Data Sources and Ranking Metrics
The 5th edition of the Research.com Best Plant Science and Agronomy Scientists in France Ranking is based primarily on bibliometric data sourced from prominent databases such as OpenAlex and CrossRef, complemented by multiple additional data sources to ensure comprehensive coverage. The citation-based metrics incorporated into the ranking were collected as of January 12, 2026. A scientist’s position within the ranking is determined by their D-index (Discipline H-index), a refined metric that considers only publications and citation counts within the specific discipline under examination, in this case, Plant Science and Agronomy. This approach ensures that the evaluation is directly tied to a researcher’s impact and contributions in the relevant scientific field.
Scope of Research and Qualification Criteria
The ranking process began by examining 279,971 scientist profiles compiled from a variety of bibliometric data sources across all disciplines. Out of this extensive dataset, 276 scientists were identified specifically within the field of Plant Science and Agronomy. To qualify for inclusion in this ranking, researchers were required to have a D-index of at least 30, with the majority of their tier publications concentrated in Plant Science and Agronomy. Additionally, recognized awards and achievements in this field were taken into account as complementary factors that reflect scholarly distinction.
The threshold for the D-index is calibrated based on the estimated total number of scholars within the discipline, with increments of 10 to adjust for disciplinary size while also ensuring that the top 1% of leading researchers are included in the ranking. Furthermore, a proximity criterion mandates that a scientist’s general H-index and their discipline-specific D-index differ by no more than 30%, confirming that their broader research impact aligns closely with their specialized contributions.
Verification and Validation Practices
Recognizing the limitations of raw bibliometric data as an absolute measure of academic quality, the Research.com team undertakes meticulous manual verification of all scientist profiles. This process includes cross-referencing publication records against a wide range of authoritative and trustworthy sources. While the ranking position is determined solely by the D-index calculated from OpenAlex and CrossRef data—both of which are well-established and widely respected bibliometric databases—the number of papers published in prominent journals and conference proceedings serves as an important secondary signal indicating a scientist’s contribution to their field.
Experts and readers are encouraged to consult our methodology page for a detailed account of the principles, data collection protocols, and analytical techniques employed in producing this rigorous ranking.
Research.com’s Mission and Vision
At Research.com, our mission is to motivate researchers, companies, and policymakers worldwide to gain insightful perspectives on the trajectories of leading experts. By providing a transparent, data-driven, and carefully verified platform, we facilitate the scientific community’s ability to identify and engage with the foremost specialists within specific research domains, countries, and institutions. Through this endeavor, we aim to foster collaboration, promote excellence, and support informed decision-making that advances global scientific progress.