OIDIUM (UN-SHUDRING) KASALLIGINING TARQALISHI VA KELTIRADIGAN ZARARI

Abstract

This article examines the spread and damage of powdery mildew

in vineyards in the Tashkent, Samarkand, and Fergana regions from 2019 to 2021.

The study found that powdery mildew is widespread in vineyards in the Tashkent region and moderately prevalent in the Samarkand and Fergana regions. In particular: in the vineyards of the Tashkent region, the prevalence of oidium on leaves ranged from 15.5% to 56.6%, on shoots - from 10.5% to 38.4%, and on bunches of grapes - from 18.5% to 51.5%, in the Samarkand region, the prevalence of oidium on leaves ranged from 18.2% to 36.0%, on shoots - from 10.8% to 18.2%, and on bunches of grapes - from 14.5% to 31.8%, in the Fergana region, the frequency of occurrence of oidium on leaves is from 16.5% to 35.6%, on shoots - from 10.0% to 21.4%, and on bunches of grapes - from 14.4% to 32.6%.