Distribution of Ostrinia nubilalis Hbn. egg clusters on maize plants in south-eastern Poland in 2004-2008

Abstract

The selected bionomic aspects of the European corn borer (Ostrinia nubilalis Hbn.) on maize (Zea mays L.) were studied between 2004-2008 in Krzeczowice (49°59' N; 22°27' E); the south-eastern region of Poland. These aspects include the reproductive behaviour as related to the location of egg clusters oviposited by females on various parts of maize plants. Information about the egg cluster distribution on maize plants may help farmers and extension staff establish the optimal period for undertaking chemical or biological control intervention. The highest number of egg clusters were recorded in the central parts of plants, on fifth to seventh leaves, and on the third and fourth internodes. The majority of eggs were oviposited on the bottom side of leaves in the middle part by the midrib