Developing and testing of pedogenons in the lower Namoi valley, NSW, Australia

•Pedogenon classes are created by K means clustering on soil forming factors.•Pedogenons define unique soils and characterise the pedodiversity of the study area.•Soil properties of genosoil and phenosoil are predicted using VisNIR spectra.•The result shows that genosoils had twice the variation of phenosoils.