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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

Determination of Effects on Nitrogen Transformation of Soil Microflora 

Key value for chemical safety assessment

Short-term EC50 for soil microorganisms:
1 600 mg/kg soil dw
Long-term EC10 or NOEC for soil microorganisms:
1 600 mg/kg soil dw

Additional information

FR-370 showed no inhibitory effects on soil microflora activity in the study of 'Nitrogen Transformation of Soil Microflora' . Therefore, it can be concluded that the addition of FR-370 ranging from 100 to 1600 mg/kg dry soil does not adversely affect treated soil samples as compared to the control samples. Correspondingly, it can be concluded that the empirically estimated EC50, on nitrate transformation is >1600 mg/kg dry soil, whereas the empirically estimated NOEC for the same parameter is considered to be ≥1600 mg/kg dry soil.