The Bulletin Nitrates regulates in a binding manner thunderstorms prohibitions of use of manure, sludge and materials similar to them, sludge, sewage and other organic and nitrogen fertilizers, in the months of November and February throughout the territory of Lombardy.

The Bulletin Nitrate is based on the estimated information of the Meteorological Service of ARPA Lombardia and the agro-environmental and management observations acquired from the territory in collaboration with the Farmers Organizations and evaluated by ERSAF and DG Agriculture.