drisdiagnostics: Diagnostic Systems for Plant Nutrient Analysis (DRIS, MDRIS, PASS)

Provides implementations of the Diagnosis and Recommendation Integrated System (DRIS), the Modified DRIS (MDRIS), and the Plant Analysis with Standardized Scores (PASS) approaches for nutrient diagnosis in crops. These methods allow quantitative evaluation of nutrient imbalances using ratio-based indices and standardized scores, supporting improved fertilizer use efficiency and crop management decisions. The DRIS method is described in Walworth, J.L. and Sumner, M.E. (1987) <doi:10.1007/978-1-4612-4682-4_4>. The MDRIS approach is detailed in Beverly, R.B. (1987) <doi:10.1080/01904168709363672>. The PASS method combining DRIS and sufficiency ranges is presented in Baldock, J.O. and Schulte, E.E. (1996) <doi:10.2134/agronj1996.00021962008800030015x>.

Version:	1.0.1
Depends:	R (≥ 3.5)
Imports:	ggplot2, stats, rlang
Suggests:	readxl, testthat (≥ 3.0.0)
Published:	2026-09-26
DOI:	10.32614/CRAN.package.drisdiagnostics (may not be active yet)
Author:	Blesson B. Varghese [aut, cre], Mubashir Sadiq V [aut], Deepthi C [aut], Sowmiya Saravanan [aut], Aparna Mohan V [aut]
Maintainer:	Blesson B. Varghese <blessonvarghese1234 at gmail.com>
License:	GPL-3
NeedsCompilation:	no
Materials:	README
CRAN checks:	drisdiagnostics results

Documentation:

Reference manual:

drisdiagnostics.html , drisdiagnostics.pdf

Downloads:

Package source:	drisdiagnostics_1.0.1.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries:	r-release (arm64): drisdiagnostics_1.0.1.tgz, r-oldrel (arm64): drisdiagnostics_1.0.1.tgz, r-release (x86_64): drisdiagnostics_1.0.1.tgz, r-oldrel (x86_64): drisdiagnostics_1.0.1.tgz

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