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The overall aim of this programme of work is to identify and demonstrate that management strategies to reduce GHG emissions intensity already exist and that they are practical and cost effective.
The programme includes two objectives:
- GHG emissions on sheep and beef farms (aligned to P21 programme)
- GHG emissions on dairy farms (aligned to Beef + Lamb NZ environment focused farm programme)
Dr Robyn Dynes, AgResearch
Sheep & Beef work to identifying strategies to reduce GHGs
by NZAGRC Team
The NZAGRC team are working with two B+LNZ monitor farms. The farms now have substantial, robust data and baseline farm systems models which demonstrate the extent to which the key management decisions and efficiency drivers impact on current emissions intensity. The farms are at very different points in development cycle, so provide useful perspectives for informing the wider industry.
Practice-change scenarios have been modelled to predict emissions intensity for Onetai station, a coastal sheep and beef farm in the King country. Scenarios incorporating increased fertiliser use and finishing more stock on farm have predicted a 20 to 38% improvement in emissions intensity is possible.
Scenarios modelled for Highlands (South Canterbury) monitor farm demonstrate the potential for a win-win solution when the area sown in Lucerne and Tall Fescue is increased. This enables more lambs to be finished earlier and results in a large a large effect on lowering emissions intensity. This scenario is assessed as being readily adoptable by farmers.