DEVELOPMENT OF MYCOSES OF WINTER TRITICALE DEPENDING ON MINERAL NUTRITION AND SYSTEMS OF PROTECTION IN UKRAINIAN POLISSIA

The etiology of main diseases of winter triticale in agrocoenosis of Ukrainian Polissia was examined. There was observed the development of mycoses depending on application of systems of fertilization and plant protection. The increase in development of leaf diseases of triticale was observed after application of N₃₀P₉₀K₉₀ + N₃₀ (29^th stage) + N_{30 kg of act. mat./ha} (37^th stage) and N₃₀P₄₀K₁₄₀ + N₃₀ (29^th stage) + N₃₀ (37^th stage) + N_{30 kg of act. mat./ha} (51^st stage) under conditions of minimal and complex systems of plant protection. It was found that the combined application of fertilization system of winter triticale: N₃₀P₄₀K₁₄₀ + N₃₀ (29^th stage) + N₃₀ and Chlormequat chloride 750, aqueous solution, 1.5 l (37^th stage) + N_{30 kg of act. mat./ha} (51^st stage) and its complex protection (seed disinfection with the preparation Lamardor 400 FS, ТН, 0.15 l/t, spraying the crops on the 31^st stage of plant development with the herbicide Ellay Super, 70, water soluble granules, 0.015 kg/ha, and fungicide Talius 20 e.c., 0.15 l/ha.) ensures the control of development of powdery mildew on the level of 1.6%; leaf rust – 1.4%; Septoria leaf blotch – 5.3%; root rot - 0.4% and increase in grain yield at 1.71 t/ha