Outcome of the 1st International Biological Nitrification Inhibition (BNI) Workshop

JIRCAS. 2015. Outcome of the 1st International Biological Nitrification Inhibition (BNI) Workshop.

Suppressing soil nitrification and increasing NUE is critical to reversing the N-fertilizer overuse and minimizing its environmental impact. Global nitrogen (N) fertilizer consumption has increased >10-fold since 1960s, but food grain production has only tripled during this period, resulting in a decrease in nitrogen-use efficiency (NUE). Of the 150 million tons of N-fertilizer currently applied to agricultural systems globally, up to 70% is not recovered by the crop and often results in negative environmental impact through pathways such as nitrate-leaching and nitrous oxide emissions1. Nitrate is an important groundwater pollutant and nitrous oxide (N2O) is a powerful greenhouse gas. Annual economic losses from lost N-fertilizer is estimated at 90 US$ billion. If this trend continues, annual N-fertilizer application will double by 2050 and global N2O emissions from agriculture will reach 19 million tons of N y-1 by then.