Method of producing copper hydroxosulphates and copper fungicidal compositions containing same

摘要

The invention relates to a method of producing aqueous suspensions of copper hydroxosulphates, such as brochantite, antlerite or a mixture thereof, having a high copper weight content. The inventive method consists in reacting an aqueous solution of copper sulphate with an aqueous suspension of copper oxide or copper hydroxide having an average solid particle diameter of less than 25 ?m. The invention also relates to the preparation of copper fungicidal compositions with a copper content of up to 45 %, in the form of powders, granules or concentrated suspensions which can be dispersed in water. The invention further relates to the use of said compositions for the fungicidal treatment of cultures.