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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

EC50 could not be determined as even at the highest test concentration growth rate was not reduced by 50%. For both test species Avena sativa and Brassica napus EC50 is beyond 1000 g/kg soil d.w..

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Additional information

On behalf of the VGB PowerTech e. V. the toxicity of ashes to plants was assessed by Roembke (2008) according to the ISO 11269-2 (1995). During an exposure period of 14 days the plant species Avena sativa and Brassica napus were exposed to different concentrations of fly ash in soil.

The tested fly ash (FA1) was structural related to ash (residues), cenospheres and as cenospheres are a component of fly ash, these results can be used as read across.

Fly ashes showed no or only slight growth reduction at concentration of greater than 1000 g/kg soil d. w. EC50 could not be determined as even at the highest test concentration growth rate was not reduced by 50%. For both test species Avena sativa and Brassica napus EC50 is beyond 1000 g/kg soil d. w.