ENVIRONMENTALLY FRIENDLY METHODS TO PROTECT ORMOSIA HOSIEI FROM DISEASES

Ormosia hosiei Hemsley et E.H. Wilson is a rare endemic species that grows in low-mountain deciduous forests of China. The high level of seeds infestation caused the disappearance of O. hosiei. In this paper, we consider the effectiveness of a complex of environmentally safe methods of protecting O. hosiei from diseases: mechanical (scarification and removal of the infected shell), physical (laser radiation), biological (microbial preparations). It was possible to significantly increase the germination of seeds of the studied species (by 76.5 %) and reduce the percentage of affected seedlings (by 61.7 %) by removing the dense seed coat together with the use of laser irradiation. The use of biological preparations of Alirin-B and Rizoplan after laser stimulation led to an increase in the number of pathogen antagonist bacteria cells on the leaf surface, and the degree of their dissemination by fungi regularly changed 2 and 3 times, respectively. In connection with the above, the complex use of environmentally friendly methods and means of combating plant diseases is recommended, which makes it possible to achieve high effectiveness of the fight against phytopathogens.