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Evaluation of New Trials in Controlling Two Olive Lepidopteran Insect-Pests of Olive Trees, in Egypt

Hassan. A. Mesbah , El-Sayed H.Tayeb and Zaki. M. Atia

Field experiments evaluation were carried out in a private orchard cultivated with olive trees of (Manzanillo cultivar) at Wady El-Natroon region, throughout two subsequent seasons of 2016 and 2017 to control both of the lepidopteran olive moths; Prays oleae and the jasmine moth, Margaronia unionlis. Five treatments was applied;  the release of the parasitoid-Trichogramma evanescens alone or followed with certain insecticides.

The results showed that the subsequent monthly use treatment of release the parasitoid-T. evanescens then Nimbecidine® 0.03% E.C against P. oleae gave the best efficient treatment recording higher infestation reductions of 83.41 and 82.12% in both seasons of 2016 and 2017, respectively, followed by the more or less efficiency bimonthly release of the T. evanescens then Nimbecidine® 0.03% E.C, Nimbecidine® 0.03% E.C, Deltachem Super® 2.6% E.C, and release of T. evanescens only, that gave 60.11 & 67.88%, 57.85 & 64.63%, 55.16 & 56.91% and 52.48 & 53.66%, respectively.

As for the M. unionlis the results indicated that the subsequent monthly use treatment of release the T. evanescens then Nimbecidine® 0.03% E.C gave the best efficient control recording higher infestation reductions of 86.89 & 80.39% in both seasons 2016-2017, respectively, followed by the performed treatment of Nimbecidine® 0.03% E.C, the bimonthly release of T. evanescens then Nimbecidine® 0.03% E.C, Deltachem Super® 2.6% E.C, and release of T. evanescens only, that gave infestation reductions amounted to 77.75 & 68.81%, 70.73 & 64.31%, 70.43 & 63.99 and  60.37 & 52.09%, respectively.

Therefore, the monthly hang of the cards of parasitoid-T. evanescens followed by Nimbecidine® 0.03%  E.C application at the following month could be recommended as effective of control both the insect-pests.

 

Key words: controlling; olive lepidopteran; insect-pests; olive trees, Egypt.