The bibliometric data, which serves as the basis for the citation-based metrics utilized in this ranking, were collected on January 12, 2026. A key metric employed to determine a scientist’s position in the ranking is the D-index (Discipline H-index). The D-index specifically measures the research impact of a scientist within a focused discipline by incorporating only those papers and citation metrics that are relevant to the examined field.
Scope of Research Covered
The ranking methodology involved a rigorous examination of 279,971 scientist profiles identified from a variety of bibliometric databases across all disciplines. Within the domain of Plant Science and Agronomy specifically, 368 scientists were evaluated. To qualify for inclusion in the ranking, a scientist’s D-index had to meet a minimum threshold of 30, and the majority of their tier publications were required to be within the scope of Plant Science and Agronomy.
In addition to bibliometric performance, scientists’ awards and achievements relevant to Plant Science and Agronomy were also factored into the assessment process. The D-index threshold for each discipline is dynamically calibrated as an increment of 10 based on the estimated total number of scholars in that discipline. This approach guarantees that the top 1% of leading scholars are encompassed within the ranking, maintaining a proximity of 30% or less between a scientist's overall H-index and their discipline-specific D-index.
Verification and Validation Processes
Recognizing that raw bibliometric data cannot singularly represent the full scope of scholarly output, the Research.com team has employed meticulous manual verification and cross-correlation procedures. Each scientist profile included in the ranking was carefully validated against publication records found in a diverse array of trustworthy sources to ensure accuracy and authenticity.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s position in the ranking, it serves as a valuable secondary indicator of scientific contribution within a specific area. The definitive ranking positions are established based on the D-index metric, derived from data sourced from OpenAlex and CrossRef, two of the most prominent and respected bibliometric databases accessible to the research community.
For a more detailed explanation of the methodology and validation protocols employed in the ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission to inspire researchers, companies, and policymakers worldwide to closely monitor the trajectories of leading experts. By providing a transparent and reliable platform, Research.com supports the broader scientific community in identifying and engaging with pioneering scholars in specialized fields such as Plant Science and Agronomy.
Through diligent, data-driven analysis and thorough validation, the ranking serves as an essential resource for academic institutions, industry leaders, and government entities aiming to foster collaboration, innovation, and informed decision-making based on the recognition of top-tier scientific expertise.
