitable practices like cattle rearing and mushroom farming were unpopular due to expensive inputs and specialized skills. The study indicates that popular practices are less profitable, highlighting a need for transformation towards controlled environment agriculture with policy support.

Seema Purushothaman, Sheetal Patil, Raghvendra S. Vanjari, A. R. Shwetha · · India (Bengaluru)

A participatory assessment in Byramangala, Bengaluru, explored farmers' perspectives on using wastewater (domestic sewage with industrial effluents) for irrigation. The study found that farmers were adapting to a heavily polluted environment, which resulted in restricted crop choices, lower produce prices, health impacts, and socio-cultural consequences. Despite concerns about water quality, farmers prioritized health-imparting agriculture and were keen to continue farming, but their preference for treated wastewater was overshadowed by its potential diversion for urban use.

Martin MASSOUANGUI-KIFOUALA · International journal of innovation and applied studies · Republic of Congo (Pointe-Noire)

This article analyzed precipitation data in Pointe-Noire, Republic of Congo, using agronomic criteria and frequencies to understand rainy season behavior for agricultural planning. The study found that Pointe-Noire has a bimodal rainfall regime, allowing for two cultivation periods annually. However, the rainy seasons are very random, with increasingly late starts, early endings, and shortening durations over the years.

Camille Dumat · Aspects in Mining & Mineral Science · Global

This paper discusses the negative environmental and health impacts of mining, such as air and soil pollution, despite its socio-economic benefits. It highlights that urban agriculture, particularly in areas near former mining sites, faces challenges regarding soil quality and the production of unpolluted vegetables due to public concerns about contamination.

Dong BaoCheng, Wei Li, Wenyong Xu · Antibiotics · China

A field experiment in peri-urban agricultural soil in China investigated the effects of partially substituting chemical fertilizer with organic fertilizers like pig manure and sewage sludge on soil quality and antibiotic residues. Organic substitution significantly increased residual antibiotic levels in agricultural soil, with antibiotic sequestration rising by 138.1~332.5%. This indicated that organic fertilizers can promote antibiotic persistence in soil by modifying soil quality, demonstrating a contamination risk.

Ambrogio Zanzi, Federico Andreotti, Valentina Vaglia, Sumer Alali, Francesca Orlando, Stefano Bocchi · Sustainability · Italy (Milan)

This study aimed to assess the benefits of an agroecological requalification of a dismissed peri-urban area in the South Milan Agricultural Regional Park, Italy. Using I-Tree Eco software, the provision of ecosystem services from planting new hedgerows was simulated over 30 years, showing that the planted area becomes an essential supplier of regulating ecosystem services for neighborhoods, increasing carbon storage and air pollution removal. A notable increase in carbon sequestration was observed at the end of the simulation, demonstrating a replicable methodology and techniques for assessing ecosystem services in urban and peri-urban environments.

Luísa Lima Leal, A. P. D. Turetta, C. L. Capeche, Luiz Felipe Guanaes · Brazilian Journal of Development · Brazil

This study conducted a descriptive analysis of the legal framework for urban and peri-urban agriculture (AUP) in the Municipality of Rio de Janeiro, Brazil, at municipal, state, and federal levels. It found that while agricultural regulation in Brazil is primarily rural-focused, AUP can be integrated into development plans, sustainable strategies, and food security initiatives, despite lacking specific dedicated legislation.

Solomon Tulu Tadesse, O. Oenema, Christy van Beek, Fikre Lemessa Ocho · Frontiers of Agricultural Science and Engineering · Ethiopia

This study in Jimma, Ethiopia, from 2015-2050, used an N mass flow model and field experiments to explore manure recycling from urban livestock farms under four scenarios. It found that livestock manures are the main organic wastes in urban areas, and manure production in urban and peri-urban agriculture (UPA) is projected to increase 3 to 10 times. Critically, only 13% to 38% of manure nitrogen will be recycled in croplands, and intensification of urban livestock production greatly increased nitrogen surpluses, indicating a significant environmental tradeoff.

Fatiha Hakimi, Mohamed Brech · International journal of food science and agriculture · Morocco

This study assessed peri-urban agriculture practices, roles, and challenges in Rabat Metropolis, Morocco, by surveying 50 respondents using purposive and stratified random sampling. Major practices included horticulture, crop farming, and livestock rearing. Peri-urban agriculture contributes to economic development by generating income, creating employment, supplying food, and enhancing land use and environmental beautification. However, it faces legal constraints, such as a lack of regulating laws and housing taxes, and technical constraints, including insufficient workforce, high labor costs, difficult access to irrigation water, and lack of training and support.

