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Toxicity to soil macroorganisms except arthropods

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Description of key information

Acute toxicity to Eisenia fetida was tested in a study according to EPA/600/3-88/029 (1988) using Ammonium chloride as test substance (CAS: 12125 -02 -9). The 14d- LC50 value was 201 mg/kg soil (Yeardley et al. 1995, value related to Ammonium sulphate). Ma et al. (1990) studied long-term effects (20 yr) on nitrogenous fertilizers usage on lumbricid earthworms in soil. This study revealed that, Ammonium sulphate (5 applications per year of 60 -180 kg N/ha had effects on earthworm numbers and biomass. However, the effects were attributed to the lowering of pH observed in parallel with Ammonium sulphate application in the absence of liming.

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
201 mg/kg soil dw

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