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The efficiency of prepared nano-abamectin was assayed against two-spotted spider mite, Tetranychus urticae (Koch). Prepared formulation showed spherical particles ranged from 66 to 133 nm under examination of Transmission Electron Microscope (TEM) and same pattern of Fourier Transform Infrared (FTIR) spectrum in comparison of conventional acaricide (Vertimec  ). In laboratory trail, toxicity index at LC50 level confirmed that nano-abamectin was greater toxic to adult female, T. urticae (Koch) with value; 30 than Vertimec  1.8% EC. Similarly, nano-abamectin reduced the mite fecundity at levels greater than those of Vertimec  . Regarding field trail, nano-abamectin at rate of 60 ml/ha showed very toxic effects after 3 day of spraying followed by 7 and 14 days on soybean plants achieving % of mortality; 89.98, 83.80 and 76.90%, respectively. These findings showed that, bioactivity of nano-acaricide were many folds higher than conventional acaricide against mite, T. urticae (Koch). However, the biosafety issues may be also addressed.

Acaricidal Activity of Nano-Abamectin Against the Two-Spotted Spider Mite; Tetranychus Urticae Koch (Acari: Tetranychidae)