Recent Research on the Boll Weevil in Northern Sonora, Mexico, and the Thurberia Weevil in Arizona1

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In 1962 research was begun in northern Sonora, Mexico, to determine the amount of damage caused by boll weevils, Anthonomus grandis Boheman, occurring in cotton fields as near as 27 miles to fields in Arizona. This research involved the establishment of ecological relationships among boll weevil populations in Sonora, in the old infested areas of the United States, and in southern Arizona, where a variety of the boll weevil, the thurberia weevil, A. grandis thurberiae Pierce, occurs on a wild cotton, Gossypium thurberi Todaro. Square damage in the Mexican cotton reached an areawide level of 10% in late August and severe yield losses occurred in several fields. In Arizona, incipient infestations of thurberia weevils developed in several cotton fields by September 5. It was determined that boll weevils in Sonora developed diapause and entered surface ground hash to survive the winter, The thurberia weevil is not known to hibernate in ground trash. In addition, evidence of considerable winter survival of the Sonora boll weevils in pupal cells within old bolls was observed in northern Sonora cotton fields, This is the only known manner in which the thurberia weevil survives over Winter Applications of methyl parathion to cotton fields in Sonora in late October and early November considerably reduced overwintering populations.

Document Type: Research Article

Publication date: April 1, 1964

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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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