The effect of natural and simulated patterns of rainfall on the winter survival of the pink boll worm, Pectinophora gosspyiclla (Saunders), was studied for 2 years in outside cages at Waco, Texas. The effect of temperature and level of soil moisture on survival of diapauses larvae was studied in bioclimatic cabinets, programmed to simulate the December 1960-March 1961 conditions of temperature and soil moisture level at Waco and Heavener, Oklahoma, areas of generally high and low winter survival of the insect, respectively. In the outside cages, survival from the buried bolls decreased when moisture level was increased during December-January or February-March; high levels of moisture during both periods, i.e., from December through March, decreased survival still further. High levels of moisture during April-May had little or no influence on survival regardless of the date when the boll was buried. In the bioclimatic cabinets, moderate temperature and a moderate level of soil moisture (1670) reduced survival compared with that obtained at a low level of soil moisture (8%). At low temperatures there was no significant difference in survival at the 2 lel'e1s of soil moisture.
Document Type: Research Article
Publication date: April 1, 1966
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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.