Determination of the effects of different pesticides and their mixtures on important pests of olive

Thesis Type: Postgraduate

Institution Of The Thesis: Bursa Uludağ University, FEN BİLİMLERİ ENSTİTÜSÜ, Turkey

Approval Date: 2019

Thesis Language: Turkish

Student: Gözde Kılınç



This study was carried out in the olive grove near Gemiç village of Orhangazi district of Bursa province in 2017-2018. In this thesis, we determined the differences in the pest populations, damage rates, olive yield, olive calibration (quality level in terms of size) and olive's economic contribution (average income per tree) with the application of insecticide and insecticide mixtures against the main pests, olive moth Prays oleae (Bernard) (Lepidoptera: Yponomeutidae) and olive psyllid Euphyllura phillyreae (Foester) (Hemiptera: Psyllidae), in the most appropriate phonological periods of both olive tree and pests during two years. Among dimethoate, dimethoate + bakır, pyriproxyfen, abamectin ve spirotetramat formulations, dimethoate was found to be significantly more effective in the control of olive psyllid. Copper addition into dimethoate significantly reduced the effect of the insecticide in the control of olive psyllid. For the control of both antro- and carpophagous generations of olive moth, it was determined the effects of six insecticides and insecticide mixtures (dimethoate + dimilin, dimethoate + dimilin + bakır, chlorantraniliprole + abamectin, chlorantraniliprole + lambda-cyhalothrin, acetamiprid + lambda-cyhalothrin ve emamectin benzoate). Emamectin benzoate was found to be statistically more effective in pest populations and olive yield compared with the control parcel. In addition, diflubenzuron + dimethoate + copper mixture was found to be less effective compared other insecticide parcels. As a result, it has been observed that different insecticide and insecticide mixtures applied for olive moth and olive psyllid have got statistical different effects in the population levels and damage rates of pests. Although the control and dimilin + dimethoate + copper parcels produced less olives than the other parcels, olive calibration was significantly larger. In the results obtained from the parcels applied insecticide, emamectin benzoate and chlorantraniliprole + abamectin active ingredient insecticide mixture was found to have the highest olive yield.