Cheban S. Growth and productivity peculiarities of an apple-tree on rootstock MM106 depending on the rates and methods of nitrogen fertilizer application in the Right-Bank Forest-Steppe zone of Ukraine

Objects of the research - an apple-tree of cv. Idared, Mutsu, Mantuanske on MM106, mineral fertilizers (nitrate ammonium, carbamide, superphosphate, potassium chloride). Purpose of the research - to determine optimal rates and the ratio of mineral fertilizers under main fertilizer and foliar nitrogen fertilizing of apple plantations. Methods of the research - field, laboratory, mathematic-statistical, economic-calculating. Theoretical and practical results - optimal rates and the ratio of mineral fertilizers being applied in combination with foliar dressing were determined; optimal terms and frequency of foliar dressing in apple plantations were explained. Variety peculiarities of the above-ground part of the tree were studied; the productivity of apple plantations depending on rates and methods of the fertilization was determined. Novelty - the productivity of winter apple varieties under the combination of nitrogen root and foliar fertilizing on the background of PK fertilizers was determined in theForest Steppe Zone of Ukraine. Extent of introduction - experimental-training farm "Rodnykivka" of Uman SAU, SVK named after Shevchenko in Bushynka, Tyvriv district, Vinnytsia region, Podilsky DATU in teaching "Fruit science". Sphere of application - commercial horticulture, agrarian educational institutions of the III-IV categories of accreditation.