The bibliometric data used to derive citation-based metrics for this ranking were collected on January 12, 2026, ensuring relevance and currency in the measurement of scholarly impact. A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a metric designed to isolate the impact within a specific scientific discipline. The D-index considers only those papers and citation metrics that pertain directly to the examined field, providing a focused and meaningful assessment of expertise in Plant Science and Agronomy.
Scope of Research and Qualification Criteria
The scope of this ranking encompasses an initial dataset of 279,971 scientist profiles identified across diverse bibliometric data sources and spanning all disciplines. From this broad pool, 276 scientists specializing in Plant Science and Agronomy were extracted for detailed examination.
To qualify for inclusion, a scientist's D-index had to meet a minimum threshold of 30, and the majority of their tier publications needed to be within the Plant Science and Agronomy domain. In addition to bibliometric performance, a scientist’s awards and achievements specifically in this field were also considered as part of a holistic evaluation process.
The D-index thresholds for top researchers are calibrated in increments of 10, aligned with the estimated total number of scholars in each discipline. This approach ensures that the ranking consistently incorporates the top 1% of leading researchers. Furthermore, to maintain specificity and relevance, candidates were required to demonstrate proximity between their general H-index and D-index of 30% or less, affirming their specialized impact within Plant Science and Agronomy.
Verification and Validation Practices
The Research.com team acknowledges that raw bibliometric data alone cannot serve as an absolute measure of scholarly output and impact. To uphold the integrity of the ranking, all scientist profiles underwent manual verification and were cross-correlated with publication records from a wide array of trustworthy academic and scholarly sources.
While the number of papers published in prominent journals and conference proceedings is not a direct factor in establishing a researcher’s position within the ranking, it remains a valuable secondary signal reflecting a scientist’s contribution to the field.
The final ranking positions are derived using the D-index, computed from data obtained from OpenAlex and CrossRef—two of the most prominent and widely recognized bibliometric databases accessible to the research community.
For a detailed explanation of the methodology employed in creating this ranking, readers are encouraged to visit our methodology page.
The Mission of Research.com
Research.com’s mission in creating this ranking is to inspire researchers, academic institutions, companies, and policymakers worldwide to recognize the direction and contributions of leading experts in specialized fields. By providing transparent and data-driven insights into who the foremost specialists are in Plant Science and Agronomy—both nationally within France and in an international context—we facilitate informed decision-making, foster collaboration, and promote excellence in scientific research.
Through meticulous data collection, verification, and analysis, we aim to offer a credible and authoritative resource that supports the entire scientific community in understanding and appreciating subject-specific leadership across disciplines, institutions, and countries.