Initial entry into diapause by segments of populations of the boll weevil (Anthonomus grandis Boheman) were studied in one field in 1958 and in seven fields in 1959. In the 1958 field diapause occurred by August 26. In the 1959 fields it was observed as early as August 11 and as late as September 8. Weevil populations generally entered diapause in two distinct periods. Gross observations indicated that entry into diapause in the first period was related to the maturity of the plants in the different fields, An adequate food supply appeared to be necessary. Diapausing weevils were first recovered from ground trash on September 10 in 1958 and September 9 in 1959, which indicated movement by diapausing segments of the weevil populations to overwintering quarters well in advance of the first killing frost.
Document Type: Research Article
Publication date: December 1, 1961
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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.