An implementation of the QUEFTS (Quantitative Evaluation of the Native Fertility of Tropical Soils) model. The model estimates nutrient requirements for crops to achieve a target yield given native soil fertility, as estimated from a few soil chemical properties. 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.
|Author||Robert J. Hijmans [cre, aut], Joost Wolff [ctb]|
|Maintainer||Robert J. Hijmans <[email protected]>|
|License||GPL (>= 3)|
|Package repository||View on CRAN|
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