Bibliometric Analysis on Biochar Research in the Philippines

Date Received: Jun 18, 2025

Date Accepted: Oct 29, 2025

Date Published: Mar 31, 2026

DOI: https://doi.org/10.31817/vjas.2026.9.1.11

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Spencer, A. C., & Arjay, B. B. (2026). Bibliometric Analysis on Biochar Research in the Philippines. Vietnam Journal of Agricultural Sciences, 9(1), 2915–2929. https://doi.org/10.31817/vjas.2026.9.1.11

Bibliometric Analysis on Biochar Research in the Philippines

June Spencer A. Cera (*) 1   , Arjay B. Bedaña 2

  • Corresponding author: [email protected]
  • 1 College of Agricultural Sciences and Technology, Isabela State University, Cabagan, Isabela, Philippines, 3328
  • 2 College of Agriculture, Kalinga State University, Tabuk City, Kalinga, Philippines, 3800

    • Keywords

    Biochar review, VOSviewer, visualization, application, Philippines

    Abstract


    This review aimed to analyze the status of biochar research in the Philippines over the past twenty years (2004-2024) in order to provide direction for future research. The bibliometric analysis of 215 publications from Scopus and Google Scholar using Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) showed that the trends in biochar research in the Philippines are increasing for various uses. However, collaborations, the number of researchers, and other problems related to funding, policies, markets, and human factors need to be addressed to advance biochar research in the country. The current thematic clusters include identifying suitable biomass sources for pyrolysis, exploring the adsorptive properties of biochar in the environment, and utilizing it as a carrier for arbuscular mycorrhizal fungi (AMF). However, the limited clusters imply fewer applications, indicating the potential for biochar to expand into various other utilizations. In addition, the economic return has not been thoroughly studied, which affects the adoption of technology by end users. Chronologically, biochar has been observed shifting from identifying potential biomass sources to a more field-specific utilization, which suggests advancements in biochar research, although further exploration is recommended.

    Author Biography

    June Spencer A. Cera, College of Agricultural Sciences and Technology, Isabela State University, Cabagan, Isabela, Philippines, 3328

    He is a Soil Science teacher (Assistant Professor I) and researcher at Isabela State University in the Philippines. His research interests generally encompass all fields within agricultural sciences, with a particular focus on soil science and crop science. Additionally, he also has a background in Community Development studies.

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