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Field control of Heliothis zea (Boddie) (Lepidoptera: Noctuidae) using a parasitic nematode

Published online by Cambridge University Press:  19 September 2011

C. F. J. Bong
C. F. J. Bong
Affiliation:
Department of Plant Protection, University of Agriculture Malaysia, Sarawak Branch, Kuching, Malaysia
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Abstract

Field trials were conducted to assess the effectiveness of a parasitic nematode, the DD136 strain of Neoaplectana carpocapsae Weiser in controlling Heliothis zea (Boddie) on naturally infested sweetcorn.

Nematode suspensions at concentrations of 0, 4 × 103, 4 × 104, 4 × 103 (applied twice) and 4 × 104 (applied twice), nematodes/ml respectively, were sprayed on the ears at early silking stage.

Treatments with 4 × 104 nematodes/ml sprayed twice at 3 days interval gave significantly better control (55%) than the rest. The mean number of surviving H. zea larvae was also significantly reduced with increasing concentrations of nematodes. Economic damage was not prevented but damage to treated ears was significantly lower than that of the untreated plots.

Résumé

Des essais ont été faits pour évaluer l'efficacité d'on nématode parasitaire, du type DD 136 de Neoaplectana carpocapsae Weiser pour maitriser le Heliothis zea (Boddie) sur le mais infesté naturellement.

Les suspensions de nématodes à une concentration de 0; 4 × 103; 4 × 104; 4 × 103 (employé deux fois) et 4 × 104 (employé deux fois) nématodes par millilitre respectivement, ont été vaporisées sur les plants de mais au stade où les épis commencent à developer le panache pendant.

Le traitement, avec 4 × 104, nématodes par millilitre, vaporisé deux fois à trois jours d'intervalle a nettement mieux maitrisé le Heliothis zea (à 55%). En moyenne le nombre de larves d'Heliothis zea ayant survécu a été réduit de façon significative avec l'augmentation des concentrations de nématodes. Les dégats économiques n'ont pas été complitement empêchés, mais les dégats, sur les plants de mais traités on été nettement moindres que pour les plants non traités.

Keywords

ControlHeliothis zea (Boddie)corn earwormsweetcornDD136Neoaplectana carpocapsae Weisernematodeeconomic damageLe maitriséHeliothis zea (Boddie)les larves de maisDD136le maisNeoaplectana carpocapsae Weiserle nématodeles dégats économiques
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 1 , February 1986 , pp. 23 - 25
Copyright
Copyright © ICIPE 1986

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References

REFERENCES

Bedding, R. A. (1976) New methods increase the feasibility of using Neoaplectana spp. (Nematoda) for control of insect pests. Proc. Int. Coll. Invertebr. Path. 1, 250–254.Google Scholar
Bong, C. F. J. and Sikorowski, P. P. (1983) Use of the DD136 strain of Neoaplectana carpocapsae Weiser (Rhabditida: Steinernematidae) for the control of Corn Earworm (Lepidoptera: Noctuidae). J. econ. Ent. 76, 590–593.CrossRefGoogle Scholar
Brazzel, J. R., Newsom, L. D., Roussel, J. S., Lincoln, C., Williams, F. J. and Barnes, G. (1953) Bollworm and tobacco budworm as cotton pests in Louisiana and Arkansas. Louisiana Tech. Bull. No. 482.Google Scholar
Dutky, S. R. (1967) An appraisal of the DD136 nematode for the control of insect populations and some biochemical aspects of its host-parasite relationships. In Abstr. Joint U.S.-Japan Sem. Microbial Control Insects Pests. U.S.-Japan Committee on Sci. Cooperation, Panel 8, Fukuoka.Google Scholar
Dutky, S. R. (1974) Nematode parasites. In Proc. Summer Inst. on Biological Control of Plant Insects and Diseases (Ed. by Maxwell, F. G. and Harris, F. A.). University Press of Mississippi, Jackson, Miss.Google Scholar
Dutky, S. R. and Hough, W. S. (1955) Note on a parasitic nematode from codling moth larvae, Carpocapsa pomonella (Lepidoptera: Olethreutidae). Proc. Ent. Soc. Wash. 57, 244.Google Scholar
Dutky, S. R., Thompson, J. V. and Cantwell, G. E. (1964) A technique for the mass propagation of the DD136 nematode. J. Inverterbr. Path. 6, 417–422.Google Scholar
Poinar, G. O. Jr (1967) Description and taxonomie position of the DD136 nematode (Steinernematidae, Rhabditoidea) and its relationships to Neoaplectana carpocapsae Weiser. Proc. Helminth. Soc. Wash. 34, 199–209.Google Scholar
Poinar, G. O. Jr (1971) Use of nematodes for microbial control of insects. In Microbial Control of Insects and Mites (Ed. by Burges, H. D. and Hussey, N. W.). Academic Press, New York.Google Scholar
Poinar, G. O. Jr (1979) Nematodes for Biological Control of Insects. CRC Press, Boca Raton, Fla.Google Scholar
Schmiege, D. C. (1963) The feasibility of using a Neoaplectanid nematode for control of some forest insect pests. J. econ. Ent. 56, 427–431.CrossRefGoogle Scholar
Sparks, T. C. (1981) Development of insecticide resistance in Heliothis zea and Heliothis virescens in North America. Bull. ent. Soc. Am. 27, 186–192.Google Scholar
Tanada, Y. and Reiner, C. (1962) The use of pathogens in the control of the corn earworm, Heliothis zea (Boddie). J. Invertebr. Path. 4, 139–154.Google Scholar
Welch, H. E. (1962) Nematodes as agents for insect control. Proc. ent. Soc. Ontario 92, 11–19.Google Scholar
Wolfenbarger, D. A., Bodegas, P. R. and Flores, R. (1981) Development of resistance in Heliothis spp. in the Americas, Australia, Africa and Asia. Bull. ent. Soc. Am. 27, 181–185.Google Scholar