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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for terrestrial plants:
25.6 mg/kg soil dw

Additional information

Toxicity on plants has been tested in a study according to test guideline OECD208 with six different species for 21 to 28 days and is therefore suitable for long-term assessment. In the test the plant species oats, onion, sugar beet, rape, lettuce, and soybean has been tested. During the test period, no test substance related phytotoxic effects and mortality occurred. No significant effects on the emergence rate of seedling have been observed for all tested plant species. Therefore, the NOEC of emerged seedling is ≥1000 mg/kg dw for all tested species. The shoot height of oats, sugar beet and lettuce were not significantly affected. The NOEC for these species is ≥1000 mg/kg dw. Slight effects on the shoot height were observed for onion, rape, and soybean. Therefore the NOEC on shoot height has been determined to be 160 mg/kg dw for onions and 400 mg/kg dw for rape and lettuce. The EC25 of shoot height is >1000 mg/kg dw for all tested species.

Effects on the shoot fresh weight were observed in all tested species. However, the EC50 on shoot fresh weight could not be derived and is >1000 mg/kg dw for all tested species. The NOEC for shoot fresh weight is 160 mg/kg dw for onions, and 400 mg/kg dw for oats, sugar beet, rape and soybean. The most sensitive species has been lettuce with a NOEC of 25.6 mg/kg dw for shoot fresh weight and an EC25 of 60.4 mg/kg dw. The EC25 of the other species were in the range of 393 to >1000 mg/kg dw.

Overall, the NOEC on shoot fresh weight for lettuce of 25.6 mg/kg dw has been the lowest effect value.