Makarenko М. 3. Influence of prolonged application of fertilizers on forming the harvest of winter wheat on the meadow-chernozemic carbonate soil of the north part of Forest-Steppe zone of Ukraine

Object - character of change of the nutritive mode of meadow-black-earth carbonate coarse-dust light-loamy on the loess-like loam soil and productivity of winter wheat. Purpose - to study an efficiency of the protracted application of fertilizers (organic and mineral) on a winter wheat in stationary experiment, to develop the methods of prognostication of productivity and indexes of quality of grain by means of traditional and new instrumental methods of research, and to optimize the mineral feeding of winter wheat by means of application of new water soluble complex fertilizers - Crystalon special and Acvarin 5 - according to the stages of organ formation in plants on meadow-black-earcarbonate soil. Methods - the field experiment of long duration, the short-term field experiments, agricultural chemistry methods (physical and physicochemical), physiological, instrumental, mathematical and statistical, methods of economic evaluation. Novelty - the methods of technological management of the levelof productivity and quality of winter wheat grain by the expedient use of complex fertilizers both traditional and new are developed. They are based on application of methods of prognostication of productivity and protein content in grain, according to accumulation of dry matter and general nitrogen content in plants in the stage of forming ears and the content of mineral nitrogen in soil in the phase of the spring bushing on a meadow-black-earth carbonate soil of north Forest-steppe of Ukraine. For the first time the efficiency of application of new water soluble complex fertilizers Crystalon special and Acvarin 5 on meadow-black-earth carbonate soil on winter wheat crops was estimated. For the first time the device N-tester was used for rapid diagnostics of nitrogen feeding of winter wheat on meadow-black-earth carbonate soil of north Forest-steppe of Ukraine. Results of researches - are used in practice and research work. Branch - agricultural sciences.