Free Soil Test Upgrades
Basic to Comprehensive on us.
Soil & herbage testing is the backbone to any successful fertiliser program.
Trusted local expertise
Experience matters
Our nutrient advisers bring over 58 years of combined local experience.
Proven Results
Better soil, better plants, better stock
The results we help farmers achieve, speak for themselves.


Your Nutrient Management Partner


Here For You

Mainfert prides itself on focusing on the client, the farming system, the soil and the long term. We like to think of ourselves as providing solutions to a whole range of challenges facing today’s primary producers.

There is no “silver bullet” product out there – just good innovative advice based on research and experience. Whether your farming system is more traditional, or you are moving to a more regenerative and biological system, we will meet your soil, pasture and animal need.

Many will know us as Mainland Minerals and with over 30 years supplying nutrient solutions to South Island farmers we rebranded to Mainfert mid 2020 to better reflect what we do and who we are.

We want to help farmers to achieve their financial and environmental goals through their biggest asset, their soil. We have a unique range of fertilisers and Mainfert prides itself on focusing on the client, the farming system, the soil and the long term.

Complete the form and enjoy Two FREE comprehensive soil test upgrades on us*.

Book your soil tests before 31 August 2020 and you’ll receive two free soil test upgrades from basic to comprehensive, on us. Saving  $298 + gst.   Basic soil test $86* & Comprehensive soil test $235* 

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*T&C’s apply.  All soil tests must be completed before 20 December 2020. All pricing GST exclusive. Two upgrades maximum per client and limited to one upgrade for lifestyle blocks 5-50ha.

Our Customised blend of


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