Andre Marcelo de Souza
Embrapa, Brazil
Posters & Accepted Abstracts: Trends in Green chem
A new methodology for soil analysis fertility based on the use of vibrational spectroscopy and Chemometrics has been developed and validated. This methodology employs Near Infrared Spectroscopy (NIRS) and multivariate calibration for the quantification of several soil fertility attributes such as Soil Organic Matter (SOM), silt, clay and sand. Current methods for evaluating these parameters are still based on wet chemistry methods which are time consuming and also generate residues that require additional treatment to be disposed of in nature. Due to the growth of precise agriculture there is a huge demand for analytical methods that can provide simple, fast, environmentally friendly and precise diagnosis for soil fertility. The growing interest in NIRS technology can be justified by the numerous and remarkable benefits that NIRS spectroscopy offers over conventional analysis: (i) it is a non-destructive technique, (ii) it is free from undesirable residues and thus has minimal environmental impact, (iii) it is a low-cost technique and (iv) it is a rapid and innovative technique that requires little sample handling when combined with Chemometrics. In this lecture, the methodology which is based on a huge spectral and analytical soil data bank representative of the Brazilian territory will be presented.
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