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Ecotoxicological information

Toxicity to terrestrial plants

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Administrative data

Endpoint:
toxicity to terrestrial plants
Type of information:
other: EU Risk Assessment
Adequacy of study:
other information
Reliability:
other: EU Risk Assessment
Rationale for reliability incl. deficiencies:
other: No reliability is given as this is a summary entry for the EU RAR.

Data source

Referenceopen allclose all

Reference Type:
secondary source
Title:
Unnamed
Year:
2003
Reference Type:
study report
Title:
Unnamed
Year:
1984
Reference Type:
publication
Title:
Phytotoxicity studies with Lactuca sativa in soil and nutrient solution.
Author:
Hulzebos EM et al.
Year:
1993
Bibliographic source:
Environ. Toxicol. Chem., 12, 1079-1094.

Materials and methods

Principles of method if other than guideline:
EU Risk Assessment
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

EU Risk Assessment (2003):

Toxicity tests on higher plants are performed on lettuce, which was chosen because it is sensitive to different organic compounds and easy to handle. A part of the study has been performed in soilless solution, to test the sensitivity during continuous exposure of 1,2,4-TCB in water. For lettuce Lactuca sativa exposed in a semi-static test with the roots in water containing 1,2,4 -TCB, the EC50 (16-21 days) was 0.6 mg/l (Hulzebos et al., 1993).

The study on oats and turnip used a field soil with 1.54% OC. and performed in climate chambers (Ballhorn et al., 1984). Due to volatilisation in the open soil the EC50 (294 and 316 mg/kg dry soil) is not correct as a growth reduction was seen in the control plants probably affected by volatile substance or from condense water. The initial concentrations were used in the estimations. In Broecker et al. (1984), the same plants studied according to OECD TG 208 resulted in an EC50 of 40 mg/kg (EC0 of 10 mg/kg) for oats and an EC50 of 110 mg/kg (EC0 of 1) for turnips (Broecker et al., 1984).

Applicant's summary and conclusion