Abundance and Insecticide Susceptibility of Bollworm and Tobacco Budworm in Missouri During 1993

C.E. Sorenson, C.O. Knowles, S.F. Abd-Elgahafar, G.S. Smith, H.F. Mammen, H.G. Townsend


Bollworm moths were captured in pheromone traps in central (Boone County), south central (Wright County), southwestern (Barton County) and southeastern (New Madrid, Pemiscot, and Dunklin Counties) Missouri. Approximately 90,000 male moths were captured in 14 traps. A total of 76 vial bioassays (n=17 in Dunklin, 14 in Pemiscot, 12 in New Madrid, 7 in Boone, 16 in Wright, and 10 in Barton County), were conducted with cypermethrin concentrations of 0, 2.5µg, and 5µg. Survival at the 2.5 and 5µg concentrations was approximately 14% and 4% respectively. These results indicate a slight increase in survival at both test concentrations over that observed in similar work in 1992. A total of about 650 male tobacco budworm moths were captured in 10 traps located in Dunklin, New Madrid, and Wright Counties. At least two budworm flights were detected in southeastern Missouri.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 1179 - 1182
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998