Canada to extend registration of Loveland's Rampart fungicide

The Canada's Pest Management Regulatory Agency (PMRA) has proposed full registration for the sale and use of Loveland's Rampart Technical and Rampart Fungicide, containing the technical grade active ingredient mono- and di-potassium salts of phosphorous acid, to suppress downy mildew in greenhouse cucumbers. The agency has opened public comments for 45 days until Oct 10, 2015.

Rampart Technical and Rampart Fungicide are fully registered for use in Canada on certain field grown vegetables and fruit, as well as for post-harvest treatment on stored potatoes. The active ingredient, mono- and di-potassium salts of phosphorous acid, is fully registered for use in greenhouses in Canada, however, the current applications represent a major new use in greenhouses for this source of the active ingredient.

Mono- and di-potassium salts of phosphorous acid (commonly known as phosphorous acid) are phosphonate fungicides belonging to the Group 33 class of fungicides as designated by the Fungicide Resistance Action Committee. It may inhibit the metabolism of susceptible fungal pathogens, and stimulate the plant's natural defence response to pathogen attack.