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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

EC50 > 1000 mg a.i./kg soil dw (nitrogen and carbon transformation by soil microorganisms); OECD guidelines 216 and 217, GLP

Key value for chemical safety assessment

Short-term EC50 for soil microorganisms:
1 000 mg/kg soil dw

Additional information

The effect of DOPA-Glycinate (20% a.i., as manufactured) on nitrogen and carbon transformation by soil microorganisms was investigated according to the OECD guidelines 216 and 217. The test item was incorporated into loamy sand soil at nominal concentrations of 1.64, 4.10, 10.24, 25.6, 64, 160, 400, and 1000 mg a.i./kg dry mass at test start. The effects on nitrogen transformation and short-term respiration were determined 28 days after start of incubation.

With respect to the nitrogen transformation capacity and short-term respiration, no inhibitory effect of the test item was observed. The NOEC for both, nitrogen and carbon transformation was >/= 1000 mg a.i./kg dry soil. The EC50 was > 1000 mg a.i./kg dry soil.