DuPont Business Pioneer Hi-Bred Corn Yield Data Supports Continued Market Share Gains in North America

DES MOINES, Iowa,Dec. 7, 2009 – Growers planting Pioneer® brand corn hybrids are seeing solid product performance as this challenging harvest season ends. On-farm field trials show that hybrids from DuPont business Pioneer Hi-Bred are once again delivering competitive yield advantages.

In addition, growers harvesting Pioneer products are seeing the complete performance advantage that these hybrids deliver in the areas of disease resistance, grain quality and high test weights.

In over 85,000 comparisons across North America comparing Pioneer hybrids to the best competitor hybrids, Pioneer hybrids are out-yielding competitor products by 1.7 bushels per acre (bu/ac). Among specific segments in these same trials, Pioneer hybrids with double-stacked traits are out-yielding similar competitive products by 5.6 bu/ac. Among products with glyphosate-tolerant traits, Pioneer hybrids have an advantage of 4.1 bu/ac and, among conventional hybrids, Pioneer products show a yield advantage of 4.2 bu/ac. Pioneer hybrids are at parity with comparative triple-stacked products which represents a significant performance improvement over the last four years.

These yield advantages are particularly impressive in light of a production year that has provided challenges to growers throughout the Corn Belt.

“The results we’re seeing in the field support another year of strong growth in market share,” said Frank Ross, Pioneer vice president and regional director, North America. “Our approach of matching the right product with the right acre is paying off and the result is that current orders are keeping the same pace as last year’s invoicing progress, which was a record year of growth for Pioneer.”

Local Pioneer teams are working to advance products in a new corn hybrid class that maintains agronomic strengths and improves performance s. those planted in 2009. All of these efforts are coupled with one of the world’s largest and most diverse corn germplasm pools, resulting in better hybrid performance and consistency over multiple years and environments.

In conjunction with today’s announcement, additional details and regional summaries of these competitive yield comparisons are available at investors.dupont.com.

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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12/7/08

The DuPont Oval Logo, DuPont™, The miracles of science™ and Pioneer® are registered trademarks or trademarks of DuPont or its affiliates.

Contact: Doyle Karr

515-270-3428

doyle.karr@bio1.dupont.com

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