Polyfactorial field experiment was established and investigated during the vegetation periods of 2004, 2005 and 2006 at the Dolna Malanta locality (Nitra district, Slovak Republic). This locality is geomorphologically situated in western part of Zitava upland as an independent part of river Danube lowland. From the agriclimatic conditions point of view, this locality belongs to the warm agriclimatic region, dry agriclimatic microregion, and mostly mild winter zone. In the year 2004 yields of milk thistle (Silybum marianum /L./ P. Gaertn.) achenes, e.g. fruits, ranged from 232.9 kg.ha -1 (RMF variant: – incorporated crop residues with intercrop and artificial fertilizers) to 794.5 kg.ha -1 (KBF variant: – without crop residues and intercrop, artificial fertilizers have been used) at the standard humidity (14%). In the year 2005 the yields varied from 554.0 kg.ha -1 (RMO variant: – incorporated crop residues with intercrop, no artificial fertilizers) to 1 480.0 kg.ha -1 (RBO variant – incorporated crop residues without intercrop and artificial fertilizers). In the year 2006 the yields varied from 1 425.6 kg.ha -1 (RBO variant: – incorporated crop residues without intercrop, no artificial fertilizers) to 1 832.0 kg.ha -1 (KBF variant – without crop residues, without intercrop and with application of artificial fertilizers).

quantitative-qualitative parameters; milk thistle; Silybum marianum /L./ P. Gaertn; yield

Presentation: oral