Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 

New tool for farmers to measure their GHG

29 November 2019


Options for farmers have now broadened when it comes to managing their greenhouse gas (GHG) footprint on-farm.

The recent inclusion of urease-coated urea fertilisers as an option in the nutrient budgeting tool OverseerFM means farmers will now be able to demonstrate the benefits of its use in reducing farm emissions.

Urease-inhibited urea fertiliser, such as Ravensdown’s N-Protect, has dual benefits. It decreases volatilisation losses, therefore increasing agronomic efficiency by retaining more nitrogen (N) in the root zone. The inhibitor slows down the action of the naturally occurring urease enzymes in soil, which in turn slows down the conversion of urea to ammonium ions and the consequent rise in soil pH around the dissolving granule. The rise in pH converts ammonium ions into ammonia gas (ammonia volatilisation). The secondary benefit is that less ammonia gas is lost to the atmosphere. A portion of the gas returns to the soil, some of which can be converted into the potent greenhouse gas nitrous oxide.

Farmers will eventually be responsible for their GHG emissions at a farm level, so the recent inclusion of urease inhibitors in OverseerFM means those who are using it will be a step closer to demonstrating the benefits of reducing their emission footprint.

While the greenhouse gas saving is small on a single application of urea basis, it’s the multiplier effect of how much urea is used in total per year in New Zealand. If all the urea that was used was inhibited, it would have the following effect on the total nitrous oxide evolution from New Zealand soils and pasture systems:

Reduce indirect N fertiliser losses of N2O by 6-7%
Reduce total agricultural N2O emissions by 1%
Save around $970,000 in national GHG liabilities, assuming 500,000 tonnes of urea is sold annually (coated with 250 ppm NBPT at application and a carbon price of $20 per tonne).

ENDS

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Fuels Rushing In: Govt "Ready To Act" On Petrol Market Report

The Government will now take the Commerce Commission’s recommendations to Cabinet...
• A more transparent wholesale pricing regime • Greater contractual freedoms and fairer terms • Introducing an enforceable industry code of conduct • Improve transparency of premium grade fuel pricing... More>>

ALSO:

Reserve Bank Capital Review Decision: Increased Bank Capital Requirements

Governor Adrian Orr said the decisions to increase capital requirements are about making the banking system safer for all New Zealanders, and will ensure bank owners have a meaningful stake in their businesses. More>>

ALSO:

Aerospace: Christchurch Plan To Be NZ's Testbed

Christchurch aims to be at the centre of New Zealand’s burgeoning aerospace sector by 2025, according to the city’s aerospace strategic plan. More>>

ALSO:

EPA: Spill Sees Abatement Notice Served For Tamarind Taranaki

The notice was issued after a “sheen” on the sea surface was reported to regulators on Thursday 21 November, approximately 400 metres from the FPSO Umuroa. A survey commissioned by Tamarind has subsequently detected damage to the flowline connecting the Umuroa to the Tui 2H well. More>>

Taskforce Report: Changes Recommended For Winter Grazing

A Taskforce has made 11 recommendations to improve animal welfare in intensive winter grazing farm systems, the Minister of Agriculture Damien O’Connor confirmed today. More>>

ALSO: