Disadvantages of calcium copper sulfate

The action is relatively simple, and it is prone to phytotoxicity. The compatibility of copper preparation is poor. Copper preparations are the most likely to cause phytotoxicity, and their mixture further increases the possibility of phytotoxicity. Generally, most copper preparations cannot be mixed with pesticides containing metals, nor can they be mixed with thiophanate-methyl, carbendazim and pesticides containing diethofencarb.