New Research Shows Good Farming Practices Reducing Nutrient Losses on Dairy Farms
Analysis of decades of research has revealed the good farming pracrtice plays a critical role in reducing nutrient losses to improve freshwater outcomes.
DairyNZ chair Tracy Brown said the new target range aligns closely with the recent Independent Methane Science and Target Review conducted by leading NZ scientists, including Professor Dave Frame and climate and farm systems expert Professor Nicola Shadbolt.
The review recommended that New Zealand cut biogenic methane emissions by 14-24% by 2050 to achieve no additional warming from 2017 levels, acknowledging the different effects of short vs long-lived greenhouse gases.
"It is important that the target range better reflects the latest science on methane's warming impact, while also acknowledging the practical realities farmers face on farm," says Brown.
"Farmers have already made progress, with agricultural emissions stabilising over the past decade through efficiency gains and environmental improvements. Methane emissions from dairy cattle are down 4.1% since 2017."
She says the announcement will provide certainty for farmers.
"We know that at the top end, 24% will be extremely challenging without new mitigation technologies. It's important there is accelerated investment in research and that tools to farmers are fast-tracked to ensure targets can be achieved over time.
"We are investing in solutions and work with sector partners such as AgriZeroNZ and the Ag Emissions Centre to tackle New Zealand's agricultural methane challenge through a combination of targeted investment, scientific innovation, and commercial partnerships.
"DairyNZ is continuing to power our science in this area. Our Emissions and Profitability project has shown how farmers can increase profitability and lower emissions by increasing homegrown feed and reducing purchased feed with high-embedded emissions.
"We are two years into the four-year Emissions4Pasture joint New Zealand-Ireland research programme, with early results suggesting cows grazing fresh forages emit less methane than currently estimated. By understanding the factors that influence methane emissions, we can ensure that any future methane mitigation work well in our pasture-based systems.
"Sustaining the viability of dairying, and agriculture in general, is critical to New Zealand's future prosperity," says Brown.
