Limestone quality is defined by its Effective Neutralising Value (ENV). This is a measurement of the neutralising value and the fineness of grind.
The Neutralising Value of limestone is determined by it calcium carbonate (CaCO3)equivalent - the higher the value the greater the limestones ability to neutralise soil acidity.
The Fineness of grind determines the rate of reaction - finer limestone will neutralise soil acidity faster. Sieve Analysis results determine grind fineness.
74.5% of AB Lime - Feb 2017 will be utilised in 1 year with a return from expediture of 76.8%.
* Calculations based on data from Soil Quality Australia and from Cregan et. al 1989
^ Takes into account CaCO3 % of source rock
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