Bogdanets V. Agrochemical estimation of fertilizers of new kinds and productivity of spring wheat on meadow-chernozem soil of the Right-bank Forest-steppe of Ukraine

Object - agrochemical processes in meadow-chernozem calcareous soil, forming of productivity and mineral nutrition of spring wheat. Purpose - to investigate the efficiency of long term fertilizer application on agrochemical parameters of meadow-chernozem calcareous soil and different kinds, rates and terms of fertilizer application on spring wheat productivity, grain quality and flour baking properties, to study the ways of optimization of spring wheat mineral nutrition by new compound water-soluble fertilizers Kristalon special and Akvarin №5 according to organogenesis stages in spring wheat plants of varieties Myronivska yara and Sonata grown on meadow-chernozem silt-loamy calcareous soil. Methods -field trials, laboratory experiments, mathematical and statistical, methods of economic and bioenergetic evaluation. Novelty - long-term mineral fertilizer application on the background of manure after-effectща 12 t/ha of crop rotation (crop rotation saturation 238 kg/ha N, P2O5 K2O and 352 kg/ha N, P2O5,K2O in sesquialteral rate) on meadow-chernozem calcareous soil of the Northern Forest-steppe of Ukraine afford to obtain stabile high yield of spring wheat grain 4.0-4.5 t/ha. It was established that application of compound water-soluble fertilizers of a new kind with optimal ratio of macro- and micronutrients on a background of basic fertilization afford to increase yield of spring wheat grain and to improve its quality up to 1st- 2nd classes and to improve flour baking properties. Nutrient optimization and estimation of new compound water-soluble fertilizers Kristalon special and Akvarin №5 on meadow-chernozem calcareous soil of the Northern Forest-steppe of Ukraine for spring wheat had been made for the first time. Results of research - are used in practice and research work. Branch - agricultural sciences.