Fertiliser Assn signs 30-year commitment to Winchmore long-term fertiliser trials

The Fertiliser Association of New Zealand has signed a 30-year lease with AgResearch to ensure the continuation of the long-term fertiliser research trials at Winchmore Research Station in Canterbury.

The agreement affirms the association’s ongoing commitment to long-term research on fertiliser use.

“The site has been providing extremely useful information for almost 70 years now,” says Vera Power, Chief Executive of the Fertiliser Association of New Zealand.

“This has allowed us to track changes to pastoral land as agriculture evolves and support our evidence base for sustainable management.

“I could see Winchmore potentially following the development of New Zealand agriculture over centuries – that’s a really exciting prospect.”

As the longest fertiliser trial under pasture in New Zealand, the Canterbury Plains site has already seen many changes in farming practices. Focused on sheep-grazed pasture, it was initially established to analyse the long-term response of pasture to irrigation and the superphosphate requirements of irrigated pasture.

But the consistent management, meticulous record keeping and archiving of regular soil and plant samples have also proved a rich source of material for many other studies, from nutrient cycling to the effects of fertiliser use on earthworms.

“The historical data and ongoing fertiliser treatments have been critical to evaluating and understanding the implications of soil contaminants such as cadmium and fluorine accumulation,” says Vera.

“Nobody anticipated these contaminant issues when the trial sites were established.”

Many of the key considerations being examined over the long term, such as impact on soil health and function, soil organic matter and climate change considerations, cannot be reproduced elsewhere under actual field conditions.

AgResearch chief executive Tom Richardson says more than 500 science publications have drawn on research from the Winchmore site since the long-term trials began.

“The trial site at Winchmore is nationally significant, and has over the decades provided our scientists and others with an important resource to collect and analyse data around fertiliser use, soil health and farming practices,” he says.

“This work has added to our understanding and helped improve farming practices in New Zealand. It’s pleasing for us to be able to commit to ongoing trials at Winchmore that will allow us to keep adding to the science to ensure continued improvement and innovation.”

This year Winchmore’s irrigation system has moved from a border dyke to a centre pivot system. This included the installation of five new pivot irrigators, two new linear irrigators and connection to the irrigation scheme. Researchers will be able to monitor the impact of the new system over time.

Issues such as the impact of fertiliser use on soil carbon or soil health are now coming to the fore, says Vera.

“We are increasingly thinking about the long-term sustainability of New Zealand farming systems – and long-term field trails are critical for helping us understand how our actions could impact on future farmers’ choices.

“We don’t know where agricultural technology will take us next. But we do know that we’ll be there, measuring its effects so that future generations can make the best possible choices.”

Source:  AgResearch

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Science boost for Overseer farm management tool

The Coalition Government and the primary sector will work together to boost the science behind the valuable Overseer farm management tool, Agriculture Minister Damien O’Connor and Environment Minister David Parker announced in a Budget press statement.

Overseer is a tool used by a range of primary industries and regional councils to help measure nutrient use and greenhouse gas emissions.

“Well-used, it can assist farmers to minimise waste and maximise profits,” says Mr O’Connor.

The Budget includes an investment of $5 million of operating funding over the next four years to enhance it.

The extra funding for Overseer will enable:

• quicker adoption of environmentally friendly farm practices

• the inclusion of a wider range of land types and farming systems

• a more user-friendly interface.

“All farmers and growers want to keep their fertilisers on their paddocks and crops, and they want the best tools to manage their environmental responsibilities,” Mr O’Connor says.

Mr Parker says the extra funding in the Budget opens up opportunities for farmers to trial new technologies, techniques and tools that would otherwise be too risky or expensive to try.

“We need practical, science-backed tools to achieve this Government’s goals to improve land use, achieve a net-zero-emissions economy by 2050, and help clean up our rivers so our kids can swim in them without getting crook.”

The Ministry for Primary Industries, AgResearch and the Fertiliser Association of New Zealand each hold one-third stakes in the Overseer intellectual property.