INFLUENCE OF SELENIUM ON PRODUCTIVITY AND SELENIUM ACCUMULATION IN HAY OF THE LONG-TERM CEREAL GRASSES CULTIVATED ON LUVISOL LOAMY SAND SOIL WITH DIFFERENT LEVELS OF ACIDITY

Abstract

Application of sodium selenit in dernovo-podsolic soil with the low maintenance of selenium (30-40 mkg/kg of soil) before crops of cereal grasses is effective way of selenium. The selenium content at optimum level for forages in hay hedgehogs of a national team (101,8-167,6 mkg/kg) and hay timothy grass (110,7-134,4 mkg/kg) was reached in the first hay crop in the first year of using at doses 200 and 300 g Se/he, in the second hay crop - only in hay hedgehogs of a national team at a dose 300 g Se/he. In the second year of using of grasses at doses 100-300 g Se/he the selenium maintenance in hay of grasses did not reach an optimum level, but was above background on the average in 1,6-3,5 times that is very significant for selenodeficiency zones.