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EC number: 428-650-4 | CAS number: 153719-23-4
Table: Effect rates of the test substance on 21-day emergence and survival
Survival (g a.s./ha)
Percentage emergence (g a.s./ha)
Zea mays (corn)
Avena sativa (oat)
Allium cepa (onion)
Lolium perenne (perennial ryegrass)
Phaseolus vulgaris (common bean)
Cucumis sativa (cucumber)
Brassica napus (oilseed rape)
Pisum sativum (pea)
Glycine max (soybean)
Beta vulgaris (sugar beet)
Table: Effect rates of the test substance on 21-day shoot length and shoot dry weight
Shoot length (g a.s./ha)
Shoot dry weight (g a.s./ha)
The toxicity to terrestrial plants was determined in a Seedling Emergence and Seedling Growth Test according OECD guideline No 208 and in compliance with GLP criteria. In this study, ten plant species (six dicotyledonous and four monocotyledonous species, representing ten plant families) were exposed to nominal test concentrations of 0 (control), 18.63, 37.25, 74.5, 149 and 298 g a.s./ha. The test item was applied by a laboratory sprayer with a volume of 100 L/ha. Test concentrations were not analytically verified and thus test concentrations are given as nominal. The exposure time was 14 to 21 days after 50% germination in the control, depending on the growth of the seedlings. Emergence and morphological abnormalities were determined during the test and shoot length, tallest new growth (dicots), longest leaf length (monocots) and dry weight were determined at study termination. Of the ten crops tested, only one displayed signs of toxicity; Cucumis sativa (cucumber) showed a decrease in shoot length at study termination. However, insufficient to determine a ER50 and no other effects were observed for this crop throughout the study. Based on these results, the overall 21-d ER50 was determined to be > 298 g a.s./ha for all species, equivalent to 0.4 mg/kg soil dw.
All available data were assessed and the studies representing the worst-case effects were included as key or weight-of-evidence studies. Other studies are included as supporting information. The key studies are considered to be worst-case and were selected for the CSA.
The 21-d ER50 value is >298 g a.i/ha, equivalent to 0.4 mg/kg soil dw, determined by OECD TG 208, Martin, 2013
No quantitative acute effect value (ER50) can be determined as no ≥50% effect was reached in the study.
Table: Overview of available data on the toxicity to plants
Guideline / GLP
OECD TG 208 / GLP
>298 g a.i/ha soil dw (=0.4 mg/kg soil dw; recalculated by the registrant)
No significant toxicity was observed in all species based on emergence, survival, shoot length and shoot dry weight.
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