The soiltestcorr R package is an open-source software designed to enable accessible and reproducible computation of correlation analyses between crop yield response to fertilization and soil test values. The package compiles a series of functions for analyzing soil test correlation data: (i) Cate & Nelson data partitioning procedure (graphical and statistical versions). (ii) nonli... https://parisnaturalfoodes.shop/product-category/ezekiel-cereal-cinnamon-raisin/