An environmental comparison of techniques to reduce pollutants emissions related to agricultural tractors

The results show that the SCR-equipped tractor reduced all the impact categories affected by NOX and particulate matter emissions (from −59% for acidification to −73% for marine eutrophication). However, the influence on Climate Change was much lower (−3%), mainly for the increase of Freshwater Eutrophication (due to the consumption of urea solution in the SCR, as well as to the consumption of tractor, and metal depletion for the higher mass of the tractor).