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Sampling of Bemisia tabaci (Genn.) (Sternorrhyncha: Aleyrodidae) in Sudanese Cotton Fields

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Abstract:

The distribution of the red-eye nymphs of the tobacco whitefly, Bemista tabaci (Gennadius), within the cotton plant was analyzed during the growing season 1980–1981. Whiteflies distinctly aggregate on and around a main stem leaf, whose location varies according to plant growth and cotton variety. Sampling costs were reduced considerably by counting red-eye nymphs on a distal leaf sector only. The mean crowding index was used to define numerical and sequential sampling plans with a given precision level.

Document Type: Research Article

Publication date: October 1, 1984

More about this publication?
  • 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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