Tobacco Budworm - Heliothis virescens (Fabricius)
Dr. Phillip Roberts, Extension Entomologist, The University of Georgia, Department of Entomology, Tifton, GA 31793
Dr. Paul Guillebeau, Extension Entomologist, The University of Georgia, Department of Entomology, Athens, GA 30602
Order Lepidoptera: Family Noctuidae
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Description:
Adult: light olive to brownish olive, with a wingspan of about 1.3 inches. Each forewing has three slanted, dark bands. Hind wings are white with dark margins.
Larvae: yellowish white to greenish, reddish brown, or black, with brown heads and pale stripes running lengthwise on the body. Up to 1.7 inches long.
Host: Tobacco, cotton, soybeans, wild hosts including deergrass and toadflax. Does not infest corn.
Damage: Feed on foliage, vegetative buds, flower buds, and fruiting bodies. Foliar damage is often insignificant.
Life Cycle: Overwinter as pupae in the top 2-4 inches of soil. Adults emerge from late April to mid-May. Eggs laid singly on leaves or buds; each female may lay up to 1000 eggs. Eggs hatch in 2-4 days and feed near the egg site. Then they move into the bud region of the plant and feed for about 3 weeks. Budworms pupate in the soil for about 2 weeks. Life cycle about 4-5 weeks. Several generations per year.
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 Tobacco Budworm moth Photo by: Phillip Roberts, UGA
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 Tobacco Budworm damage on terminal Photo by: David Adams, UGA
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 Large Tobacco Budworm on Tobacco Photo by: David Jones, UGA
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 Tobacco Budworm moth on cotton Photo by: David Jones, UGA
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Control: A number of diseases, parasites, and predators attack budworms, but pesticides may be necessary. Destroy plant debris quickly after harvest. Fall and spring plowing can destroy many pupae. If pesticides are necessary, try to preserve beneficial populations. Carbamates, organophosphates, pyrethroids, and Bacillus thuringiensis are often recommended.
In: Roberts, P. M. and G. K. Douce, Coordinators. 1999. Foliage Feeding Insects. A County Agent's Guide to Insects Important to Agriculture in Georgia. Univ. of GA, Col. Ag. Env. Sci., Coop. Ext. Serv., Tifton, GA USA. Winter School Top Fifty Agricultural Insect Pests and Their Damage Sessions, Rock Eagle 4-H Ctr., Jan. 20, 1999.
Selected References and Suggested Readings
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