Plant Stress Response Index Calculator R package PSRICalc version 1.0.0 Calculate Plant Stress Response Index (PSRI) from time-series germination data with optional radicle vigor integration. Built on the methodological foundation of the Osmotic Stress Response Index (OSRI) framework developed by Walne et al. (2020) <doi:10.1002/agg2.20087>. Provides clean, direct PSRI calculations suitable for agricultural research and statistical analysis. Note: This package implements methodology currently under peer review. Please contact the author before publication using this approach. Software Depends: R (>= 4.0.0) Richard Feiss <feiss026@umn.edu> Comprehensive R Archive Network (CRAN) Richard Feiss [aut, cre], University of Minnesota [cph] MIT + file LICENSE (https://CRAN.R-project.org/package=PSRICalc/LICENSE) 2025-11-13 application/tgz https://CRAN.R-project.org/package=PSRICalc doi:10.32614/CRAN.package.PSRICalc