Registration Decision RD2020-07, Trichoderma asperellum strain T34, Asperello T34 Biocontrol

Pest Management Regulatory Agency
30 April 2020
ISSN: 1925-0940 (PDF version)
Catalogue number: H113-25/2020-7E-PDF (PDF version)

Table of Contents

Registration decision statementFootnote 1 for Trichoderma asperellum strain T34

Health Canada’s Pest Management Regulatory Agency (PMRA), under the authority of the Pest Control Products Act, is granting registration for the sale and use of T34 Biocontrol Technical, and Asperello T34 Biocontrol, containing the technical grade active ingredient Trichoderma asperellum strain T34, to be used against certain fungal diseases on greenhouse ornamentals, cannabis produced commercially indoors and greenhouse vegetables.

This decision is consistent with the Proposed Registration Decision PRD2020-03, Trichoderma asperellum strain T34, Asperello T34 Biocontrol, which contains a detailed evaluation of the information submitted in support of this registration. The evaluation found that, under the approved conditions of use, the health and environmental risks and the value of the pest control products are acceptable. See Appendix I for a summary of comments received during the consultation process as well as Health Canada’s response to these comments.

Other information

The relevant test data on which the decision is based (as referenced in PRD2020-03, Trichoderma asperellum strain T34, Asperello T34 Biocontrol) 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 (

Any person may file a notice of objectionFootnote 2 regarding this registration decision within 60 days from the date of publication of this Registration Decision. For more information regarding the basis for objecting (which must be based on scientific grounds), please refer to the Pesticides Section of the website (Request a Reconsideration of Decision) or contact the PMRA’s Pest Management Information Service.

Appendix I    Comments and responses

Comment relating to the storage stability of the end use product

A comment was received that indicated available information supported the claim the end use product will be viable for 2 years when stored in a cool dry place (4 ºC).

PMRA Response

The PMRA agrees with the comment and the following label statement is acceptable on the product label.

STORAGE: ASPERELLO T34 Biocontrol should be stored in a cool dry place (4 ºC). At this temperature, the product is viable for two years. Do not contaminate water, food, or feed during storage. Keep product in original container during storage and keep container lid tightly closed when not in use.

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