Registration Decision RD2017-04, Tebuconazole

Pest Management Regulatory Agency
22 February 2017
ISSN: 1925-0940 (PDF version)
Catalogue number: H113-25/2017-4E-PDF (PDF version)

Table of Contents

Registration Decision StatementFootnote 1 for Tebuconazole

Health Canada’s Pest Management Regulatory Agency (PMRA), under the authority of the Pest Control Products Act and Regulations, is granting full registration for the sale and use of Folicur Technical Fungicide and Mirage Stressgard containing the technical grade active ingredient tebuconazole for control of diseases of turfgrass on golf courses and sod farms.
This decision is consistent with the Proposed Registration Decision PRD2016-33, Tebuconazole, whichcontains a detailed evaluation of the information submitted in support of this registration. The evaluation found that, under the approved conditions of use, the products have value and do not present an unacceptable risk to human health or the environment. The PMRA received no comments on PRD2016-33, Tebuconazole; however, the PMRA noticed that information was missing from Table 7 of PRD2016-33. Please refer to Appendix I for an addendum to Table 7.

Other Information

The relevant test data on which the decision is based (as referenced in PRD2016-33, Tebuconazole)are available for public inspection, upon application, in the PMRA’s Reading Room (located in Ottawa). For more information, please contact the PMRA’s Pest Management Information Service by phone (1-800-267-6315) or by e-mail.

Appendix I Comments and Responses

  1. Upon publication of PRD2016-33, Tebuconazole, it was noticed that information pertaining to honeybees was missing from Table 7.

As described on page 23 of the Science Evaluation text for PRD2016-33, Tebuconazole, the environmental risk assessment indicated that the level of concern is not exceeded for honeybee exposure to tebuconazole. Below is an addendum to Table 7.

Table 7. Screening Level Risk Assessment for Non-Target Terrestrial Invertebrates and Plants Exposed to Tebuconazole (Maximum Multiple Application Scenario: 1536 g a.i./ha x 2 apps)
TERRESTRIAL INVERTEBRATES - Exposure to direct overspray
Organism Ecotox Endpoint Descriptor: Substance Ecotox Endpoint Value Converted Ecotox Endpoint ValueTable 1 footnote c Enviro Exposure (EEC) ValueTable 1 footnote d Enviro Exposure (EEC) Units RQ LOC Exceeded
HoneybeeTable 1 footnote a Acute Contact (LD50): TEU 176 176 7.4 µg a.i./bee 0.042 No
Footnote a

Ecotoxicity Value for honeybees from REG2006-11, Tebuconazole

Return to footnote a referrer

Footnote c

No conversion required for honeybee Ecotoxicity Value.

Return to footnote c referrer

Footnote d

Exposure = application rate (kg a.i./ha) x adjustment factor of 2.4 µg a.i./bee per kg a.i./ha for contact exposure.

Return to footnote d referrer

Report a problem or mistake on this page
Please select all that apply:

Thank you for your help!

You will not receive a reply. For enquiries, contact us.

Date modified: