Bibliometric data utilized to devise the citation-based metrics for this ranking were collected on January 12, 2026. Central to the ranking methodology is the D-index (Discipline H-index), a refined metric that considers only publications and citations within the examined discipline—in this case, Plant Science and Agronomy—thereby ensuring researchers are evaluated by their impact specifically in this field.
Scope of Research and Ranking Criteria
A total of 279,971 scientist profiles, identified from a diverse array of bibliometric data sources, were examined across all disciplines. Specifically, five scientists were identified and assessed within Plant Science and Agronomy. To qualify for inclusion in the ranking, a scientist’s D-index had to be at least 30, with the majority of their tier publications falling within the Plant Science and Agronomy domain.
Beyond quantitative bibliometric measures, scientists’ awards and field-specific achievements were also factored into the evaluation, reinforcing the qualitative aspect of this ranking. The D-index threshold for considering top researchers scales in increments of 10 according to the estimated total number of scholars per discipline, ensuring that the top 1% of leading scholars are always included. Additionally, a proximity criterion mandates that the variance between a scientist’s overall H-index and their D-index remains 30% or less, emphasizing strong research focus within the discipline.
Additional Verification Practices
Recognizing that raw bibliometric data alone should not serve as an absolute measure of scholar output, all scientist profiles were subjected to careful manual verification and cross-correlation with publications indexed in a wide spectrum of credible sources. This rigorous validation process safeguards the integrity and credibility of the ranking.
While not a direct factor influencing a researcher’s position in the Research.com ranking, the number of papers published in prominent journals and conference proceedings constitutes an important secondary indicator of a scientist’s contribution to their specialized area of research.
The final ranking positions are established primarily through each researcher’s D-index, grounded in meticulously gathered data from OpenAlex and CrossRef, the most prominent and respected bibliometric databases accessible to the global research community. For a detailed explanation of our methodology, we encourage readers to visit our methodology page.
The Research.com Agenda
Our mission at Research.com is to inspire researchers, corporate entities, and policymakers worldwide to explore emerging directions taken by leading experts, and to provide a transparent, authoritative platform that illuminates who the foremost scientists are in specific fields of study. Whether examining talent within countries, institutions, or particular research areas, our ranking fosters greater awareness and collaboration within the global scientific community.
Through rigorous and meticulous compilation processes, we aim to build trust and credibility, empowering stakeholders with reliable insights to guide academic collaborations, funding decisions, and policy formulation.
