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Vernal Infusion of Thrips into North Carolina Peanut Fields

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Thrips (Frankliniella spp.) emergence from soil was monitored in newly seeded peanuts in 1990 and 1991 and in newly seeded corn planted in rotation with peanuts in 1991, using emergence and exclusion cages. Sticky cards were used in 1990 and 1991 to monitor thrips activity outside of emergence/exclusion cages. Thrips collected in 1991 from emergence cages, from peanut and corn foliage inside and outside of emergence and exclusion cages, and from sticky cards were identified to species. Two and nine thrips individuals were found in emergence cages in peanut fields in 1990 and 1991, respectively. Four thrips were found in emergence cages in corn in 1991. In both years, thrips abundance and damage on peanut or corn plants inside emergence and exclusion cages was low compared with plants outside cages. All thrips collected from cages and plants were Frankliniella fusca (Hinds), which is a vector of tomato spotted wilt virus (TSWV). Based on sticky card counts, thrips were abundant in fields in which cages were placed. In 1991, nearly 20% of the 9,102 thrips collected from sticky cards were TSWV vectors (17.3% F. fusca, 0.2% F. occidentalis, and 0.9% Thrips tabaci). These data indicate that in-field emergence was not an important source of thrips attacking newly planted peanut and corn in these fields.

Document Type: Research Article

Publication date: April 1, 1994

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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