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Diss Factsheets

Administrative data

Endpoint:
additional ecotoxicological information
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The study was conducted according to acceptable scientific principles however it is not conducted according to or similar to a standard guideline. No mention of GLP.

Data source

Reference
Reference Type:
publication
Title:
Absorption of aqueous inorganic and organic silicon compounds by wheat and their effect on growth and powdery mildew control.
Author:
Cote-Beaulieu, C. Chain, F. Menzies, J.G. Kinrade, S.D. Belanger, R.R.
Year:
2009
Bibliographic source:
Environmental and experimental botany, 65: 155-161

Materials and methods

Test guideline
Qualifier:
no guideline followed
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Silicic acid
EC Number:
215-683-2
EC Name:
Silicic acid
Cas Number:
1343-98-2
IUPAC Name:
oxosilanediol
Details on test material:
- Name of test material (as cited in study report): potassium silicate

- Other: Kasil #6, National Silicates, Toronto, ON, Canada.

Results and discussion

Applicant's summary and conclusion

Conclusions:
Triticum aestivum (wheat) seeds phytotoxicity in the presence of silicic acid was assessed by watering the plants with 0.17 mM of Si(OH)4 for 10 days after germination, 1 L/week. In addition a hydroponic system was set up to assess the effects of silicic acid on the protection of wheat from mildew . Silicic acid did not induce any phtotoxicity effects based on visual observation of plant growth and devlopment. The test substance did offer protection against powdery mildew based on percentage leaf coverage.