Syngenta Crop Protection has announced Callisto Xtra as the brand name for a new, post-emergence corn herbicide that will be an excellent tank mix partner for glyphosate in glyphosate-tolerant corn.

Expected to receive U.S. Environmental Protection Agency registration during the first quarter of 2010, Callisto Xtra combines the proven performance of two leading herbicides, Callisto and AAtrex, which perform synergistically to deliver long-lasting residual broadleaf weed control.  

"The weed control delivered from Callisto Xtra is better than expected based on the control from the individual components," said Gordon Vail, herbicide technical brand manager, Syngenta Crop Protection. "In other words, the whole is greater than the sum of its parts; one plus one equals three."

The combination of Callisto and AAtrex also make Callisto Xtra an excellent tool for resistant weed management. Vail says the two modes of action will provide enhanced control of broadleaf weeds that are becoming harder to manage with glyphosate alone.

"We will continue to provide Callisto to the market for use in corn greater than 12 inches in height, atrazine restricted areas, and for the wide range of other crops for which Callisto is registered," said Carroll Moseley, herbicide brand manager, Syngenta Crop Protection. These include cranberry, blueberry, lingonberry, flax, pearl millet, asparagus, bluegrass grown for seed, perennial ryegrass grown for seed, tall fescue grown for seed, oats, rhubarb, grain sorghum and sweet sorghum. In addition to corn, Callisto Xtra will also be registered for use in sugarcane.