bollworm

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Related to cotton bollworms: pink bollworm

bollworm,

name for the larvae of two different moths. The pink bollwormpink bollworm,
destructive larva of a moth, Pectinophora gossypiella. Probably of Native American origin, it is a serious pest of cotton in the S United States, chiefly along the Mexican border.
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 is a serious pest of cotton, and the corn earwormcorn earworm
or cotton bollworm,
destructive larva of a moth, Heliothis zea. Also known as tomato fruitworm, the larva attacks a variety of crops, boring into and feeding on the developing fruits—tomatoes, corn kernels, or cotton bolls.
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, or cotton bollworm, attacks cotton, corn, and other crops.
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References in periodicals archive ?
The attack of cotton bollworms were found throughout the cotton season.
Others, however are thinking the mild winter could mean an increase in tobacco budworms and cotton bollworms, meaning they're willing to switch to transgenic varieties this year.
The comparative analysis of field evaluations indicated that monocrotophos and endosulfan treated cotton provided good control of the cotton bollworms. Data illustrated this trend as average square and boll damage of 2.88% and 3.16%, respectively, occurred in monocrotophos and endosulfan treated cotton fields, which were significantly lower than those on unsprayed cotton (6.22% damage) (Table I).
"Cotton bollworms and budworms have developed resistance to many standard commercial insecticides," says Kirk, who is with the Areawide Pest Management Research Unit in College Station.
Artificial diet for rearing of cotton bollworms was prepared in the laboratory following the method and ingredients used by Ahmed and McCaffery (1991).
The test distinguishes cotton bollworms from their cousins, the tobacco budworm and groundcherry fruitworm.
(as it also attacks terminal shoots of cotton plants) all cotton bollworms appeared at flowering stage.
To stimulate the production of sex pheromones, Teal applied the analog to the skin of tobacco budworms and cotton bollworms. Both of these major cotton pests have adapted to commonly used chemical insecticides, making them less effective, notes Teal.
The study was conducted to determine the comparative infestation of cotton bollworms viz., spotted bollworm (Earias vittella) against two transgenic Bt (FH-113, FH-114) (characteristics given below) and one conventional cultivar (FH-2015), which were chosen from a pool of varieties grown in the experimental area of Directorate of Cotton, Ayub Agricultural Research Institute, Faisalabad, Pakistan.