<p>There are options that already exist for farmers to lower their farm emissions while sustaining outputs.&nbsp; But there are also many potential &lsquo;silver bullet' technologies that have been in the headlines recently and it's time to look at the on-farm mitigation potential of these.&nbsp; We also need to be cognisant of what New Zealand's agricultural greenhouse gas emissions may be in 2030 if new mitigation solutions are developed.</p>