Prediction of the pink bollworm infestation in cotton fields by means of sex pheromone traps and some weather conditions in Kafr El-Sheikh and Dakahlia Governorates

Document Type : Original Article

Authors

Plant Protection Institute, Giza, Dokki, Egypt

10.21608/jpces.2006.460107

Abstract

The present investigation was directed to study the occurrence and seasonal abundance of the pink bollworm Pectinophora gossypiella (Saunders) (PBW) in cotton fields during 2003 and 2004. The effect of prevailing climatic factors on the flight activity of male moths was also studied. Flight activity studies using pheromone traps during two successive cotton seasons indicated that P. gossypiella had three generations with three sharp peaks on cotton during the period starting early in May and extending till the last week of September. The combined effects of temperature and relative humidity accounted for 8.3% and 36.7% of the variation in male moth population at Kafr El-Sheikh Governorate during 2003 and 2004, respectively, and for 11.1% and 40.5% in Dakahlia Governorate. Larval population and boll infestation started in early July and increased progressively until the end of the season.

Keywords

Journal of Pest Control and Environmental Sciences
Volume 14, Issue 1
June 2006
Pages 11-26

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