American Vanguard Corporation (AMEX: AVD) today announced that its subsidiary, AMVAC Chemical Corporation, has partnered with Pioneer Hi-Bred International, Inc., a subsidiary of E. I. du Pont de Nemours and Company (DuPont), for a marketing program for AMVAC's SmartBox® closed-handling system.

Pioneer® brand seed customers now have the opportunity to qualify for a discount on the purchase of a SmartBox system.

The SmartBox closed-handling system uses an in-cab computerized controller for precise application of granular corn rootworm insecticides, as well as monitoring and record-keeping. Applicator exposure is virtually eliminated, since insecticides are pre-packaged in 50-lb. returnable containers that are keyed to open only when lock mounted into the SmartBox applicator. This eliminates the need to open, pour and dispose of bags and reduces the risk of skin contact and inhalation. This low-maintenance system, which now includes a GPS-compatible controller, can be fitted on all major planter brands.

Ted Ramirez, AMVAC's Director of marketing, noted, "We are pleased that Pioneer recognizes the value of our SmartBox technology and product offerings and introduced this discount program for Pioneer seed consumers. We see it as a further endorsement of our SmartBox technology."

Barry Brown, Pioneer Marketing Manager, added, "We want to offer growers a range of treatment options for pest problems. The SmartBox system provides a granular insecticide solution with good efficacy, precise application and applicator safety. The computerized controller also can document insecticide applications on refuge acres."

Pioneer Hi-Bred International, Inc., a subsidiary of DuPont, 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, crop protection solutions and quality crop systems to customers in nearly 70 countries. DuPont is a science 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, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.

Pioneer® is a registered trademark and service mark of Pioneer Hi-Bred International, Inc.

American Vanguard is a diversified specialty and agricultural products company that develops and markets products for crop protection and management, turf and ornamentals management and public and animal health. The Company's basic strategy is to acquire and license brand name, niche product lines from larger companies that divest mature products to focus on newly discovered molecules. During 2005, American Vanguard was recognized as one of BusinessWeek's Hot Growth Companies (#72), Fortune Small Business' America's 100 Fastest Growing Small Companies (#40) and in 2004 was recognized as a Forbes' 200 Best Small Companies (#34). American Vanguard is included on the Russell 2000® and Russell® 3000 Indexes.