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Temperatures at which boll weevils freeze

Temperatures at which boll weevils freeze

Jour Econ Ent 30(6): 833-836

991 adult boll weevils were collected in Oct. and Nov. and frozen with C02 during Nov., Dec, Jan., Feb. and March. Temp. changes were recorded with a self-compensating potentiometer. The undercooling temp. ranged from 26.6[degree] to[long dash]9.4[degree] F. Those frozen in Nov. and Feb. were most resistant, those frozen in Dec. and March least resistant. Winters having low minimum winter temps. were followed by small field populations of hibernated weevils whether the population the previous year was large or small.

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Accession: 023767059

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DOI: 10.1093/jee/30.6.833

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