CHEMICAL COMPOSITION OF VALERIAN AND REMOVAL OF MINERAL NUTRITION ELEMENTS

Abstract

The removal of macro and micro elements has been determined as a result of field research on sod-podzol sandy soils spread with thin loam in Grodno region. It’s established that on average valerian consumes from soil 135.3–184.9 kg/hectare of nitrogen; 55.9–69.9 kg/ha of P₂О₅;  143.0–177.8 kg/ha of K₂О; 96.4–120.1 kg/ha of CaO; 29.1–37.0 kg/hectare of MgO; 74.7–101.7 g/ha of boron, 51.4–64.6 g/ha of copper and 171.0–210.7 g/ha of zinc. In respect of the quantity of the consumed nutrition elements per unit of area they can be put in the order of decrease: K > N > Ca > Р > Mg. Per 10 c of roots and rhizomes leaves of valerian remove 36.0–40.2 kg of nitrogen; 14.4–15.9 kg of phosphorus; 35.8–40.7 kg of potassium; 25.3–27.8 kg of calcium; 7.7–8.7 kg of magnesium; 18.8–22.1 of boron; 11.6–16.3 of copper and 41.8–48.9 of zinc. The main part of phosphorus, potassium, calcium and magnesium is removed by leaves, most boron, copper and zinc – by roots and rhizomes.