Pioneer Hi-Bred Innovation to Increase Corn Yields, Simplify Compliance

Optimum® AcreMaxTM new insect protection system introduced to U.S. farmers

DES MOINES, Iowa, March. 4, 2008 - DuPont business Pioneer Hi-Bred introduced the first "in-the-bag" seed refuge system to farmers during Commodity Classic, the industry's premier agricultural trade show and convention.

The new insect protection system, Optimum® AcreMaxTM, will provide corn growers with improved productivity by increasing the number of acres farmers can plant to the industry's most advanced insect control options. The first phase of Optimum® AcreMaxTM insect protection will be launched as early as 2009, pending regulatory approval. The system will eliminate the need for farmers to plant separate corn borer and corn rootworm refuges with their Pioneer® brand Bt corn hybrids.

"Pioneer is using innovation and science, and the strongest traits in the industry, to give U.S. growers a superior solution to protect crops from yield-robbing insect damage," said Frank Ross, Pioneer vice president, North America Operations. "For the first time, farmers will be able to plant all their acres with a single product that satisfies refuge requirements."

The Optimum® AcreMaxTM system is made possible through the industry-leading insect control technology of Herculex® XTRA, which not only provides the most effective control of corn rootworm, but also is highly effective against above-ground insects including corn borer, western bean cutworm and black cutworm.

"The Optimum® AcreMaxTM system will help farmers as soon as next year - well ahead of any of our competitors," said Bill Niebur, DuPont vice president, Crop Genetics Research and Development. "And each generation of the Optimum® AcreMaxTM system will build on the last, bringing farmers greater convenience, yield potential and efficacy."

Optimum® AcreMaxTM 1 Insect Protection

Pioneer plans to launch the first phase of the system, Optimum® AcreMaxTM 1 insect protection in 2009, pending regulatory approval. Optimum® AcreMaxTM 1 will eliminate the need for a farmer to plant a separate corn rootworm refuge. Pending regulatory approval, the first phase will be a combination of a base hybrid with the Herculex XTRA trait and that same base hybrid with the Herculex I trait, all in the same bag. This approach would reduce the need to plant a separate rootworm refuge and increase the number of acres planted to the industry's best below-ground pest protection.

All of the seeds will be glyphosate- and glufosinate-tolerant and treated with an insecticidal seed treatment that protects the seed from secondary below-ground insect pests.

Earlier this week, DuPont reached a milestone in the commercialization of Optimum® AcreMaxTM 1 with the formal submission of its regulatory dossier to the EPA.

"We're confident our scientific and field trial data supports the approval of our novel approach to more effectively manage insect pests in corn," said Niebur.

Optimum® AcreMaxTM 2 Insect Protection

Beginning as soon as 2011, Pioneer plans to introduce the next generation of its integrated insect protection program - Optimum® AcreMaxTM 2 insect protection. Optimum® AcreMaxTM 2 will combine the YieldGard® corn borer gene with Herculex® XTRA, providing two modes of action for above-ground pests. This addition will extend the integrated refuge strategy to include corn borer and allow growers to meet all of their refuge requirements with a single product. Pending EPA approval, this approach will result in a low-level refuge integrated in the product mix to increase yields, simplify compliance, extend the durability of the traits and completely eliminate the need for a separate block or strip refuge.

Expanding Protection for Growers

DuPont recently announced a trait access agreement with Syngenta for its MIR162 trait that allows Pioneer to commercialize a unique product solution for farmers dealing with secondary insect pests. The MIR162 trait will be integrated into future insect protection products to provide a second, and in some cases, third mode of action for above-ground pests such as corn ear worm, southwestern corn borer, western bean and black cutworm, fall army worm and sugarcane borer. Pending regulatory approval, this advanced insect control system will allow corn farmers in the South to plant more of their acres to Bt corn - increasing their overall yields and productivity and simplifying their farm operations. This combination of technologies also could provide an expanded insect control solution for farmers in other countries.

Pioneer Hi-Bred, a DuPont business, is the world's leading source of customized solutions for farmers, livestock producers and grain and oilseed processors. With headquarters in Des Moines, Iowa, Pioneer provides access to advanced plant genetics in nearly 70 countries.

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.

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