INFLUENCE OF DOZES AND APPLICATION METHODS OF BORIC FERTILISER ON THE PRODUCTIVITY OF VALERIANA OFFICINALIS ON THE SOD-PODZOLIC SANDY SOIL

Abstract

For the maximal productivity and quality of valerian at the sod-podzolic sandy soils at the maintenance of mobile forms of the boron no more than 0,5 mg/kg it is normally recommended to apply В_{(0.050+0.050+0.050)} or into the soil - В_1,5 kg/ha on the background of organic fertilizers (60 t/ha) and mineral fertilizers (N₉₀P₉₀K₁₂₀) to valerian medicinal plants during vegetation. Appling the boron to the plants during vegetation В_{(0.050+0.050+0.050)} or to the soil- В_1,5 kg/ha is of equal value in regard to the yields (23,0-23,3 c/ha) and extractive substances contents (27,8-27,9%) in the roots and rhizomes. The maximal yield of the extractive substances from unit of the area (6,36-6,49 c/ha) is obtained in these variants accordingly.