Dovbush E. An impact of micronutrient fertilizers and fractional consistency of seeds on the productivity and quality of seeds of variety of rice

. Object of study – the processes of growing, development and forming of crops and quality of seeds of variety of rice depending of micronutrient fertilizers and the way of their application (foliar feeding, the bushing phase and the tubing phase). Aim – the identification of the seed productivity of modern varieties of rice depending on biological potential of researched genotypes, micronutrient fertilizers and the way of their application on the South of Ukraine and definition of impact of fractional consistency of seeds of varieties of rice on yield and sowing qualities. Methods : field – for definition of impact of researched factors on biometric indexes of plants, formation of overground mass and the area of leaf’s surface, their productivity; laboratorial – for analysis of the structure of crops, yield qualities; calculation – for evaluation of the effectiveness of application of micronutrient fertilizers for rice; mathematically – statistical – for foundation of validity of received results of research. Results – according to the results of conducted research it was proposed science-based technology of growing rice recommendations in conditions of the South of Ukraine, it was determined the optimal time of insertion of micronutrient fertilizers, which guaranteed provide the high yield, yield of condensing seeds and high coefficient of reproduction perspective plants. It was determined that processing of new perspective varieties of rice with micronutrient fertilizers by norm 3l/ha foliar feeding for plants in tubing phase provides high seed productivity and the most result of condensing seeds from 1 ha. It was determined optimal parameters of fractional consistency of seeds of varieties of rice, which provide high yield conditions. Novelty – at first on chestnut soil in the area of the South Steppe there were determined peculiarities of growth and development of varieties of rice Premium, Vicont, Ontario and their seed productivity by different time limits and ways of insertion of micronutrient fertilizers. It was determined the impact of researched factors on photosynthetic potential, it was identified the impact of structural elements of productivity on yield of condensing seeds; it was identified economical effectiveness of growing of rice. The scientific value – separate improved elements of technology of growing of varieties of rice, which gave opportunity to increase yield of seeds, the yield of condensing seeds and to increase the coefficient of reproduction of perspective genotypes, adapted for conditions of the South of Ukraine. Sector – agriculture.