Prediction of total carbon, total nitrogen, and pH of organic materials using visible near-infrared reflectance spectroscopy

Abstract

We used visible near-infrared reflectance spectroscopy (VNIRS) to characterize a set of organic materials (n = 75). Good predictions for total carbon, excellent predictions for total nitrogen, but poor predictions for pH were found. This preliminary study showed that VNIRS could rapidly characterize organic materials before soil application.