Natural gypsum and natural anhydrite as fertiliser
(calcium sulphate)

We bulk deliver our calcium and sulphur-rich sulphate fertilizer, Minerosul 40®.
Based on a natural blend of gypsum and anhydrite, our Minerosul 40® fertilizer is supplied as minigranules (0-2 mm). It is easy to apply using a fertilizer spreader. Gypsum is a natural mineral that does not modify the pH of soil. Calcium serves as an essential building block for creating bridges between clay and humus (clay-humus complex), thereby improving soil structure. As for sulphates, they are absorbed by plants directly, providing them with the sulphur they need.

Sulphur and plant health:

• Sulphur is a key plant nutrient
• Sulphur is essential for the synthesis of sulphur-containing amino acids, such as cysteine and methionine, and therefore vital for protein biosynthesis in general
• Sulphur helps boost the efficiency of nitrogen use
• Sulphur is important in the formation of sulphur-containing secondary plant metabolites (such as glucosinolate in oilseed rape)
• Sulphur is a component of vitamin B1 (component of cereal grains, legumes)
• The symbiotic nitrogen fixation process requires a sufficient supply of sulphur

Sulphur deficiency in plants means:

• Plants cannot use nitrogen efficiently

• Nitrogen circulation within plants is blocked

• The nitrogen-to-sulphur ratio and nitrate levels in plants increase

• Lower nodulation and nitrogen fixation rates in plants

The role of sulphur in the soil:

• Sulphur is generally available in organic form in the soil

• After mineralization, sulphur is generally absorbed as a sulphate ion(SO₄ ²), which is water soluble and leaches in soil, like nitrates prone to leaching, similar to nitrates

• The capillary action pushing water up from the subsoil can increase sulphate levels around plant roots (in deep soils, e.g. loess and loam soils)

• A blend of natural gypsum and anhydrite such as that found in our Minerosul 40® fertilizer releases part of its sulphate content quickly, and the rest more slowly over time.

Where sulphur deficiency occurs:

• In lighter soils and shallow soils, especially during periods of heavy rainfall

• In cold climates because of less biological activity in the soil

Our Minerosul 40® fertilizer has a sulphate content of over 40%.