Ефекти от приложението на фунгигация в лозово вкоренилище.

The study was based on the results of a field trial in the vine nursery of the Institute of Viticulture and Enology – Pleven in the period 2017-2020. The rooted cuttings belonged to the varieties Bolgar, Misket Plevenski and Cabernet Sauvignon grafted to Berlandieri x Riparia SO4 rootstock. A similar scheme of spraying against fungal diseases was applied in the tested variants, the difference being only in the method of treatment – through the irrigation water with micro-spraying and in the conventional way with a backpack sprayer at working solution rate of 500 l/ha. Combinations of fungicides were alternated as the spraying was carried out every 3-4 days until the end of August. The economic assessment was derived by means of a system of indicators – average yield, gross output, production costs, net income, cost price, cost effectiveness. The application of fungicides with irrigation water reduced labor costs, but required additional inputs to ensure the quality of treatments. Under the specific conditions of the experiment it was found that the application of the fungigation showed better economic results compared to the conventional method of treatment in the production of vine propagation material of the varieties Bolgar and Misket Plevenski. Higher values of the indicators net income and cost effectiveness were obtained in the variant of conventional treatment compared to the application of fungigation in the production of Cabernet Sauvignon vine planting material. [ABSTRACT FROM AUTHOR]