The effect of increasing the proportion of the far red region in full-spectrum led irradiation on the growth and development of sugar beet plants (Beta vulgaris L. ssp. vulgaris var. saccharifera Alef.) in closed agrobiotechnological systems

Relevance and methodology. In order to determine the effect of increasing the proportion of far red light (different ratio of red and far red light) in the total spectrum of polychrome irradiation on the growth rates of sugar beet plants of the Smena hybrid, they were grown for 82 days under LED lighting under controlled climate conditions in a Synergotron digital device of the ISR 2.01 model with a twofold increase in the proportion of far red light compared to control.