The NitriKlim joint project is investigating the effect of various nitrification inhibitors (NI) under German cultivation conditions. NIs are chemical additives that are used in agricultural nitrogen fertilization. They reduce the microbial conversion of ammonium to nitrate (nitrification), which, according to global studies, should reduce nitrous oxide emissions and nitrate leaching. NI could therefore be a possible measure for reducing greenhouse gases and nitrogen losses in agriculture. In the NitriKlim project, these aspects are being investigated under German climate and soil conditions in field and laboratory trials. The annual nitrous oxide emissions and nitrate leaching, yields and quality in cereal and vegetable cultivation, the effects of long-term NI application and possible negative environmental impacts, and an economic evaluation of NI use are being considered and carried out.

Funded by the Federal Ministry of Agriculture, Food and Home Affairs (BMLEH).