AMENDMENT MAGNESIAN CAL is a mixture of Calcium carbonate with Magnesium Silicate, added with phosphoric rock. It serves as an inorganic soil conditioner.


Mineral Fountain Magnesium silicate (Mg6Si4O10H8), Calcium carbonate (CaCO3), Phosphoric rock
Use Inorganic soil conditioner
Elements that contribute Phosphorus (P2O5)-Calcium (CaO)-Magnesium (MgO)-Sílice (SiO2)-Boron (B)
Physical State Powder
Color Grayish
Alkalinity Positive
Maximum Humidity 5 %
ICA Registration N° 6396



Slow assimilation total phosphorus (P2O5) 3,0%
Total Calcium (CaO) 31,0%
Magnesium soluble in HCl (MgO) 12,0%
Silice (SiO2) 18,5%
Total Boron 0,025%



For the application of a suitable dose of Cal Magnesiana it is advisable to do a previous soil analysis. As a general rule it applies at a rate of 1.5 tonnes of product per hectare.

It should be applied at least 30 days before sowing to allow an efficient reaction in the soil. It is recommended to incorporate with rake.



Calcium (Ca) is involved in cell growth, absorption of nutrients, activity of enzymes, transport of carbohydrates and proteins. It is essential in the stability of the membranes providing greater consistency to the tissues, for example causes greater firmness in the stem of the plant. On the other hand, it acts favoring the structural stability of the soil, improving the porosity, the tillage, the nascencia, the irrigation, etc. A calcium deficit stops the growth of the plant and causes chlorosis, loss of chlorophyll.

The importance of Mg in plant life lies in its presence in the center of the chlorophyll molecule (without Mg photosynthesis could not be performed). It also acts as an activator of the metabolism of carbohydrates, fats and proteins and also intervenes in the transport of phosphates. Mg is a moving element within the plant and is absorbed from the soil as the Mg + 2 cation.

Silicon is absorbed by the roots in the solution as mono silicic acid Si (OH) 4 to be accumulated in the epidermal cells that impregnates them in a thin layer (2.5 μm) and when associated with pectins and polyphenols in the cell wall can be effective barriers to water loss, cuticular perspiration and fungal infections; However, as this acid accumulates in the form of silica, even though the effect is almost purely physical, it has been suggested that the association of silicon with the constituents of the cell wall makes them less susceptible to the enzymatic degradation that accompanies the penetration of the cell wall by fungal hyphae.

Under field conditions, silicon can stimulate growth (understood as the irreversible accumulation of dry matter, which is associated with processes of cell growth and elongation) and productivity by increasing the availability of elements such as P, Ca, Mg, K and B, counteracting the antagonism generated in soils with high saturation of aluminum and iron.

Cal Magnesiana is an amendment with basic characteristics that improves the chemical conditions of the soil, particularly the pH, correcting the active acidity of the same. Additionally, it presents conditions of stability and sustainability of soil pH over time, bringing short, medium and long term benefits to the soil.

Our product is strongly complexing of exchangeable aluminum (reserve acidity correction), in a very short period.




Our product is a physical mixture of Serpentine (Magnesium Silicate) and Calcium Carbonate agricultural grade for direct application to the soil, can be used as a source of Calcium, Magnesium and slow assimilation silica enriched with phosphorus, in addition to serving as soil conditioner . This document is designed to provide information necessary for the correct and efficient use of this product.