Feeding the world’s growing population

New Zealand’s reputation as a quality food producer is growing.

Optimising food production

Over the next 50 years farmers around the world will need to produce more food than has been grown over the past 10,000 years.

Best use from a limited resource

Fertiliser helps farmers produce food efficiently by replenishing the soil. But fertiliser needs to be used responsibly.

Responsible and sustainable nutrient management

The Fertiliser Association invests in research and tools to ensure farm profitability while minimising nutrient losses to the environment.

The Fertiliser Association of New Zealand promotes and encourages responsible and scientifically-based nutrient management.

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Measuring the impact of soil fluorine

Thangavelautham Geretharan (Gere) is pioneering research in an aspect of soil health that has largely been ignored until now – fluorine’s impact on nitrogen-fixing bacteria.

The Sri Lankan PhD student says he was interested in measuring its effect, given nitrogen-fixing bacteria are a fundamental part of New Zealand’s legume-based pastoral farming system.

“Phosphate fertiliser is ordinarily added to New Zealand pastures and fluorine is an impurity of this fertiliser. When superphosphate fertiliser is added continuously the fluorine content of the soil increases. I wanted to investigate whether soil fluorine has a detrimental effect on nitrogen-fixing bacteria. I also wanted to see what impact soil fluorine has on living organisms in the soil.”

Nitrogen is essential for the growth of plants. Nitrogen-fixing bacteria are microorganisms present in the soil or in plant roots that change nitrogen gases from the atmosphere into nitrogen compounds that plants can use in the soil.

Gere’s research builds on a new and simple total fluorine measurement method, sodium hydroxide extraction, which was commissioned by the Fertiliser Association and developed by Jeyakumar and Anderson in 2015. “I found that sodium hydroxide extraction is a suitable method for determining the total soil fluorine content,” says Gere. “I also used calcium chloride and water extraction to measure the amount of the total soil fluorine that is actually available to affect living organisms.”

Gere focused on measuring the toxic effects of fluorine on nitrogen-fixing bacteria and its interaction with white clover – a widely cultivated pasture legume in New Zealand.

“Encouragingly, my research so far seems to indicate no imminent risk from soil fluorine on nitrogen-fixing bacteria. I also found that the fraction of the soil fluorine content that is potentially affecting the living organisms is very small in New Zealand agricultural soil.

“Once I’ve completed the research, my findings will be very useful for developing fluorine guidelines for New Zealand agricultural soil.”

Gere commenced his PhD in April 2016 under the supervision of Professor Christopher W.N. Anderson, Dr Paramsothy Jeyakumar (Jeya) and Dr Michael Bretherton through the School of Agriculture and Environment at Massey University. His research is funded by the Fertiliser Association of New Zealand.

The Fertiliser Association of New Zealand and Dairy NZ funded development of the Nutrient Management Adviser Certification Programme (NMACP). This industry-wide certification aims to ensure that advisers have the learning, experience and capability to give sound nutrient advice.

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15 March 2023

The Fertiliser Association of New Zealand has published a revised and updated Code of Practice for fertiliser nutrient management, replacing the previous version published in 2013.

The Code was launched at an event in Wellington on 13 March 2023, attended by the Minister of Agriculture, Hon Damien O’Connor.

Minister O’Connor welcomed the publication of the Code, saying it was important good guidance is available for all farm inputs for farmers and the wider sector.

He described farming – producing food for communities and the world – as the most noble of professions. Farmers were dealing with challenges every day and providing them with tools and knowledge was important, he said.

The Code is a key resource tool for the management of nutrients on arable and pastoral farms, horticulture and viticulture blocks, and market gardens.

Association Chief Executive Vera Power says the revised Code provides clear principle-based guidance on supplying nutrients for growing healthy food and fibre.

“Following the Code provides users, regulatory authorities and markets confidence that the nutrients used in Aotearoa New Zealand primary production are managed in a way that minimises adverse environmental impacts,” says Dr Power.

“We believe all New Zealand farmers and growers want to meet societal and their own high expectations for growing healthy food while minimising environmental impacts. Supporting all our aspirations remains at the heart of the guidance provided by this Code.”

The revised Code has had extensive input from  agricultural and scientific experts, regulators and industry groups. It can be downloaded from the Association website at www.fertiliser.org.nz

7 September 2022

The 2022 AgriTechNZ Baseline of Digital Adoption in Primary Industries report was released in August.

Created as part of a study by AgriTechNZ and insights partner Research First, the report was co-designed with partners The Fertiliser Association of New Zealand, Zespri, The Foundation of Arable Research and DairyNZ. It was also supported by the Ministry for Primary Industries as part of the Sustainable Food and Fibre Futures initiative (SFFF).

The 60-page report looks at digital adoption, including key drivers and barriers across the dairy, horticulture, arable and beef/sheep sectors.

You can download the report here.

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