Rquefts: Quantitative Evaluation of the Native Fertility of Tropical Soils

An implementation of the QUEFTS (Quantitative Evaluation of the Native Fertility of Tropical Soils) model. The model (1) estimates native nutrient (N, P, K) supply of soils from a few soil chemical properties; and (2) computes crop yield given that supply, crop parameters, fertilizer application, and crop attainable yield. See Janssen et al. (1990) <doi:10.1016/0016-7061(90)90021-Z> for the technical details and Sattari et al. (2014) <doi:10.1016/j.fcr.2013.12.005> for a recent evaluation and improvements. There are also functions to compute optimal fertilizer application rates.

Version:	1.2-8
Imports:	meteor, methods, Rcpp (≥ 0.12.4)
LinkingTo:	Rcpp
Suggests:	terra, limSolve
Published:	2026-03-17
DOI:	10.32614/CRAN.package.Rquefts
Author:	Robert J. Hijmans [cre, aut], Pieter Pypers [ctb, aut], Joost Wolff [ctb]
Maintainer:	Robert J. Hijmans <r.hijmans at gmail.com>
BugReports:	https://github.com/cropmodels/Rquefts/issues
License:	GPL (≥ 3)
URL:	https://CRAN.R-project.org/package=Rquefts
NeedsCompilation:	yes
Materials:	NEWS
In views:	Agriculture
CRAN checks:	Rquefts results

Documentation:

Reference manual:

Rquefts.html , Rquefts.pdf

Downloads:

Package source:	Rquefts_1.2-8.tar.gz
Windows binaries:	r-devel: Rquefts_1.2-5.zip, r-release: Rquefts_1.2-5.zip, r-oldrel: Rquefts_1.2-5.zip
macOS binaries:	r-release (arm64): Rquefts_1.2-5.tgz, r-oldrel (arm64): Rquefts_1.2-5.tgz, r-release (x86_64): Rquefts_1.2-5.tgz, r-oldrel (x86_64): Rquefts_1.2-5.tgz
Old sources:	Rquefts archive

Linking:

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