Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

The relevant results from the available terrestrial toxicity studies with DOPA-Glycinate are briefly summarised in the following tables.

Acute toxicity to soil micro-flora:

Guideline / Test method

Test system

Endpoint/ Type of test

Exposure

Results [mg a.s./kg]

Remarks

Design

Duration

NOEC

EC10

EC50

OECD 216 and 217

Agricultural soil samples

Nitrogen turnover (nitrate and ammonium formation), respiration (O2consumption)

Static

28 d

≥ 1000

n.d.

> 1000

 

Acute toxicity to soil invertebrates (earthworms):

Guideline/ Test method

Species

Endpoint/ Type of test

Exposure

Results [mg a.s./kg]

Remarks

Design

Duration

LC0

LC50

LC100

OECD 207, EC C.8, artificial soil test

Eisenia fetida

Mortality

Static

14 d

> 1000

≥ 1000

≥ 1000

 

Acute toxicity to terrestrial plants:

Guideline/ test method

Species

Endpoint/ type of test

Exposure

Results [mg a.s./kg]

Remarks

Design

Duration

EC20

EC50

OECD 208, 208A (2006)

Triticum aestivum

Sinapis alba

Raphanus sativus

Phaseoulus aureus

Lactuca sativa

Avena sativa

Fresh shoot biomass

Pathological symptoms

Seedling emergence

Static

27–29 d

(14 days after emergence of 50 % of the control seedlings)

n.d.

363–1000, depending on the species

The test item had a mild inhibitory effect on growth in five of the six tested plant species (exceptTriticum aestivum). With respect to seedling emergence, there was only a mild inhibitory effect in two of the six tested plant species (Lactuca sativa, Sinapis alba)

 

n.d. = not determinable

The results of the available tests on the toxicity of DOPA-Glycinate to soil organisms indicate that the active substance is not acutely toxic to terrestrial organisms (effect concentrations > 1000 mg/kg for microorganisms and earthworms). In plants, only a mild inhibitory effect was noted in a fraction of the six tested species. The lowest EC50-value was observed in Lactuca sativa (363 mg a.i./kg). However, the effects were only moderate, with the growth rate never being inhibited by more than 50 % in any species. Thus, the lowest relevant EC50 value to be forwarded to the risk assessment was identified for Lactuca sativa, determined at 363 mg a.i./kg dry soil.