doi:10.1071/CP16444>); 2) the graphical Cate-Nelson quadrants analysis (Cate & Nelson (1965)), 3) the statistical Cate-Nelson quadrants analysis (Cate & Nelson (1971) <doi:10.2136/sssaj1971.03615995003500040048x>), 4) the linear-plateau regression (Anderson & Nelson (1975) <doi:10.2307/2529422>), 5) the quadratic-plateau regression (Bullock & Bullock (1994) <doi:10.2134/agronj1994.00021962008600010033x>), and 6) the Mitscherlich-type exponential regression (Melsted & Peck (1977) <doi:10.2134/asaspecpub29.c1>). The package development stemmed from ongoing work with the Fertilizer Recommendation Support Tool (FRST) and Feed the Future Innovation Lab for Collaborative Research on Sustainable Intensification (SIIL) projects.">

soiltestcorr: Soil Test Correlation and Calibration (original) (raw)

A compilation of functions designed to assist users on the correlation analysis of crop yield and soil test values. Functions to estimate crop response patterns to soil nutrient availability and critical soil test values using various approaches such as: 1) the modified arcsine-log calibration curve (Correndo et al. (2017) <doi:10.1071/CP16444>); 2) the graphical Cate-Nelson quadrants analysis (Cate & Nelson (1965)), 3) the statistical Cate-Nelson quadrants analysis (Cate & Nelson (1971) <doi:10.2136/sssaj1971.03615995003500040048x>), 4) the linear-plateau regression (Anderson & Nelson (1975) <doi:10.2307/2529422>), 5) the quadratic-plateau regression (Bullock & Bullock (1994) <doi:10.2134/agronj1994.00021962008600010033x>), and 6) the Mitscherlich-type exponential regression (Melsted & Peck (1977) <doi:10.2134/asaspecpub29.c1>). The package development stemmed from ongoing work with the Fertilizer Recommendation Support Tool (FRST) and Feed the Future Innovation Lab for Collaborative Research on Sustainable Intensification (SIIL) projects.

Version: 2.2.1
Depends: R (≥ 3.6.0)
Imports: stats, dplyr, rlang, tidyr, utils, purrr, data.table, ggplot2, ggpp, nlstools, minpack.lm, modelr, nlraa, AICcmodavg, smatr
Suggests: knitr, rmarkdown, testthat
Published: 2024-07-01
DOI: 10.32614/CRAN.package.soiltestcorr
Author: Adrian A. CorrendoORCID iD [aut, cre, cph], Austin Pearce ORCID iD [aut], Fernando Miguez ORCID iD [ctb], Deanna Osmond ORCID iD [aut], Ignacio A. CiampittiORCID iD [aut]
Maintainer: Adrian A. Correndo
BugReports: https://github.com/adriancorrendo/soiltestcorr/issues
License: MIT + file
URL: https://adriancorrendo.github.io/soiltestcorr/,https://soiltestfrst.org/,https://www.siildigitalagconsortium.com/
NeedsCompilation: no
Citation: soiltestcorr citation info
Materials: README, NEWS
In views: Agriculture
CRAN checks: soiltestcorr results

Documentation:

Reference manual: soiltestcorr.html , <soiltestcorr.pdf>
Vignettes: Introduction (source, R code) Shinyapp (source, R code) SoftwareX publication (source, R code) Bootstrapping (source, R code) Cate and Nelson (1965) (source, R code) Cate and Nelson (1971) (source, R code) Linear-plateau response (source, R code) Mitscherlich-type response (source, R code) Modified ALCC (source, R code) Quadratic-plateau response (source, R code)

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