METHOD AND DEVICE FOR COMBATING MUSHROOM IN PLANTS HOLDED IN A CLOSED NUTRIENT SYSTEM, ESPECIALLY IN THE GREENHOUSE GROWTH

摘要

A method for combating fungal attack in plants kept in a closed nutritional system (especially a greenhouse) involves releasing free copper ions into the nutrient solution (A) using an electrode pair, consisting of a copper anode and a cathode immersed in (A), under control such that free Cu ions are present in (A) (when supplied to the plants) at 0.1-0.8 ppm. A method for combating fungal attack in plants kept in a closed nutritional system (especially a greenhouse), in which copper ions are added to the nutrient solution (A) and the concentration of (A) is continuously monitored via the conductivity and kept constant by addition of nutrients, free copper ions are released into (A) using an electrode pair, consisting of a copper anode and a cathode immersed in (A). A control unit adjusts the Cu ion release as required, such that the binding threshold of Cu ions in (A) is exceeded and free Cu ions are present in (A) (when supplied to the plants) at a concentration 0.1-0.8 (preferably 0.2-0.3) ppm. An independent claim is also included for the corresponding apparatus. - ACTIVITY : Fungicide. - MECHANISM OF ACTION : None given.