BIOLOGICAL CHARACTERISTICS OF FUNGAL SPECIES THAT CAUSE DISEASES OF ONION FLOWERS AND MEASURES TO COMBAT THEM

Abstract

The experiments were carried out in floriculture farms located in the Namangan region during 2017-2019, and laboratory work was carried out at the floriculture centers of the Namangan region. 19 species and 5 forms of pathogenic fungi were identified in 7 species of bulbous flowers grown in the conditions of the Namangan regions of the Republic of Uzbekistan. Infection of selected bulbous flowers with 27 species of pathogenic fungi was revealed. It was revealed that the selected 7 species of bulbous flower plants were infected with the most dangerous diseases, such as botrythiosis and rust diseases; 5 species of bulbous flower plants were infected; Fusarium wilt-4; Fusarium rot-4; powdery mildew-1; scleratinosis-2; penicilliosis-3, powdery mildew, black aphids and downy verticilliosis were infected in only one bulbous flower plant. In the conditions of the Namangan region of the Republic of Uzbekistan, on 7 species of bulbous flower plants , the Trichoderma viride fungus was used as a biological method , and such fungicides as Maxim, Bayleton, Fundazol were used as a chemical method in the fight against identified diseases