<p>Nitrous oxide is a much more powerful greenhouse gas than methane - 298 times more powerful than carbon dioxide over a 100 year timeframe on a per tonne basis.&nbsp; See <strong><a href="faq-1,listing,330,what-is-global-warming-potential.html"><u><span style="color: #0066cc;">What is Global Warming Potential?</span></u></a></strong></p>
<p>Fortunately, the absolute amount of nitrous oxide emitted from agriculture is lower than methane. In New Zealand, most nitrous oxide is produced&nbsp;by the action of&nbsp;soil&nbsp;bacteria in urine patches in paddocks.&nbsp; Smaller amounts&nbsp;come from dung deposited during grazing, stored manures spread back onto pasture, and from nitrogen fertilizer.&nbsp;</p>