Samsun İli Findik Bahçelerinde Bulunan Zararli ve Yararli Akarlarin Populasyon Dalgalanmalarinin Belirlenmesi

Abstract

This study was conducted to the determinate of harmful and beneficial mite species in hazelnut orchards during 2001-2002 at Karaguney village in the 19 Mayis district, Samsun, Turkey. Seasonal fluctuations of harmful and beneficial mite species were determined in two hazelnut orchards where pesticides were not applied during the study. Leaf samples were collected weekly for monitoring populations of these harmful and beneficial mite species during the vegetative period. Sampling was made by collecting 100 leaves from each ocak and totaly 10 ocak from both orchards. Results revealed that the populations of harmful and beneficial mite species generally started to increase from april and reached their highest level in July-August. Population levels started to decline in October. Population densities of harmful mites did not reach high levels in both hazelnut orchards. Predatory mites could have suppressed the harmful mites.