Strong yield, agronomic performance in North America and positive momentum in Brazil

In a briefing today with investment analysts, DuPont (NYSE: DD) said its subsidiary Pioneer Hi-Bred International, Inc. is seeing strong product performance from its seed products from this year's harvest in North America and continues to grow in Brazil despite a difficult agricultural economy in that country.

"With the results in on almost 20,000 field tests, Pioneer corn is averaging 6 bushels per acre more than competitors' products, a 50 percent increase in the Pioneer corn yield advantage over last year," said William
S. Niebur, vice president -- DuPont Crop Genetics Research & Development. "We are especially excited about the performance we are seeing from our newer corn products."

"The new corn hybrids yielded 8.6 bushels better on average across nearly 2,000 comparisons against competitive corn hybrids," said Niebur.

Niebur said Pioneer soybean varieties also out-yielded the competition on average again in 2006. Pioneer soybeans developed with proprietary marker technology have delivered yield gains three times the industry
average over the past five years.

"Growers have recognized the performance advantages of Pioneer soybeans. Pioneer North America soybean market share has increased by six points in five years," said Niebur.

In North American corn, the Herculex® family of traits is also providing control against a broader range of insects and is providing more consistent corn rootworm protection than other in-plant products on the
market. Niebur said that the company is making good progress in ramping up the right trait packages that will realize the full potential of plant genetics and further improve farmer yields and economics.

As growers in North America are completing their harvest, farmers in Brazil are finishing planting for corn and soybeans.

"The agricultural economy in Brazil is as tough as it has been in a number of years," said Paul Schickler, Pioneer vice president for International Operations. "But, thanks to our strong customer relationships and terrific product performance, we are growing our business in Brazil."

Schickler said the company expects to grow both corn and soybean seed market share in Brazil again this planting season, building on share gains for both in 2005. Key to future growth in the high-value segment of this
large market is the Pioneer system for farmer access and capturing value for biotech products and continued research and infrastructure investments in seed production, testing and marketing.

The presentation and an audio webcast have been archived in the DuPont Investor Center at http://www.dupont.com.

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.

® Herculex is a registered trademark of Dow AgroSciences LLC.