Mycobiota sowing of onion in the conditions of the Qashqadaryo region of Uzbekistan

In this article the issue of avoiding the pythium rot on onion upon storage is considered also the article presents the results of studying the composition of onion diseases and their pathogens. 2013 to 2018 A total of 172 species from 60 genera of phytopathogenic fungi were identified, of which 94 species were first noted onions in Qashqadaryo region, Uzbekistan. The most widespread and harmful diseases of onions upon storage in Uzbekistan is rottenness, including Fusarium blight, black rot and blossom blight (aspergillosis and penicilliosis), also rottenness, caused by imperfect fungi, are noted, which cause: Botrytis alii, B. cinerea, Aspergillus niger, Penicillium expansum, Trichothecium roseum, Cladosporium herbarium. Rare lesions caused by the pathogens Urocystis cepulae and Puccinia alii were less common.