Kozelets G. Agrotechnical measures of increase of productivity of coriander by the underwinter and early spring terms of sowing in the northern Steppe of Ukraine

Object of investigation is the consistent patterns of the processes of growth and development of plants and forming of productivity of coriander varieties depending on agrotechnological measures of cultivation. The purpose is to develop the agrotechnological measures of increasing of productivity of coriander varieties for the underwinter and early spring sowing terms at the optimum row spacing, complex application of macro- and microfertilizers, growth regulators of plants and means of plant protection from weeds in the northern Steppe of Ukraine. Methods - field experiments, methods of hypothesis, synthesis, analysis, measuring and weight, biochemical, of mathematical statistics and economical. Results: the agrotechnological measures of growing of coriander for the underwinter and early spring terms of sowing, which provide the formation of yield at the level of 1,74-1,85 t/ha in the conditions of the northern Steppe. The implementation of the results was done in the Kirovograd Institute of AIP of NAAS and other farms of different ownership in Kirovograd and Kharkiv regions and Crimea in the area of 560 hectares. Novelty – for the first time in the conditions of the northern Steppe there were investigated and substantiated the agrotechnological measures for growing of varieties of coriander for the underwinter and early spring terms of sowing. It was established the peculiarities of weediness of crops of coriander and was proved the expediency of the complex use of herbicides of Hezahard 500 FW, c. s. and Zenkor 70 WG, s. g. on crops of coriander. It was proposed the economically viable and effective agrotechnological measures of increasing of productivity of coriander for the underwinter and early spring terms of sowing, which provide the complex preplant insertion of mineral fertilizers (N10P10K10), seed processing with the microfertilizer of Reacom-CO (4 l/t) and spraying of plants in a phase of shooting with the growth regulator of Treptolem ( 15 ml/ha). Area – agriculture.