Running the mlsn_manuscript.Rnw file produces the paper. This is published at PeerJ Preprints https://peerj.com/preprints/2144/ where you can view or download the pdf and leave feedback.
The code to calculate the guidelines and make the figures is in the r directory.
The data are in the data directory.
In the paper, we described the sustainability index (SI) as a way to compare any Mehlich 3 soil test result with the MLSN data. This Shiny application calculates the SI based on user input soil test data.