Study shows organic fertilizer replacement cuts agricultural emissions

A study published in Nature Communications found that replacing synthetic fertilizer with organic sources, such as manure, crop residues, and biochar, reduces nitrous oxide emissions by an average of 21.8% and ammonia emissions by 40.6%. The research, conducted by researchers from the University of Reading and Northwest A&F University, analyzed 2,235 comparisons from 210 experimental sites globally. The findings suggest that the coordination of nitrogen cycle processes—including mineralisation, immobilisation, nitrification, and denitrification—is key to achieving these reductions.

The research provides a technical pathway for farmers to reduce potent greenhouse gas emissions and air pollution associated with agriculture. By improving the synchrony of nitrogen processes in the soil, the study offers methods for mitigating environmental impact while maintaining agricultural output.