The Probitas System was developed by farmers for farmers
Ewan Campbell is a typical ‘kiwi bloke' who grew up on his father's dairy farm near Te Aroha and became thoroughly familiar with what constitutes poor and deficient land. He bought a property near Waihi and began farming on what was initially very depleted soils holding some of the highest aluminium levels of any soils in the world according to Brookside Laboratory. During sixteen years of observations and trials Ewan developed an eco-safe and sustainable system of farming based on complete mineral and biological balance. He also undertook a period of study of soil testing methodology with Brookside Laboratory from the United States.
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