Environmental Entomology (1984) 13, 292-299

William J. Roltsch and Mark A. Mayse (1984)
Population studies of Heliothis spp. (Lepidoptera: Noctuidae) on tomato and corn in southeast Arkansas
Environmental Entomology 13 (1), 292-299
Abstract: Commercial fresh-market tomato fields in southeast Arkansas were monitored for Heliothis spp. during 1981 and 1982. Caterpillar-caused fruit damage, most of which was due to Heliothis, was surveyed during regular plant examinations both years and during harvest in 1982. Oviposition by Heliothis zea in nearby corn plots was also measured during 1982. Although H. virescens was present in the tomato crop system, H. zea was the predominant species. In 1981, highest Heliothis egg counts on tomato were found on 5 and 29 May. In 1982, Heliothis egg densities on tomato were very low until 30 June. Although fruit damage was greater in insecticide-free sections of fields during 1982, overall damage was considered to be quite low (ca. 1-2%) in all plots. The proximity of silking-stage corn appeared to be an important factor in H. zea seasonal population patterns in the tomato system.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): William J. Roltsch

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa zea	Maize/corn (Zea mays)	U.S.A. (mid S)
	Helicoverpa zea	Tomato (Solanum lycopersicum)	U.S.A. (mid S)
	Heliothis virescens	Tomato (Solanum lycopersicum)	U.S.A. (mid S)