Package: drisdiagnostics
Type: Package
Title: Diagnostic Systems for Plant Nutrient Analysis (DRIS, MDRIS,
        PASS)
Version: 1.0.1
Authors@R: 
  c(
    person(
      "Blesson B.", "Varghese",
      email = "blessonvarghese1234@gmail.com",
      role = c("aut", "cre")
    ),
    person(
      "Mubashir", "Sadiq V",
      email = "msvillakkan@gmail.com",
      role = "aut"
    ),
    person(
      "Deepthi", "C",
      email = "deepthichonat@gmail.com",
      role = "aut"
    ),
    person(
      "Sowmiya", "Saravanan",
      email = "sowmiyasaravanan24@gmail.com ",
      role = "aut"
    ),
    person(
      "Aparna", "Mohan V",
      email = "aparnamohan2023@gmail.com",
      role = "aut"
    )
  )
Description: 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>.
License: GPL-3
Encoding: UTF-8
RoxygenNote: 7.3.2
Imports: ggplot2, stats, rlang
Suggests: readxl, testthat (>= 3.0.0)
Config/testthat/edition: 3
Depends: R (>= 3.5)
LazyData: true
NeedsCompilation: no
Packaged: 2026-09-26 23:07:14 UTC; root
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@gmail.com>
Repository: https://cran.r-universe.dev
Date/Publication: 2026-09-26 17:00:16 UTC
RemoteUrl: https://github.com/cran/drisdiagnostics
RemoteRef: HEAD
RemoteSha: 5e4550d38ded05e4933374a3b433c675c6008131