Canada approves Fenazaquin, Magister SC Miticide/Fungicide, and Magus SC Miticide

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 Fenazaquin Technical Miticide/Fungicide, Magister SC Miticide/Fungicide and Magus SC Miticide containing the technical grade active ingredient fenazaquin to control certain mites, psylla, whitefly, and powdery mildew on a variety of crops and ornamental plants.

Fenazaquin is a conventional chemical miticide, insecticide and fungicide that acts by disrupting energy production within the cells of certain mites, insects and fungi. It is the active ingredient in the commercial class products Magister SC Miticide/Fungicide and Magus SC Miticide, which provide control of the target mite, insect and fungal pests on a variety of food crops as well as indoor and outdoor ornamental plants.

Magister SC Miticide/Fungicide and Magus SC Miticide provide a new active ingredient, and in most cases a new mode of action, for control of important mite and insect pests of food crops and ornamental plants, and for control of powdery mildew diseases of food crops.

Magister SC Miticide/Fungicide provides control of certain mites, including spider mites, and powdery mildew on a variety of terrestrial food crops, pear psylla on pear, spider mites on indoor and outdoor ornamental plants, and sweetpotato whitefly on indoor ornamentals. Magus SC Miticide provides control of certain spider mites on indoor and outdoor ornamental plants and sweetpotato whitefly on indoor ornamentals. These products provide a new active ingredient for all of their uses and a new mode of action for most of their uses, which will aid in the management of resistance to pest control products already registered for those uses.

The Proposed Registration Decision PRD2022-11, Fenazaquin, Magister SC Miticide/Fungicide, and Magus SC Miticide, containing the detailed evaluation of the information submitted in support of this registration, underwent a 45 day consultation period ending on October 13, 2022. 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. Health Canada received comments (and information) relating to the health, environmental and value assessments during the public consultation period conducted in accordance with section 28 of the Pest Control Products Act.