Registration Dossier

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Adequacy of study:
other information
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The test was not performed under GLP and not according to standard protocol. Details are missing on the test method, it is not known how the chlorate was analysed. No information is given on the characteristics of the soils. Therefore this study is considered invalid.

Data source

Reference
Reference Type:
publication
Title:
The impact of application of chlorates in longan plantations on|the environment and the remedy. 17th WCSS, 14-21 August 2002, Thailand
Author:
Ongprasert, S., Sutikoolabud, P. and Aumtong, S.
Year:
2002
Report Date:
2002

Materials and methods

Principles of method if other than guideline:
own method
Type of measurement:
other: residues
Media:
soil

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

RS-Freetext:
The application rate of chlorate ranged from 200-500 g/plant
in 1999 to 500-1000 g/plant in 2000. The analyses were done
from 2-540 days after application of chlorate. Chlorate
found in the topsoils at the application strips a few days
after application was 136 to 340 mg/kg. Under farmers'
management these concentrations reduced to 34.0-68.0 mg/kg,
within 55-155 days.
The residues of chlorate decreased over time to less than 24
mg/kg within 75 to 360 days in low fertile soils and to less
than 10 mg/kg in high and medium fertile soils.

Applicant's summary and conclusion