Application of New Fungicides Against the Diseases of Agricultural Crops

Abstract

This article outlines the results of the research conducted on farms Changimardon bogi in Parkent District of Tashkent Region and Behruz Baraka Fayz in Tashkent District of Tashkent Region on the origin and spread of downy mildew disease of the grapevine and phytophthora disease of potato plant, the symptoms of the diseases and their damage, and the data on the biological efficacy of new fungicide Pilarzox 25.5% SC applied against these diseases. As a result of our research: In the variant with Pilarzox 25.5% SC fungicide treatment at a rate of 1.2 l/ha against downy mildew disease of grapevine, the spread of the disease was 4.7%, the development of the disease was 0.7%, and the biological efficiency was 91.0%. The highest biological efficacy of potato plant against phytophthora disease was observed in the variant with Pilarzox 25.5% SC fungicide treatment at a rate of 2.5 l/ha. At the same time, the development of the disease was 2.4% in the leaves, 2.1% in the stems, and the biological efficiency was 89.5% in the leaves and 89.2% in the stems.

Soil-borne plant pathogenic fungi biodiversity of sunflower

“…According to Lukomets and Piven [26], sunflowers can be returned to the previous fields for cultivation after 8 years in crop rotation. This is primarily determined by the need to protect sunflowers from soil pathogens, broomrape, cottony rot and head rot, downy mildew, Fusarium wilt, as they can persist in the soil for a long time [27].…”

Efficacy of Plant Growth Regulating Preparations in the Cultivation of Vegetable Crops

“…Phytosanitary monitoring was carried out in the agrocenosis of vegetable crops during the growing season. The methods of observations on the growth development of plants were out on the basis of tests of phytoregulators [7,8,9,13,14,15,16]. For mathematical and statistical processing of the obtained results Microsoft Excel 2010 and statisticade programs were used and determined by the method of B.A.Dospekhov (1985).…”