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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Potassium requirements of pastures on North Island east coast hill country in New Zealand

Jeff D. Morton, Allan Gillingham, Maurice Gray
Completed 2017


The effects of potassium (K) (0–160 kg/ha/yr) on soil and pasture were measured in five small plot mowing sites on flat and easy slopes in Hawkes Bay hill country from 2004 to 2007. Initial soil QT K levels ranged from 1.6 to 3.8 at each site and increased to a range of 3.5–11.3 at the highest rate of K in the third year. At most sites, clover cover on some occasions increased up to the highest rate of K. Despite this increase, there was only one significant response in pasture production to K at one site in the third year. Possible reasons for the lack of a total DM production response to K application were more grass growth compensating for less clover growth at the nil and lower rates of K or insufficient transfer of nitrogen from the clover to grasses at higher rates of K.

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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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1 March 2024

The Fertiliser Association of New Zealand recently updated its Fertiliser Use on New Zealand Dairy Farms booklet to ensure farmers get the best value from fertiliser applied and to align the advice with the Code of Practice for Fertiliser Nutrient Management.

28 June 2023

Dairy farmers milking cows on a farm area of more than 20 hectares are required to record synthetic nitrogen use on their dairy platform land, including a zero-kg record if no synthetic nitrogen is used. The regulations require data to be submitted by 31 July each year for the preceding year ended 30 June. 

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