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Cabbage lepidopterous pests and their parasites in southwestern Virginia



Cabbage lepidopterous pests and their parasites in southwestern Virginia



Journal of Economic Entomology 79.3: 629-632



Lepidopterous pests of cabbage and their parasites in southwestern Virginia were investigated in 1981 and 1982 in a pesticide-free plot. The imported cabbageworm, Artogeia rapae (L.) (formerly in Pteris), peaked in mid-July and was the major pest. The cabbage looper, Trichoplusia ni (Hubner), which peaked in August and July in 1981 and 1982, respectively, was the second most important pest. Small numbers of diamondback moth, Plutella xylostella (L.) were present. A. rapae and T. ni had two to three generations per year. Of 14 parasite species recovered, 3 were common. Parasitization of A. rapae larvae by Cotesia glomeratus (L.) (formerly in Apanteles) averaged ca. 25% each year. Pteromalus puparum (L.) parasitized 70 and 32% of the A. rapae pupae during 1981 and 1982, respectively. Parasitization of T. ni larvae by Voria ruralis (Fallen) averaged 27% in 1981 and 17% in 1982.

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Accession: 001311369

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DOI: 10.1093/jee/79.3.629


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