Katerynchuk I. Formation of spring rape crops seedy productivity depending on the elements of cultivation technology in the northern part of Right-bank Forest-Steppe.

The object is the process of formation of productivity of crops of a variety and variety sample of spring rape depending on the seeding of different fractions and application in the crops of growth-regulatory fungicide "Pictor". The goal was to establish the peculiarities of the production of seed crops of spring rape varieties in the northern part of Right-bank Forest-Steppe and to realize their biological potential, depending on the fractional composition of the seeds, application in the crops of the growth-regulatory fungicide "Pictor" and the soil-climatic conditions of the region. Methods - the field, instrumentation-gravimetric, laboratory, calculation, visual, mathematical-statistical, comparatively-calculation. It was the first time the reaction of domestic varieties on sowing the seed with different fraction and usage of growth-regulatory fungicide "Pictor" on the peculiarities growth, development and formation of spring rape productivity at the level of 3,83-5,42 t/ha with high technological quality of seeds were established. The basic results of researches are inculcated in 2014 and 2016 in the economies of the farms of the Kyiv region areas on a general area 11 hectares, that provided the increase of the productivity on 0,42 to 1,50 t/ha. The area of application is agricultural production.