The term “Precision Farming” embraces a set of tools and technologies to analyse in-field soil and crop variability for improving farming practices and optimizing agronomic inputs. Remote sensing (Satellite, aircraft and UAV drones) is the most cost effective method for large scale monitoring, making use of Synthetic Aperture Radar and multi- or iper- spectral optical sensors considering visible, near infrared (NIR), short wave infrared (SWIR) and thermal bands.