Skuridin O. Control of grapevine bunchstem necrosis on vineyards

Object of the study - grape bunch stem necrosis spreading on vineyards, the peculiarities and limiting factors of diseases development, the disease harmfulness on the vine, field resistance of varieties, system of protective measures by using highly effective fungicides. The purpose - ecological peculiarities of bunch stem necrosis development studying, protective measures for crop quantity and quality save developing. Methods of the research - route surveys, field experiments, laboratory researches, mathematic, statistic and economic calculations. Novelty - a level of grapevine bunch stem spread and development has been estimated, a method of disease phytosanitary monitoring for industrial vineyards has been developed, a system of bunch stem necrosis control on the base of modern fungicides assortment has been developed. The results - a system of bunch stem necrosis control on the base of three specialized treatments on the area of 10 hectares has been applied. Best fungicides effectiveness level is nearly 90%. The calculated effect of the developed system is ranged from 18 556 till 34 337 thousands. Brunch of industry - viticulture.