As reported on this website and in American Agriculturist early this spring, state agricultural departments and Cooperative Extension in seven Mid-Atlantic states sought a Section 18 exemption for dinotefuran insecticide, judged to be most effective on controlling brown marmorated stink bugs. U.S. Environmental Protection Agency approved that request on Monday.
It comes just as egg hatch begins to build populations. The emergency exemption allows dinotefuran, labeled for use to protect some 39 crops, to be used against BMSB. The two products containing dinotefuran are Venom, manufactured by Valent and and Scorpion 35SL, manufactured by Gowan. They can be used in Delaware, Maryland, New Jersey, North Carolina, Pennsylvania, Virginia and West Virginia.
Farmers and growers in those states suffered significant losses because of the stinkbug, according to Maryland Ag Secretary Buddy Hance. "Experts predict that this growing season will be even worse."
Adult stink bugs have been resistant to many insecticides. However, a working task force with USDA, university researchers, growers associations and state pesticide regulatory officials identified the most effective products.
Some 40 different pesticides are under study, with dinotefuran being identified as effective. Pests, however, can build up a resistance to pesticides very quickly, and the task force hopes to identify more effective products soon.
George Hamilton, Rutgers University Extension pest management specialist, says the list of products approved for fruit, vegetables and field crops as of January 19 is still effective. You can find the list in the "Exclusive" button at: www.farmprogress.com.
"Mid-June in my area is when we start to see eggs and first instars," notes Hamilton. "It'll be earlier in warmer locations." The site also has a picture of egg masses and first-instar bugs. The first-instar stage is when the pesticides will be most effective, he adds.
The EPA exemption is authorized for one growing season and expires on October 15, 2011.