The NT
Department of Primary Industries has teamed with Queensland’s Department of
Agriculture to run a project called Climate Clever Beef.
The aim is
to determine whether there is a compelling business case for northern cattle
producers to engage with the Carbon Farming Initiative (CFI).
CFI is an
opportunity to generate cashflow by reducing emissions or increasing carbon
stocks, earning carbon credits from these changes and selling them to
businesses who want to offset or counterbalance their own emissions.
The methods
for measuring changes in emissions and carbon stocks are still developing. But
when methods are available, engagement is expected to be low until it can be
shown to make economic sense. This three year project aims to shortlist
potential carbon farming options; determine the conditions that they would be
commercially viable; and show how they could be integrated into a pastoral
business.
The project
will evaluate two broad options:
1. Improving efficiency to reduce
emissions from livestock; and
2. Carbon sequestration
Improving efficiency
Increasing
productivity is a big focus for businesses and for national food security. However,
increased productivity generally means increased emissions. To reduce emissions we will need to increase
efficiency.
Breeder
herd efficiency is low on large northern properties because it’s hard to get a
handle on the individual breeding performance of each cow. By improving identification
of poor breeders we can get rid of them and reduce emission per calf produced.
We can also
improve breeder herd efficiency with improved nutrition, effective weaning, improved
genetics and fertility, and better stocking rates.
Pastures in
northern Australia are low in nutrition and it takes longer for cattle to reach
slaughter weight. Improving live weight gain through supplementation, better
genetics, or by putting young cattle on better pasture can reduce age at
slaughter and life-time emissions.
Reduced
stocking rates will reduce emissions, and if this improves land condition and
nutrition for the remaining breeders, they become more productive as a result. Therefore,
overall calf production could be maintain or even increased.
Carbon sequestration
Carbon
sequestration can be achieved by reducing fire impacts or improving land
condition.
Burning
early in the dry season to reduce the extent and intensity of late dry season fires
can increase carbon sequestration and reduce total emissions from fire. However,
burning on pastoral properties is already relatively low, so increasing early
dry season burning could actually increase total emissions. Also, intense late
dry season fires are used to manage woody thickening that competes with
pastures. The current recommendation is to burn late in the dry once every four
years to reduce woody regrowth.
A better
option may be to stop grazing poor and uneconomical country and apply a sequestration
project to these areas.
Carbon can
also be stored in soil. Theoretically, improving land condition should increase
soil carbon, but the supporting science is light on. The project will
investigate this relationship, including the effect of different grazing
regimes.
For more
information, click here.
Acknowledgements: Dionne Walsh, NT Dept. of Primary
Industries & Fisheries.
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