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PMRA Guidance on Unlabeled Mixes of Commercial Pest Control Products
(November 2010)

In November 2010, PMRA released an FAQ to provide guidance on the use of unlabeled tank mixes of commercial class pest control products used for crop production or vegetation management.

In October 2009, the Pest Management Regulatory Agency (PMRA) published a memorandum to all applicants, registrants and their regulatory representatives regarding the use of unlabeled tank mixes of commercial class pest control products used for crop production or vegetation management. In order to provide guidance, PMRA answered a number of frequently asked questions (FAQs) to clarify how the memorandum is to be interpreted. The answers are provided under the assumption that the six conditions, described in the memorandum, have all been met.

The specific conditions described in the memorandum are as follows:

▲ Each tank mix partner is registered for use in Canada on the crop of interest, including genetically modified crops.
▲ The tank mix only includes an adjuvant, when specifically required by one of the tank mix partner labels. If an adjuvant is not required on the label of any
tank mix partner, then no adjuvant may be added to the tank mix.
▲ The application timings of all tank mix partners are compatible with crop and pest staging.
▲ Each tank mix partner is applied in accordance with its registered product label (i.e. directions for use, precautions, buffer zones, etc)
▲ The tank mix is not specifically excluded or contraindicated on either tank mix partner label.
▲ The use of the tank mix provides addition value to the user (i.e. increased scope of pests controlled, contributes to resistance management or
integrated pest management, cost or time savings).

Some of the answers make reference to use-site categories (USC). The PMRA has developed and described USCs to group use scenarios (a combination of the purpose of the pesticide and where it is used) that are similar in nature, as a guide for developing data requirements.

For a list of the FAQs and answers, click
here.

For more information, please Contact TSG.
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