EFFECTS OF ORGANIC POLLUTANTS (PAH-PCB) A ND HEAVY-METALS IN SEWAGE FIELDS ON BIOMASS PRODUCTION AND HEAVY-METAL TRANSFER OF RYE

Rye was cultivated in pots on original sewage field soils and an artif icially polluted soil. The weakly polluted sewage field soil (referenc e soil R) was contaminated with 2,2',5,5'-tetrachlorbiphenyl, Benzo-a- pyren, cadmium or copper as well as with combinations of these organic pollutants and heavy metals. These treatments were compared with an e xtremely contaminated sewage field soil (Grossbeeren GB). Rye cultivat ed on the artificially polluted soil (R) showed typical symptoms of da mage which were similar to effects on the extremely contaminated sewag e field soil (GB). Damage from single substance substance copper was s ometimes greater than those observed on soil GB. This may indicate int eractions or synergistic effects.