Comparative analysis of the effectiveness of the use of various preparations in the cultivation of English oak seedlings in the conditions of the Republic of Tatarstan

English oak is one of the main forest-forming species of the Republic of Tatarstan.Degradation of oak plantations is observed everywhere due to the influence of various factors: adverse climatic conditions, damage by pests and diseases.Much attention is paid to the issue of growing healthy planting material, since oak seedlings are often damaged by powdery mildew caused by the fungus Microsphaera alphitoides Griff, et Maubl.The purpose of the study is to study the protective effect of various preparations when growing pedunculate oak seedlings in open ground conditions.The experiments were carried out in the nursery of the Arysh district forestry of the GKU Kzyl-Yulduz forestry of the Republic of Tatarstan.The object of study is two-year-old seedlings of English oak.To compare the effectiveness, fungicides were selected that are widely used in agriculture -Thiovit Jet, Raek, KE -and biological products KS31, PS17, KS54, KS25, developed in the laboratory of Kazan State Agrarian University.In the course of the studies, after each treatment, the spread and development of the disease, the biological effectiveness of the drugs were calculated.At the end of the growing season, the biometric characteristics of the seedlings were measured.

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