Potassium is essential for plants as it plays a vital role in controlling the water and electrical balance in the plant. Pure Sulphate of Potash is the most commonly used source of fertiliser potassium in the horticulture industry. It is chloride free, so can be safely used on crops that are chloride sensitive.
Dolomite is a naturally occurring rock that is valued for its liming qualities and its high content of magnesium and calcium. The magnesium is released slowly, so it is not suitable for use in situations where an acute deficiency needs to be addressed rapidly.
Sulphur is essential as it is involved in the production of chlorophyll as well as protein and vitamin development. Pure SulphurGain (90% S) provides a concentrated source of organic elemental S that slowly becomes available as bacteria in the soil convert it into plant-available sulphate. The sulphur is released slowly, so it is not suitable for use in situations where an acute deficiency needs to be addressed rapidly.
Pure Gypsum is a slow-release source of sulphur and calcium and plays a key role in improving soil structure, aeration and water retention.
Boron is essential for the healthy formation of new plant tissue and the storage quality of brassica bulb crops. Also known as ‘Organibor’, Pure Boron provides a mix of moderate and slow-release B (1-3+ year release profile).
Manganese has a role in many important plant functions including photosynthesis
Copper is an essential micronutrient for both plants and animals. Healthy levels of copper ensure natural growth rates and colouration in plants.
In plants zinc plays a role in functions such as protein synthesis, starch formation and seed production.
Iron is necessary for the health and growth of plants and animals. Iron deficiency is rare in New Zealand.