Comparative assessment of the contentof mobile phosphor usinvario usgenetic horizons of ordinary chernozem on tilled field compared with virgin soil in conditions of the northern Steppe of Ukraine

Abstract

The change of the content of mobile phosphorus
in the genetic horizons of ordinary black plowing a
relatively virgin land under North Steppe of Ukraine
at different research methods has been analyzed. For
accurate diagnosis of phosphate status of these soils
should use one of three methods: Karpinski–
Zamiatina (GATS 4727), Machygin (GATS 4114)
or Olsen (GATS ISO 11263). It has been established
that real natural security arable layer ordinary black
phosphorus corresponds to the boundary of low and
medium security that element of plant nutrition.