Аннотация:The effects of a positively charged шnterpolyelectrolyte complex (IPEC) prepared from the commercial polymers: cationic poly(diallyldimethylammoniumchloride) (PDDA) and anionic biopolymer lignohumate (LH), a humic-based plant growth stimulator on soil properties and toxicity to a number of standard test-species are evaluated. The results obtained for cationic IPEC were compared with the ones for anionic LH and cationic PDDA.