Induction of Diapause in Field Populations of the Pink Bollworm 1 in the Western United States 23
- 1 August 1980
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 9 (4) , 376-380
- https://doi.org/10.1093/ee/9.4.376
Abstract
The pink bollworm, Pectinophora gossypiella (Saunders) overwinters as a diapausing larva in a hibernaculum in cotton seeds, bolls, ground trash, or in the soil. In tests conducted in Arizona and southern California during 1973–78, the 1st diapause larvae was found as early as Aug. 23, and as late as Sept. 10. When diapause larvae were found in late Aug. the incidence of diapause remained low ( 29°C during mid to late Sept., the incidence of diapause was low and increased when temperatures decreased and photoperiod shortened. Early irrigation termination, chemical termination treatments and varieties did not significantly affect the initiation-or the incidence of diapause.This publication has 4 references indexed in Scilit:
- Pink Bollworm Suppression Through Crop Termination12Journal of Economic Entomology, 1978
- Pink Bollworm:1 Diapause Induction in Relation to Temperature and Photophase2Annals of the Entomological Society of America, 1978
- Controlling Pink Bollworms: Effects of Chemical Termination of Cotton Fruiting on Populations of Diapausing Larvae123Journal of Economic Entomology, 1976
- Seasonal Occurrence of Resting Larvae of the Pink Bollworm in Central Texas1Journal of Economic Entomology, 1956