Physical Description:
Solupotasse comes in the form of a grey/white powder.
Uses:
Solupotasse is a readily soluble form of potassium sulphate, making it the appropriate product for fertigation and foliar application when requiring potassium and sulphate.
Benefits:
Solupotasse is virtually chloride free (max 1% Chloride, typically 0.6% Chloride) with the lowest salt index (46) of all the potassium fertiliser forms (e.g. compared to 114 for potassium chloride and 74 for potassium nitrate). Thus this product is ideal for fertigation of glasshouse crops and outdoor horticultural crops and can also be used for foliar applications. When used for fertigation, this product helps to lower the solution pH, thus reducing clogging of drippers and assist in keeping micro-irrigation systems clean. As there is no nitrogen present in solupotasse, it is easier for growers to be able to manage the K:N ratio, which should be high during fruit growth or before the harvest of vegetables.
Application:
Solupotasse is highly soluble, with a maximum concentration of 100g/litre being achievable with continuous stirring for fertigation. Ensure there is complete dissolution before injecting into the irrigation system, and also ensure a filter is used. Rates of application will vary according to the crop and soil fertility - it is best to confirm rates with a Field Officer. If used as a foliar application, apply 7-10 kg Solupotasse per hectare per application, dissolved in a minimum of 300 litres water. Apply either early in the morning or late evening. Avoid foliar applications during the heat of the day. For further assistance, discuss with your local field officer.
Storage & Handling:
As with most solid fertilisers, Solupotasse can be stored over a season as long as it is kept in a cool, dry, well ventilated area. It is compatible with most fertilisers, except those containing Calcium.
Source:
Solupotasse is sourced from Europe. Solupotasse is manufactured via the Mannheim process, where potassium chloride and sulphuric acid is combined in a furnace heated to around 800 C.