Nutrients

The primary macronutrients, nitrogen, phosphorous and potassium, are in high demand and need to be regularly included in treatment programmes. Secondary macronutrients, calcium, magnesium and sulphur, are required less frequently and in smaller quantities. On the other hand, grass plants require these secondary macronutrients in larger quantities than micronutrients. Levels of calcium, magnesium and sulphur are often adequate in soils with favourable PH and organic matter. Where necessary, secondary macronutrients can be included in treatment programmes. 

Calcium

Calcium helps the growth and development of cell walls. A strong cell structure helps plants resist disease and external factors that can cause stress to the grass. In addition to helping create a high-quality lawn, calcium benefits the structure and texture of the soil. Calcium deficiencies result in poor growth of the plant leaves and the roots.

Magnesium

Magnesium supports the green coloration of plants through the formation of chlorophyll and enzyme activators. The process of photosynthesis requires access to magnesium. Deficiency causes a yellowing of the grass plant, often in the older leaves as available magnesium is taken to newer growth to support photosynthesis.

Sulphur

Sulphur is a key macronutrient for good lawn health. It helps in the development of resistance to disease and stress, in the formation of amino acids, proteins and enzymes, and in seed production and root growth. Sulphur also helps balance the pH levels of the soil. Sulphur deficiencies lead to chlorosis, a yellowing of the plant, along with stunted growth.