Reported Resistance Case(s)

Species: helicoverpa zea

Order	Family	Common Name(s)	Group	Host
lepidoptera	noctuidae	corn earworm	AG

Active Ingredient: DDT

MOA: Sodium channel modulators, Pyrethroids, Pyrethrins, DDT
Group: OCL	CAS #: 50293	Shaugnessy Code: 29201

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G2053	1972	Field Evolved Resistance	USA-- Mississippi	Harris, F. A. (1972). Resistance to methyl parathion and toxaphene-DDT in bollworm and tobacco budworm from cotton in Mississippi.. J. Econ. Entomol., 65 1193-94.
G1908	1971	Field Evolved Resistance	Mexico	Plapp, F. W., Jr. (1971). Insecticide resistance in Heliothis: Tolerance in larvae of H.. virescens as compared with H. zea to organophosphate insecticides. J. Econ. Entomol., 64 999-1002.
G1276	1967	Field Evolved Resistance	USA-- New Mexico	(1967). Report of the First Session of the FAO Working Party of Experts on Resistance of Pests to Pesticides.. FAO, Rome 1965.
G960	1965	Field Evolved Resistance	Colombia	Rodrigo Adarve, R. (1965). In: FAO 1967.
G961	1965	Field Evolved Resistance	USA-- Georgia-- Ashburn	Snow, J. W. and Brazzel, J. R. (1965). Investigations of the possibility of host specific strains of the boolworm and tobacco budworm in Mississippi.. J. Econ. Entomol., 58 525-26.
G962	1965	Field Evolved Resistance	USA-- Oklahoma	Lingren, P. D. and Bryan, D. E. (1965). Dosage-mortality data on the bollworm, Heliothis zea, and the tobacco budworm, heliothis virescens in Oklahoma.. J. Econ. Entomol., 58 14-18.
G517	1964	Field Evolved Resistance	USA-- Mississippi	Pate, T. L. and Brazzel, J. R. (1964). Resistance status of bollworm and tobacco budworms in Mississippi in 1963.. Mississippi Agric. Exp. Sta. Inf. Sheet 848, 2 pp..
G518	1964	Field Evolved Resistance	USA-- Texas	Brazzel, J. R. (1964). DDT resistance in Heliothis zea.. J. Econ. Entomol., 57 455-57.
G424	1963	Field Evolved Resistance	USA-- Louisiana	Graves, J. B., Roussel, J. S. and Phillips, J. R. (1963). Resistance to some chlorinated hydrocarbon insecticides in the bollworm, Heliothis zea.. J. Econ. Entomol., 56 442-44.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.