Differences Between Dolomite, Kieserite and Agricultural Lime

Dolomite (CaMg(CO3)2)

Dolomite fertilizer is made from crushed natural rock so that nutrient availability for plants takes a relatively longer time than kieserite. The nutrient content of dolomite is 18-21% MgO and 30% CaO. The magnesium (Mg) content itself functions to form leaf chlorophyll and the calcium (Ca) content functions to strengthen cell walls. Dolomite is recommended as a regular fertilizer for oil palm plants. The functions of dolomite fertilizer for plants include:

1. Able to overcome the problem of soil acidity (increasing soil pH);

2. Able to reduce the level of soil poisoning caused by aluminum (Al) and ferum (Fe) in acid soil;

3. Activator of various types of plant enzymes;

4. Elements that form leaf color (chlorophyll)

Kieserite (MgSO4)

Kieserite is in the form of a salt molecule which is produced by factories in crystal form, so it is very soluble and the availability of nutrients for plants is faster. The nutrient content of kieserite is 26-39% MgO and 20-21% S. The element sulfur (S) content plays an important role in the formation of enzyme and protein functions.

The use of kieserite has the potential to lower soil pH so it is not recommended for peatlands, except in conditions of Mg deficiency (where the yellowing of the leaves is very severe), and this must also be supported by the addition of lime to increase the soil pH. Mg is a constituent of chlorophyll or a photosynthesis catalyst. It is best to use kieserite when in an urgent situation, namely when all the leaves exposed to sunlight are yellow (photosynthesis fails). The functions of kieserite fertilizer for plants include:

1. Increase chlorophyll so that the color of the leaves is more perfect green;

2. Plays an important role in the formation of root nodules;

3. Increase oil levels in oil-producing plants such as palm oil.

Agricultural Lime/Captan (CaCO3)

Kaptan is a white, fine powder. The nutrient content of kaptan is 85% Ca. Usually used as basic fertilizer in peat or tidal areas in large doses. The functions of kaptan for plants include:

1. Increase soil pH;

2. Increase the availability of nutrients in the soil;

3. Stimulates the population and activity of soil microorganisms