THE EFFECT OF MINERAL FERTILIZER RATE AND BIOSTIMULATOR APPLICATION ON LEAF SURFACE FORMATION IN GLYCYRRHIZA URALENSIS FISCH.

Abstract

The article presents data on the effect of scarification of the seeds of the Ural licorice plant (Glycyrrhiza uralensis Fisch) before planting, soaking in warm water for 36 hours, and foliar treatment with biostimulants against the background of various doses of mineral fertilizers during the first, second, and third years of plant life during the branching and flowering periods on the surface of the leaves of the plant. High indicators of leaf area in plants were observed when seeds were treated with Tandem stimulator at a rate of 400 ml/t before sowing, 300 ml/ha during the branching period in the first, second and third years of plant life, and 500 ml/ha during the flowering period, against the background of the application of mineral fertilizers N100 P140 K80 kg/ha. At the end of the growing season, the leaf area formed per hectare was 54.5 thousand m2/ha in the first year of life, 56.6 pieces/plant in the second year, and 59.6 thousand m2/ha in the third year.