Fungicide based on copper oxychloride which acts by contact and is used in the preventive fight against a large number of diseases affecting fruit, vine, olive, citrus, horticultural and floral plants. Zapi blue copper oxychloride is used in the fight against downy mildew, bubbles, coronary, peacock eyes, monilia, scabies, bacteria, etc. Thanks to its particular formulation in hydrodispersive granules, it is endowed with high efficacy, adhesiveness and persistence of action. It is a product that can be used in organic farming.