GREENSBORO, N.C. -- Alto(R) fungicide from Syngenta Crop Protection has been granted Section 18 quarantine exemption registration by the EPA for use in soybeans to control Asian soybean rust in Minnesota and South Dakota.

The Section 18 Exemption for Alto, active ingredient cyproconazole, allows growers to apply the fungicide to control soybean rust (Phakopsora pachyrhizi) in Minnesota and South Dakota, the first two states to receive Section 18s of the 19 states requesting the exemption.

Alto, a new triazole tankmix partner for Quadris(R), provides curative control of soybean rust. During use in South America, cyproconazole has shown that its improved triazole chemistry controls soybean rust as well or better than currently used triazole fungicides. With rapid fungicide uptake and flexible application timing, Alto makes treatment fast and convenient, Syngenta said.

"Soybean rust is a highly destructive pathogen," said Marty Wiglesworth, technical fungicide brand manager with Syngenta Crop Protection. "In the case of a soybean rust outbreak, a grower can lose 60 percent to 80 percent of yield from early defoliation and poor pod-fill without a properly timed fungicide. Alto prevents yield loss, providing rust control with little chance of leaf burning."

The powerful, crop-safe triazole in Alto has been shown to control rust better than other triazoles. Syngenta said a combination of Quadris and Alto will provide the longest-lasting residual disease control to protect against rust, while enhancing soybean yields and quality.

"For the best protection against soybean rust, a tankmix of Quadris and Alto should be used as a preventive treatment," said Wiglesworth. "Our research has shown that the first point a grower should consider a soybean rust fungicide spray would be at the R1/R2 stage, should the risk for rust be high."

Growers in areas granted a Section 18 can contact their local retailers or Syngenta representatives for use rates, application timing and other product information.

More information from Syngenta about soybean rust is available from local retailers, Syngenta sales representatives, at 888-SOYRUST, or at

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2005 were approximately $8.1 billion. Syngenta employs some 19,000 people in more than 90 countries.

SOURCE: Syngenta news release.