Meet our consultants

Don Hart (CEO)

Biological Farming & Soil Fertility Consultant

Mobile: 027 432 0187

Originally a farmer from Waimate, South Canterbury purchased the home farm Springfield Estate in 1985. Don has always been one to drive production and strives for the best, found himself applying more and more N, P, & K only to find that the yields remained very much the same.

Don set out on his journey to increase his production and he found the Albreicht System at an Acres USA conference 1993. He come home thinking this is too good to be true! Since then he has applied this approach on his home farm and has travelled the world continuously learning from experts like Neal Kinsey – Albrecht Consultant.

The home farm has made tremendous gains on what it was producing and often out competes other farms. He has proven the theory’s learnt on trial farms and his clients farms, with a range of managers over a range of seasons finding that the system is more profitable and sustainable than the conventional synthetic N, P, & K approach.

Don is passionate about regenerative farming with the use of the natures biology and fertilisers that help the biology and plant thrive, resulting in a very environmentally friendly, high quality and high yielding crop and animal products.

Duncan Humm

Blending Store Manager


Duncan Humm came across the Albrecht system in his pursuit to better their intensive venison and velvet operation at Mt Somers. He has completed the Introductory and Advanced Biological Soil Fertility Courses with Albrecht Consultant Neal Kinsey.

Duncan has seen improvements in carcase weight, velvet weight and reproduction targets since applying the Albrecht system.

In 2012 Duncan started working for Top Soils and his role includes mixing the fertiliser blends, consulting with clients, and organising the in and out of all the various fertilisers and coordinating the day to day logistics. Duncan is an excellent operator and enjoys an efficient and smooth-running store.

James McCann

Biological Farming & Soil Fertility Consultant

MSc Arable Crop Management & BSc Agriculture

Mobile: 027 381 8856

James joined the Top Soils team from the UK, where he worked as a Crop Nutritionist in Gloucestershire. His time was spent soil sampling and advising farmers on the use of calcified seaweed based fertilisers and soil/plant biostimulants.

With a keen interest for phosphate availability and metabolism, James encourages his farmers to learn more about their own soil’s fertility and biological ways to improve.

James has completed the Introductory and Advanced Biological Soil Fertility courses with Albrecht consultant Neal Kinsey.

Sally Sim

Biological Farming & Soil Fertility Consultant

BSc Agriculture with Land & Farm Management

Mobile: 027 321 3030

Sally has over 12 years’ experience working as an agronomist and consultant in NZ, including working for Top Soils as a consultant before she took a break to start a family.

After graduating Sally spent number of years working in non-organic and then organic Vegetable production in the UK, before heading out to pursue an agronomy career in NZ. The experiences working in organic and non-organic farming systems gave her an insight into a more holistic approach to crop production.

Sally and her husband have a mixed cropping and lamb finishing farm in Mid Canterbury. They themselves apply the Albrecht system to their own farm achieving positive results.

Sally has completed the Introductory and Advanced Biological Soil Fertility courses with Albrecht consultant Neal Kinsey.

Neal Kinsey – Kinsey Agricultural Services Inc

Neal Kinsey established the Kinsey Agricultural Services Inc in 1977. A company specialising in soil fertility and providing sound advice on fertilising.

The systems Neal uses for soil fertility were learnt during training under Dr William A. Albrecht. Neal began consulting and teaching this program to other soil consultants, including Don Hart from Top Soils Ltd. Kinsey Ag Services Inc is now a global company with clients and consultants spread over 65 countries including Germany, Canada, Switzerland, Australia and New Zealand.