QUEFTS

This sub-section has two chapters about the QUEFTS model. QUEFTS is a rule-based model to estimate crop yield given a few soil properties and the amount of fertilizer applied, or to estimate the amount of fertilizer needed to reach a particular yield. The first chapter provides an introduction to the basic ideas of the model, and the input and output. The second chapter shows how to use with spatial data on soil properties to make predictions for regions.