Helicoverpa zea Boddie (Lepidoptera: Noctuidae), commonly referred to as the bollworm, corn earworm
, and tomato fruitworm, has been recorded as a pest on soybean, Glycine max (L.) Merrill (Fabales: Fabaceae), since the early 1900s (Hardwick 1965) and can cause widespread damage to this crop, especially late in the growing season.
(2015a) to control corn earworm
in the state of Sinaloa and by Aguirre et al.
The work is part of an ARS program to optimize aerial spraying technology to control corn earworms
. The results will guide future corn earworm
spraying operations, and the methods may be used in future studies of spray rates for other crops and pests.--By Dennis O'Brien, ARS.
Ear damage in sweet corn in relation to adult corn earworm
(Lepidoptera: Noctuidae) populations.
Life table and consumption capacity of corn earworm
, Helicoverpa armigera, fed asparagus, Asparagus officinalis.
GP-299, PI 632749) wit resistance to corn earworm
(CEW) (Helicoverpa zea Boddie foliar damage were developed and released by Virginia Stat University, Agricultural Research Station, Petersburg, VA.
Herculex I controls European corn borer, but also protects corn from other important pests such as southwestern corn borer, black cutworm, fall armyworm and corn earworm
By crossing the maysin-rich corn with elite commercial lines, plant breeders can eventually provide farmers with hybrids that will fare better against lepidopteran pests like the corn earworm
. Its caterpillar stage causes $100 million annually in yield losses and control costs.
The best characterized of these newly discovered polydnaviruses is one associated with Campoletis sonorensis, a less than half-inch long wasp that attacks two larvae -- the tobacco budworm and another that's variously known as the cotton bollworm, tomato fruitworm or corn earworm
. Once in a larva, this virus appears to move into the insect's "fat body" -- a structure with a function somewhat analogous to that of the human liver.
Corn grown in Mexico is often affected by the corn earworm
, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), which damages ear, reduces yield, and increases cob rot (Ortega 1987) by providing an inoculation court for establishment of fungal diseases (Ortega 1987; Wu 2006; Aguirre et al.
feeding damage at harvest did not differ significantly between CEW and noninfested treatments.
"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.