The Plan for the Agronomic Use of Digestate (P.U.A) was devised to regulate the presence of zootechnical nitrogen in digestate, with the aim of safeguarding underground and surface waters from pollution caused, first and foremost, by the nitrates present in waste water. What limits are imposed by the P.U.A.? There are several factors to consider: the type of area in which the terrain is located (vulnerable to nitrates or not), the type of digestate (whether of zootechnical origin not) and the farm’s land surface availability. Find all the details in this interview with Guido Bezzi of the CIB