Determination of the pests in organic olive orchards, and their population fluctuations and damages on olive fruits

It was aimed in this study that investigatons of the pests and their population fluctiotions and their damage on the olive fruits. Studies were conducted in three organic olive groves in Kuşadası, Çine and Köşk counties in the years 2014-2015. Prays oleae (Bernard) (Lepidoptera: Yponomeutidae) and Bactrocera oleae (Rossi) (Diptera: Tephritidae) were determined as the key pests, and Euphyllura sp. (Hemiptera: Psyllidae) and Lasioptera berlesiana (Paoli) (Diptera: Cecidomyiidae) were accounted as secondary pests. Population fluctuations of P. oleae have shown three peak point in april, may-june and october both in 2014 and 2015. Populations of B. oleae have peaked four times both in two sampling years. Injury rates on fruits were 0.7-45.0 % by P. oleae and 6.7-70.2 % by B. oleae, in the years of 2014 and 2015, respectively. Fruit damages by L. berlesiana and Parlatoria olea were found to be extremely low. Key words: olive, olive pests, organic farming