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Eotetranychus hirsti is one of the most important pests of rain-fed and irrigated fig trees in Iran. In this study, the efficiency of spiromesifen (Oberon® 24% SC) for controlling this pest was investigated. The experiment was performed in two provinces of Fars (Esthaban and Kharameh) and Kermanshah (Dalahu) based on randomized complete block design with three replications during the summer 2019-2020 in fig orchards. The treatments were consisted of spiromesifen (Oberon®24% SC) with two concentrations (0.4 and 0.5ml/l), spirodiclofen (Envidor ®, 0.5ml/l), propargite (Omite®, 1.5ml/l), Palizin (1.5ml/l) and control (water spraying). In order to determine the spraying time, 30 leaves were collected randomly from each treatment and after observation of an average of 5 active mites under leaves, spraying was done. After spraying, sampling was performed in three, seven, 14 and 21 days’ intervals by collecting 30 leaves from each experimental unit. In the laboratory, different developmental stages were count and recorded using a stereomicroscope. The results of Kermanshah’s experiment showed that there was a significant difference between Oberon 0.4 and 0.5 per thousand on 3 days after spraying and the efficiency of Oberon 0.5 on the 3, 7, 14 and 21 days after spraying was 84.01%, 84.93%, 80.97% and 76.91%, respectively. Also, there was no significant difference between Envidor and Oberon 0.5, while in all sampling times, the treatment of Omite showed a significant difference with Oberon 0.5. In Fars province (Estahban), there was significant difference between treatments of Oberon 0.4 and 0.5 on the 3 and 7 days after spraying. Also, in all sampling times, the treatments of Envidor, Omite and Palizin did not show a significant difference with Oberon 0.5. In the Kharameh region, there was a significant difference among treatments on 3 days after spraying at level 1% and the efficiency of Oberon 0.4 and 0.5 was 61.78% and 70.42%, respectively. The result showed that the efficiency of Oberon 0.5 was more on E. hirsti compared with Oberon 0.4.Keywords: Eotetranychus hirsti, spiromesifen, Fig, acaricide
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