The bibliometric data for devising the citation-based metrics were collected on January 12, 2026. This ensured that all citation counts, publication records, and author profiles were up-to-date and reflective of the researchers’ impacts at that time.
A scientist’s position in the ranking is determined using their D-index (Discipline H-index), a refined bibliometric indicator which measures the impact of a researcher’s publications exclusively within the discipline under examination. This methodological approach ensures that only papers and citation metrics relevant to Plant Science and Agronomy were included in the calculation of each researcher’s D-index, thereby providing a discipline-focused measure of scientific influence.
Scope of Research and Qualification Criteria
The ranking examined bibliometric profiles drawn from a total pool of 279,971 scientist profiles sourced across all disciplines, identifying a subset of 89 scientists specifically within the domain of Plant Science and Agronomy. To qualify for inclusion in the ranking, candidates were required to meet a minimum D-index threshold of 30 within the target discipline. Furthermore, the majority of each qualifying researcher’s tier publications had to be substantively focused on Plant Science and Agronomy, ensuring alignment with the ranking’s thematic scope.
In addition to bibliometric criteria, scientists’ awards and notable scientific achievements in the field of Plant Science and Agronomy were also considered as supplementary factors in the verification process. This added qualitative dimension enhances the credibility of the ranking by recognizing impactful contributions beyond citation counts.
The threshold for the D-index is adjusted in increments of 10 based on the estimated total number of scholars active within each discipline, guaranteeing that the top 1% of leading experts are comprehensively represented. Moreover, to ensure consistency between general scholarly impact and discipline-specific contributions, the proximity between a scientist’s overall H-index and their D-index is maintained at 30% or less.
Additional Verification and Validation Practices
Recognizing that raw bibliometric data alone cannot fully encapsulate a scholar’s output or impact, the Research.com team undertook meticulous manual verification of all scientist profiles included in this ranking. This process involved cross-correlating researcher information against publications confirmed through a broad range of trustworthy and reputable sources in the scientific community.
While the number of papers published in prominent journals and conference proceedings does not directly influence the calculated position within the Research.com ranking, it serves as an important complementary indicator of a scientist’s research contributions within Plant Science and Agronomy.
The final positioning in the ranking is ultimately established by ranking each researcher’s D-index as computed from comprehensive bibliometric information harvested primarily from OpenAlex and CrossRef, underscoring the rigor and data integrity underpinning this ranking.
For a detailed explanation of the methodology employed, we encourage readers 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, corporations, and policymakers worldwide to actively track the trajectory and directions of leading scientific experts. By providing clear visibility into who the foremost contributors are in key research areas—whether by country, discipline, or institution—Research.com fosters an informed and interconnected scientific community.
We aspire to facilitate global knowledge exchange and collaboration by empowering the academic ecosystem to recognize and engage with preeminent scientists in Plant Science and Agronomy, enhancing the overall advancement of these critical fields.
