Alternaria disease of cruciferous vegetable crops

Tashkent State Agrarian University, Tashkent, 100140, Uzbekistan

^* Corresponding author: ubaydullarahmon@mail.ru

Abstract

The most pervasive and harmful illness is cruciferous black spot disease. This disease starts to show symptoms as soon as the seed emerges from the soil and continues all through the growth season. In regions designated for seeds, cabbages left for storage, and areas planted for human consumption, the disease is seen. The illness Alternaria mostly affects the cruciferous plants’ organs responsible for generating seeds, and it severely damages the pods and seeds. The leaves and bulbs of crucifers are less impacted. Every region that grows cruciferous vegetable crops has Alternaria disease. In this article, the spread and development of alternaria disease in cruciferous vegetable crops (cabbage, cauliflower, broccoli, red cabbage, collard, Napa cabbage) and its damage by the fungus A. brassicae, which causes alternaria disease, and damage by alternaria disease and its causative agent, were determined. Due to the Alternaria disease, the yield loss of all vegetable crops was observed. Compared to a healthy plant, the loss of 14.3-17.4% of the yield of cabbage, followed by cauliflower - 8.3-12.1%, red cabbage - 10.0%, Napa cabbage - 10.0-12.2% and, broccoli 10.2-16.0% was reported.