The U.S. Environmental Protection Agency has granted Section 3 approval of DuPont Steward insecticide for control of major worm pests, plus tarnished plant bug in cotton.
In 2000 usage under Section 18 exemptions, DuPont Steward controlled beet armyworm and tobacco budworm, while helping to protect beneficials and the cotton crop.
Steward also suppressed Lygus bugs (l. hesperus) in the western United States. Registration applications have been submitted to the states for review and approval.
The active ingredient in DuPont Steward, indoxacarb, is a new class of insecticide chemistry with a novel mode of action. This unique mode of action means Steward is an effective resistance management tool. While Steward protects the cotton crop against targeted pests, it has demonstrated minimal impact on beneficial insects and non-target organisms. DuPont Steward will also help preserve the long-term effective use of other chemistries, including Bt cotton technology, as Steward is a viable over-spray option.
At labeled rates, Steward can provide from five to 14 days residual protection of treated cotton, depending on the insect, population pressure and crop/environmental conditions. DuPont Steward is not systemic and does not protect new growth.
“We are very pleased that the EPA has granted Section 3 registration of DuPont Steward insecticide. We know that cotton consultants and growers found this product to be effective on worm pests plus tarnished plant bug in 2000,” said Lynn Loughary, product manager for DuPont Steward.
Steward will be available for the 2001 cotton season.
As of Jan. 10, 2001, Steward had been approved for commercial sales in New Mexico, Oklahoma, Texas, Missouri, Arkansas, Mississippi, Alabama, Georgia, Tennessee, South Carolina, North Carolina and Virginia.
For specific application information on DuPont Steward insecticide, please consult your local DuPont Field Service representative, agricultural products retailer or cotton consultant.