Dolomite
Double calcium–magnesium carbonate for scenarios where both elements are needed.
- Family
- Carbonate mineral
What it is
Dolomite
Natural mineral formed by double calcium-magnesium carbonate (CaMg(CO₃)₂), processed by milling and classification. In agriculture it is used mainly as a liming amendment in acid soils, with the added benefit of supplying magnesium.
What it delivers
- Corrects acidity and raises pH, like limestone.
- Supplies calcium and magnesium in a single material.
- Useful where analysis shows low magnesium or an unbalanced Ca/Mg ratio.
- Improves base saturation of the exchange complex.
- Progressive effect: depends on grind fineness, rate, moisture and incorporation.
Applications
Applications
- 01
Acidity correction with simultaneous calcium and magnesium supply.
- 02
Acid soils with magnesium deficit confirmed by analysis.
- 03
Crops with high magnesium demand.
- 04
Base saturation improvement and liming programmes.
How it works
How it works
As a carbonate, it neutralises acidity and releases calcium and magnesium to the exchange complex. It is neither instant nor universal: in alkaline soils or soils with excess magnesium it may be unsuitable, so any recommendation must come from a soil analysis.
- 01
CaMg(CO₃)₂
Gradual dissolution in acid soils
- 02
H⁺ → H₂O + CO₂
Acidity corrected and pH rises
- 03
Ca²⁺ + Mg²⁺
Calcium and magnesium supplied together
- 04
Mg / Clorofila
Magnesium for chlorophyll synthesis
Frequently asked questions