EFFECTS OF ANTI-EROSION CULTURAL-PRACTICE S ON THE QUALITY OF CROP PRODUCTION

In the years 1992 to 1993 effects of antierosion technologies on the c ontent of risk elements in soil and crops of crop rotation: rye - pota toes - oats - rape have been studied. In view of the incidence of risk elements in soil the trial was situated in the landscape with low ant hropological influence. Experimental plot was represented by acid camb isol on paragneiss, loam sandy to sandy loam soil. All risk elements w ere determined in extract 2M HNO3, Hg content was ascertained by the T MA method. Treatments of classic and two antierosion crop rotations wh ich rotated in three replications did not show the effect of soil cons ervation processing on raised increase in risk elements into plant pro ducts. Statistically significant differences in the content of risk el ements were manifested only between investigated crops regardless the technology chosen. Simultaneously with it, the ratio of enrichment (ER ) of sediment in trace elements was calculated. The highest ER values were achieved at Zn (5.5) and Cr (1.6). Concerning As, Co, Cu and Pb, there was only a slight increase in the content of washed away soil co mpared with the original material. Raised Ni concentration in the sedi ment was not recorded. Certain increase in the ER of risk elements in the sediment was manifested in treatments where antierosion practices were applied. This was evidently a result of increased content of clay particles in the sediment of treatments with antierosion applications .