Matsiychuk V. Тhe effects of seeding and fertilization rates on fiber flax flax yielding capacity under the conditions of Central Polissya Ukraine.

The aim is to determine the peculiarities of growth, development, forming of yield and productive quality of the new modern varieties of fiber flax Kamenyar and Irma at the various seeding and fertilization rates, to develop recommendations in relation to technology of growing under the conditions of the central regions of Ukrainian Polissya. The object is a process of yield forming of fiber flax varieties Kamenyar and Irma, their quality indexes under various rates of seeding and fertilization. The subject is the studying of seeding and fertilization rates for the new varieties of fibre flax Kamenyar and Irma. Methods: field method, statistical method, measuring - weight method, quantitative - comparative method. A novelty consists in determining of the peculiarities of the new varieties of fibre flax yielding capacity and their quality depending on seeding and fertilization rates$ establishing the optimum seeding amount depending on growing for fibre, seed or seed and fibre simultaneously; groundingthe new optimum fertilization rates for the new varieties of fibre flax Kamenyar and Irma, which provide forming of non-lodging and suitable for mechanical harvesting upright stems and forming the fibre with high spinning capacity. The results have is proved the new elements according to economic and power indexes provide the high competitiveness of growing technology of fibre flax varieties. Applied in the agroformations of Zhytomyrska Region; blanch - agroculture.