Quantitative Evaluation of the Native Fertility of Tropical Soils
Batch QUEFTS model predictions
Optimal fertilizer application
Helper functions to go from fertilizers to nutrients
Soil nutrients supply for QUEFTS model
Spatial QUEFTS model predictions
QUEFTS model
biomass parameters
Crop parameters
fertilizer parameters
soil parameters
Estimate soil nutrients supply
tools:::Rd_package_title("Rquefts")
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.