The variable rate technology tested by VITISOM includes continuous monitoring activities. In particular, the distribution performance of organic fertilizer is being verified at the Castello Bonomi Tenute in Franciacorta company which has measured the correct spreading according to the prescription map. The activity led by Davide Facchinetti, a researcher at the Department of Agricultural Mechanics of the University of Milan, involved Bonfiglio Platè from the TEAM group, a company that provides software and precision sensors. The tests gave positive results and confirmations of the validity of the prototype.