Reducing nitrogen footprint of Portuguese wine

Nitrogen (N) is a key nutrient in vineyard management. The efficient use of N as fertilizer was tested in several field experiments to produce wine of low N-footprint.

Agriculture practices different from the conventionally used in each vineyard partner were implemented to achieve higher production and product quality versus lower N inputs. Different N fertilizer management applied in the field found no significant differences in fresh grapes productivity and quality of the wine produced. The N-Footprint tool will confirm the efficacy of the new management procedures and validate the wine of low N-footprint.