Acute, sublethal, and combination effects of azadirachtin and Bacillus thuringiensis on the cotton bollworm
, Helicoverpa armigera.
First results on synchrony between seasonal pattern of pheromone trap captures of cotton bollworm
, Helicoverpa armigera and appearance of freshly emerged larvae on developing cobs of corn hybrids.
Temporal and intraplant variability of Cry1Ac expression in Btcotton and its influence on the survival of the cotton bollworm
Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera).
Both laboratory tests and field monitoring have verified that cotton bollworm
can develop resistance to Bt cotton.
2000) reported that among 17 Bt cultivars, NUCOTN33B and 451BR differed in larval survival in no-choice laboratory leaf feeding assays, with 451BR supporting significantly higher cotton bollworm
Enhanced levels of P450s have been reported in resistant insects such as cotton bollworm
, diamondback moth and are regarded as major resistance mechanism to pyrethroids (Martin et al.
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.
With the application of Bt cotton which has strong resistance against cotton bollworm
, Chinese growers gained bumper harvest of cotton for several years since 2004.
Although the primary aim of transgenic Bt cotton is to control the cotton bollworm
The Old World cotton bollworm
, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae), is one of the most important pests in the world, and is widely distributed, being present in Europe, Asia, Africa, and Oceania (Zalucki et al.
Close-ups of 12-day-old cotton bollworm
larvae on cotton bolls.
USDA scientists in College Station, Texas, are working to harness chemicals responsible for this flower's perfumed scent to attract the earworm--also known as the cotton bollworm
, tomato fruit worm, and sorghum head worm--to pesticides.
Nasdaq NM: BIOS) today announced that it has received an order from the United States Department of Agriculture ("USDA") for a supply of Gemstar(R), a naturally occurring biological insecticide for the early control of the cotton bollworm
and tobacco budworm.
Potentiation/antagonism of deltamethrin and cypermethrin with organophosphate insecticides in the cotton bollworm
, Helicoverpa armigera (Lepidoptera: Noctuidae).
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.