Cal-Mag

Supplying locally produced Ag-Lime to the Wide Bay since 1990.

What is Cal-Mag?

Cal-Mag is a carbonate mineral primarily compromised of Calcium and Magnesium.

Our Cal-Mag is the perfect fertiliser for raising the pH level of soils and provided a boost of magnesium. If your soil has a low pH, and you're growing crops that require high levels of magnesium to grow significant yields, then our Cal-Mag is right for you.

The Composition of Our Cal-Mag


  • 18.85% Calcium
  • 8.68% Magnesium
  • 8.01% Silica
  • .93% Iron
  • .03% Phosphorous
  • .27% Potassium
  • .05% Manganese
  • 31 ppm Zinc
  • 9 ppm Copper
  • .27% Sodium
  • .08% Sulphur
  • 7 ppm Cobalt
  • 10 ppm Boron
  • .5 ppm Selenium
  • 80.6 Neutralising Value

* This list is a typical representation of the composition of our Cal-Mag, mined in the State Forest in Booyal, Australia

The benefits of using Cal-Mag

marule tick

Supplies both Calcium and Magnesium to the soil while also having a neutralising value.

marule tick

Can be mixed according to the percentage of Magnesium that your crop requires - We mix the CalMag using Marule Ag-Lime and Magnesium supplied by QMAG.

marule tick

Corrects Calcium and Magnesium deficiencies and any acidifying issues associated with most soil fertilisers

Spreading Services Available


We're also available to spread Ag-Lime onto your soil, making your Ag-Lime purchase even easier. Check out our spreading service page for more details.

MORE DETAILS

If you're in the market for quality Cal-Mag, get in touch with us to see how we can help.