VARIABILITY OF BASIC QUALITATIVE TRAITS O F WINTER RAPE JET NEUF IN RELATION TO APPLICATION OF THE PREPARATION RELAN PGR

The aim of a presented study was to assess the domestic growth regulat or and stimulator Relan PGR, concerning its effect on qualitative trai ts of winter rape seed, and from this standpoint to determine the best date of its application. An optimum date for the application of the p reparation Relan PGR, with respect to the basic qualitative traits (in particular oil content) is the stage of elongated growth; this has be en manifested in 1 % rise of oil content. Further sprayings had no pos itive effect, the preparation has no contaminative effects from toxico logical and ecological aspects. A significant decrease in tocopherols as a result of application of the preparation Relan PGR will be solved within the research of growth substances.