The following methods shall be used for the prevention, control or disinfection of pests and diseases:

(1) Bacterial diseases, removal and destruction of infected plant or part thereof, care being used to disinfect removal tools to prevent infection therefrom;

(2) Fungus diseases, spraying with effective fungicide;

(3) Chewing or sucking insect pests, spraying with effective insecticide;

(4) Fungus insect pests, spraying with other effective solutions or emulsions described in circulars issued by the director.