US approval for Syngenta's Callisto GT
Syngenta has received US approval for a pre-mixed formulation of its established herbicides, Callisto (mestrione) and Touchdown (glyphosate). Callisto GT (mesotrione 46 g/litre + glyphosate 456 g/litre) provides post-emergence control of emerged broadleaf weeds and grasses plus residual broadleaf weed control in genetically modified glyphosate-tolerant maize. It is recommended for use at 32 fl oz/acre (1 litre/ha) as a post-emergence application. "Market research shows 85% of treated Callisto acres are tank-mixed with glyphosate, so we have formulated this pre-mix to provide added convenience for growers and channel partners," says technical product lead Gordon Vail.