SEASONAL FLUCTUATION OF ZEUZERA PYRINA POPULATION ON APPLE, POMEGRANATE, PEAR, GUAVA, PECAN AND OLIVE TREES IN ALEXANDRIA GOVERNORATE

Document Type : Original Article

Authors

1 Faculty of Agriculture (Saba Pasha), Alexandria University, Alexandria, Egypt

2 Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.

Abstract

The leopard moth, Zeuzera pyrina L. (Lepidotera Cossidae ) is a serious polyphagous pest attacking fruit, wood and ornamental trees in Egypt and in many other countries in the world. Seasonal fluctuation of the population was monitored on six host plants (apple, pomegranate, pear, guava, pecan and olive) in Alexandria governorate during two suc­cessive years (1988 and 1989). Moths started to emerge during late April or early May until July and continued to October and December ac­cording to the host. An assessment of occurence and abundance of an­nual broods was approximated. Appropriate insecticidal application was determined for each host. The seasonal calender of Z. pyrina stages was constructed in pear orchards.