Features of the winter wheat spelt productivity formation under organic cultivation in the Right Bank Forest Steppe

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To determine the impact of technological factors and biologicalization means complex application on the peculiarities of the winter wheat spelt productivity formation under organic cultivation and to establish the most effective combination of them for the genetic potential maximum realization in the conditions of the northern part of the Right Bank Forest Steppe. Methods. Field, laboratoryanalytical, calculation, statistical. Results. The high efficiency of green manure of spring mustard as a predecessor for the spelt cultivation was established, which ensured an additional yield increase at the level of 1.23–1.30 t/ha, or 23.7–32.8%. Depending on the precursor, pre-sowing treatment of seeds with a biopreparation contributed to an increase in crop yield by 8.6–12.7%, two foliar spraying of crops with biofertilizer by 19.5–25.7%, and the combination of these agricultural measures by 23.2–32.3 %. After the sideral predecessor, spellt formed a grain with a gluten content of 0.61.0% (abs.) higher than when grown after mustard per grain. The use of biological preparations increases the collection of protein by 11.4– 38.5% depending on the predecessor, gluten - by 10.3 –38.7%. Conclusions. The necessity of complex application such elements as sideral predecessor and seeds and crops treatment of biological preparations of fertilizing, stimulating and fungicidal action in the technology of winter wheat spellt organic cultivation has been proved. The optimal parameters of the winter wheat spelt growing technology in organic farming are a combination of pre-sowing treatment of seeds with a growth-stimulating biopreparation (1.5 l/t) and foliar fertilizing of crops with organic fertilizer (twice of 1.5 l/ha at the end of tillering stage and in the stem-extension stage). This technological elements combination for the cultivation after siderate predecessor provided an average over the years of research of 6.43 t/ha yield of grain with a protein content of 14.4% and gluten content of 25.6%, а profit 67.14 thousand hrn/ha, a profitability of 670%.