Quantitative Evaluation of the Native Fertility of Tropical Soils R package Rquefts version 1.2-8 CRAN Task View: Agriculture (https://CRAN.R-project.org/view=Agriculture) 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. Software Imports: meteor, methods, Rcpp (>= 0.12.4) LinkingTo: Rcpp Suggests: terra, limSolve Robert J. Hijmans <r.hijmans@gmail.com> Comprehensive R Archive Network (CRAN) Robert J. Hijmans [cre, aut], Pieter Pypers [ctb, aut], Joost Wolff [ctb] GPL (>= 3) 2026-03-17 application/tgz https://CRAN.R-project.org/package=Rquefts doi:10.32614/CRAN.package.Rquefts