Pedotransfer Functions for Brazilian Soils

The growing need for PTFs frequently leads to the use of inadequate PTFs and databases, especially when dealing with data from different regions or climates, such as in tropical and temperate climate zones. Most PTFs have been developed for soils from temperate climates, which tend to be very different from tropical soils. In fact, PTFs are not suitable for extrapolation: they should not be applied to soils that are outside the range or region where the PTFs ware developed. In this chapter the current status of PTF development in Brazil is reviewed, and suggestions for research aiming future improvements are made.