US approved Syngenta's Callisto® GT herbicide

Syngenta announces that Callisto® GT post-emergence herbicide has received registration from the U.S. Environmental Protection Agency(EPA) and all major corn-producing states.

A premixed formulation of Callisto and Touchdown® herbicides, Callisto GT provides convenience and superior post-emergence control of emerged broadleaf weeds and grasses, plus residual broadleaf weed control in glyphosate-tolerant corn.

“Resistant weeds have changed growers weed control strategies, and glyphosate is now best used in a tank mix to control targeted weeds,” said Gordon Vail, technical product lead with Syngenta. “Market research shows 85 percent of treated Callisto acres are tank mixed with glyphosate, so we have formulated this premix to provide added convenience for growers and channel partners.”

R&D trials conducted in 2012 showed that Callisto GT provided 95 percent control of pigweeds, including waterhemp, Palmer amaranth and redroot pigweed. When AAtrex® 4L herbicide was added, control increased to 97 percent.

“Atrazine is an excellent tank-mix partner,” said Vail. “Atrazine adds an additional mode of action for weed-resistance management. If atrazine cannot be used, a dicamba product like NorthStar® can be used to provide a different mode of action in the battle against resistant weeds.”

Callisto GT targets emerged broadleaf weeds and grasses, such as Palmer amaranth, lambsquarters, waterhemp and ragweeds. Following a post-emergence application in up to 30-inch corn, susceptible weeds take up the herbicide through the treated foliage and cease growth soon after application.

“As the newest addition to the Callisto Plant Technology® (CPT) family of corn herbicide brands, Callisto GT provides growers with greater convenience, top performance and a solution to help farmers grow more corn,” said Vail. Other CPT brands include Halex® GT, Lexar® EZ, Lumax® EZ, Callisto Xtra and Zemax®.