Pavlyuk S. 3. Agrochemical estimation of fertilizers application at spring triticale growring on meadow-chernozemic calcareous soil of the Northern Forest-steppe of Ukraine.

Object - processes, that caused changes of the main agrochemical indices of meadow-chernozemic calcareous light-loamy soil and productivity of spring triticale when mineral fertilizers application. Purpose - to study the possibility of receiving sustainable spring triticale grain yield when the application of mineral fertilizers, soil fertility preservation, to optimize the mineral nutrition of spring triticale by means of macro-and micronutrients application according to the stages of organogenesis in plants. Methods - the short-term field experiment, small plot field experiment, laboratory, mathematical and statistical, methods of economic and bioenergetical evaluation. Novelty - For the fist time in north Forest-steppe of Ukraine efficiency of new complex fertilizers (Nutribor, Acvarin 5, Crystalon special) application according to the stages of organogenesis in new spring triticale cultivar Victoria on the cultivated meadow-chernozemic calcareous soil and was studied: the characteristics of changesof mobile nitrogen, phosphorus and exchangeable potassium productivity depends on fertilizers application were developed, balanced fertilizer application system was economically estimated For the first time the device N-tester was used for rapid diagnostics of nitrogen nutrition and forecast grain protein content of spring triticale. Results of researches - are used in practice and research work. Branch - agricultural sciences.