Enrico Gottero, Claudia Cassatella, Federica Larcher · Land · Italy (Turin)

This research developed a holistic method and map-based indices for interpreting and classifying peri-urban landscapes, focusing on open spaces to understand their complexity and identify homogeneous units. The method was applied to the peri-urban area of Turin, Italy, generating maps of spatial and functional classification at the landscape unit level, as well as a map of critical areas for improvement. Despite some minor limitations, the proposed method and tools appear to have a range of applications in the context of global challenges and from a landscape perspective.

Simone Valeri, Laura Zavattero, Giulia Capotorti · Land · Italy

This study addresses knowledge gaps in selecting plant species and understanding landscape heterogeneity's role in dispersal success for Green Infrastructure (GI) planning. It suggests a methodological approach for fine-scale assessment in peri-urban agricultural landscapes, using a case study in the Metropolitan City of Rome. The approach involved stratifying the area, defining GI components, characterizing the area with Morphological Spatial Pattern Analysis, assessing connectivity, and prioritizing conservation measures. Despite recognized limits, the approach proved functional for the context and detail level.

K.R.M. Swamy, Prem Nath · · Global

This paper discusses important messages emerging from several international horticultural conferences and workshops held in the new millennium. Messages from these conferences, conducted over the last decade in India and other countries, were extracted under headings such as the status of horticulture in the food world, education, research, extension, production, development, policy, and technical cooperation among developing countries.

Nibret Sefiw Adugnaw · Open access jounrals · Ethiopia

This study examines the impact of urban expansion on peri-urban farming communities in Lalibela town, Amhara Regional State, Ethiopia.

Zachary Burt, C. Shambu Prasad, Pay Drechsel, Isha Ray · Journal of Water Sanitation and Hygiene for Development · India (Karnataka)

A preference-ranking model was developed to understand the acceptance of fecal sludge-derived fertilizer (FSF) in Karnataka, India, by modeling farmowners and farmworkers separately. The study found that farmers willing to use FSF prefer to conceal its origins from workers and their caste group, especially caste-adhering, vegetarian farmowners. Workers were open to FSF if it resembled cow manure, revealing that the waste economy in rural India is shaped by unacknowledged caste hierarchies and practices.

Maria Elena Peralta-Culcay, Hugo Alberto Cedillo-Tapia, Alfonso Suárez-Tapia · Dialnet (Universidad de la Rioja) · Ecuador (Cuenca)

This research characterized the technological use among small (500-1000 m2) and medium (1000-3000 m2) peri-urban horticultural producers in San Joaquín, Baños, and Sayausí, Cuenca, Ecuador, using a survey. The survey found that most production is sold in local markets, following an ancestral system with some additional technology. The identified technological efficiency was at a medium level (3 on a scale of 1 to 5), indicating a technological deficit.

Xingjia Wang, Wenbo Li, Dongyan Wang, Songze Wu, Zhuoran Yan, Jiaqi Han · Ecological Indicators · China

A 'trinity' assessment method was developed to evaluate heavy-metal contamination in peri-urban soil–crop systems in Northeast China, covering total, available, and accumulated heavy metals. While traditional methods indicated less contamination, the trinity method revealed spatial clustering of heavy-metal contamination in cultivated lands caused by urbanization and industrialization, and a decreasing urban–rural trend in contaminated areas, particularly in transition zones.

Matthew L. Richardson, Caitlin G. Arlotta · Scientia Horticulturae · United States (Washington, DC)

This study grew seven genotypes of Hibiscus sabdariffa L. in green roof, field row, and high tunnel systems in and near Washington, DC, to compare leaf and flower yield, nutritional differences, and insect pest susceptibility. Genotype PI 286316 produced abundant flowers, particularly in high tunnels, while leaf production was highest in field rows despite frequent Popillia japonica attacks. PI 273388, PI 275414, and green hibiscus yielded the most leaves, and genotypes showed nutrient differences regardless of the production system. The locally adapted green hibiscus performed well across systems, was least attacked by pests, and had higher nutrient levels, demonstrating H. sabdariffa's suitability for temperate urban systems.

Umbu Joka, Aprianus Nelson Bana · Agribusiness Journal · Indonesia (Kefamenanu City District)

This survey study, conducted in June 2020 with 20 farmers from the Nekaf Mese farmer group in Benpasi Village, Indonesia, aimed to determine the income and relative advantages of urban bean farming. Farmers cultivated 6-9 acres, generating an average revenue of Rp. 1,827,500 and an average income of Rp. 796,050 per planting season. The average relative profit was 1.74, indicating economic profitability.