Each year, natural baculovirus epidemics nearly wipe out populations of some caterpillar pests, such as corn earworm, cotton bollworm
, tobacco budworm, and cabbage's nemesis--the diamondback moth," says ARS microbiologist Arthur H.
In a field test on an Israeli kibbutz, the device picked up so many faraway tractors and planes that the technological din drowned out any bollworms
The effects of various larval and adult diets on fecundity and longevity of the bollworm
, tobacco budworm, and cotton leafworm.
Single-gene Bt cotton varieties contain Cry1Ac protein and provide absolute control of tobacco budworm and pink bollworm
(MacIntosh et al.
Tobacco budworm (Heliothis virescens) and bollworm
(Helicoverpa zea) are two of the most destructive pests in cotton and other crops, with costs of control, production, and lost yield of up to $300 million per year in the United States alone.
De Moraes tested the tobacco plant's response to two closely related insects: the tobacco budworm (Heliothis virescens), a common pest of the plant, and the corn earworm, also called the cotton bollworm
(Helicoverpa zea), which normally doesn't touch the stuff.
The natural refuge option does not apply to Bollgard II cotton grown in areas where pink bollworm
is a pest, including CA, AZ, NM, and the above listed Texas counties.
COT202 and/or COT203 were significantly more efficacious than COT102 against the bollworm
, tobacco budworm, and beet armyworms (Figs.
The Arizona lab's newest pima genetic lines are better able to fend off attack by pink bollworm
and silverleaf white-fly--two major pests of cotton in the American West.
One version of the toxin protects against a range of caterpillars, including the European corn borer, the cotton bollworm
and the beet armyworm.
Species treated in this volume include desert locust, mountain pine beetle, tsetse flies, cactus moth, false codling moth, Anopheles arabiensis, rice stem borers, cotton pests, New World screwworm, red palm weevil, fire ant, tarnished plant bug, Aedes albopictus, oriental fruit fly, Mediterranean fruit fly, boll weevil, cotton bollworm
, pink bollworm
, codling moth, painted apple moth, and Formosan subterranean termite.
Each protein provides control of cotton bollworm
and tobacco budworm, which gives Bollgard II cotton dual efficacy for both pests.
However, cotton treated with spinosad "had fewer damaging bollworm
and budworm larvae than plots treated with the other pesticides," Esquivel says.
and velvetleaf (Abutilon theophrasti Medikus) finding that garbanzo bean produced significantly higher numbers of tobacco budworm and bollworm
larvae and adults as compared to the other 2 plant species.
Small-scale farmers in China and South Africa are already benefiting from GM cotton, modified to resist the cotton bollworm