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Ecotoxicological information

Toxicity to terrestrial plants

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Reference
Endpoint:
toxicity to terrestrial plants: short-term
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
equivalent or similar to
Guideline:
EPA OPPTS 850.4100 (Terrestrial Plant Toxicity Tier I (seedling emergence))
GLP compliance:
not specified
Analytical monitoring:
yes
Vehicle:
yes
Species:
other: Medicago sativa L.
Plant group:
Dicotyledonae (dicots)
Details on test organisms:
other name: Alfalfa
Test type:
seedling emergence toxicity test
Study type:
laboratory study
Substrate type:
natural soil
Total exposure duration:
16 d
Remarks:
Weathered/aged treatment
Species:
other: Medicago sativa L.
Duration:
5 d
Dose descriptor:
LOEC
Effect conc.:
ca. 215 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
seedling emergence
Remarks on result:
other: p≤0.05
Species:
other: Medicago sativa L.
Duration:
5 d
Dose descriptor:
EC50
Effect conc.:
> 50 - < 188 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
seedling emergence
Remarks on result:
other: 95% CL
Species:
other: Medicago sativa L.
Duration:
16 d
Dose descriptor:
LOEC
Effect conc.:
ca. 10 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: Shoot fresh mass
Remarks on result:
other: p≤0.05
Species:
other: Medicago sativa L.
Duration:
16 d
Dose descriptor:
EC50
Effect conc.:
> 4 - < 12 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: Shoot fresh mass
Remarks on result:
other: 95% CL
Species:
other: Medicago sativa L.
Duration:
16 d
Dose descriptor:
LOEC
Effect conc.:
ca. 0.1 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: Shoot dry mass
Remarks on result:
other: p≤0.05
Species:
other: Medicago sativa L.
Duration:
16 d
Dose descriptor:
EC50
Effect conc.:
> 2 - < 7 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: Shoot dry mass
Remarks on result:
other: 95% CL

Description of key information

5 days, Medicago sativa L., lowest EC50 based on available data

Key value for chemical safety assessment

Short-term EC50 or LC50 for terrestrial plants:
50 mg/kg soil dw

Additional information