Copper fungicides

Benefits of inorganic copper fungicides and bactericides

Copper (Cu) is used for more than 250 years as plant protection product in agriculture. The first uses of copper fungicides were for seed treatments against seed borne diseases in cereals. At the end of 19th century farmers started to use copper fungicides in vine grape for control of downy mildew (Plasmopara viticola). In the 20th century copper based plant protection products have been widened considerably. They are used in more than 120 crops for suppressing of more than 200 diseases.

Copper based plant protection products are used in all major plant crops, important from nutritional, economic and social aspects in Europe and other continents. The major plant crops in which copper fungicides are used to control fungal diseases are: vine grape for control of downy mildew (Plasmopara viticola), potato and tomato for control of potato blight (Phytophtora infestans) and early blight (Alternaria solani), pome fruit trees for control of scab (Venturia inaequalis) and fire blight (Erwinia amylovora), peaches and nectarines for control of peach leaf curl disease (Taphrina deformans), olives for control of olive peacock spot (Cycloconium oleaginum), hop for control of downy mildew of hop (Pseudoperonospora humuli) and numerous other diseases. In the last years, also the bacterial diseases have become more important in crop productions and we are successfully suppressing them with copper compounds too. The most important bacterial diseases which are suppressed with copper compounds belong to genus Erwinia sp., Xanthomonas sp., Pseudomonas sp., Ralstonia sp., Clavibacter sp., Agrobacterium sp. and Xyllea fastidiosa.

Copper based plant protection products have, unlike conventional fungicides, low risk of developing resistant fungal strains due to their multilateral mode of action. Because of this caracteristic they have grate value in antiresistant strategy in suppression of important fungal diseases. Copper products also play an important role as plant protection products in organic farming and they are included in all manuals for Technological supports for organic farming, which are published by the Ministry of agriculture, forestry and food. Manuals are in accordance with the list of permitted plant protection products laid down in Council Regulation (EC) No 834/2007 of 28th June 2007 on organic production and labelling of organic products.

Fungicides/bactericides from the Cuprablau Z group, which are produced in Cinkarna Celje, provide the desired performance at low working concentration due to the large distribution of particles. There is less chance of occurrence of phytotoxicity due to good buffer capacity; resistance does not occur; copper residues in crops are below the limit values, which are determinated by the Regulation (EC) No 396/2005 of the European Parliament and of the Council of 23th February 2005 on maximum residue levels of pesticides in or on food and feed of plant and animal origin.

It is important to point out that there are no alternative plant protection products up to date as copper compounds are, which would at the same production conditions, ensure the same or better effectiveness against bacterial and certain fungal diseases, especially in organic production.


A list of our Copper - based products:


Mateja Cvikl-Marovt – sales manager
P: +386(0)3 427 6212
M: +386(0)30 998 691

Vili Kurnik – agricultural advice
P: +386(0)3 427 6233
M: +386(0)51 367 008

Igor Zidarič – agricultural advice
P: +386(0)3 427 6337

Karmen Veber – technical information
P: +386(0)3 427 6372