Understanding the geological makeup of the land is quite important. It maybe more so in Australia than other countries due to age of the soil.
Very few places in the world would we describe “recent volcanic soil” as being between one and two million years old. The Qvp and Qvg rated land is such “recent” soil that sits above the older 350 million year clay below it.
Why a land holder should focus on ensuring soil health and returning nutrients to the land becomes obvious when considered in this light, as the mineral nutrients have been supplying plants for millions of years and are not being replaced by new geological activity.
To a smaller degree, this is no different in one’s own backyard, and is one of the secrets to strong healthy soil – which in turn produces strong and healthy vegetation.