Acaricidal action of two detergents against Panonychus ulmi (Koch) and Panorlychus citri (Mcgregor) (Acarina : Tetranychidae) in the laboratory
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Two laboratory experiments using a leaf-dip technique evaluated the effect of two detergents, Quix and Nobla, on Panonychus ulmi and P. citri. Fenazaquin 0.01% a.i. was used on P. ulmi as a standard. Mortality increased with higher concentrations in both mite species. In addition, detergent treatments also dislodged P. citri mites from leaves. Dislodged + dead mites varied between 31.7% (Quix 0.25%) and 91.3% (Nobla 0.45%), in comparison with 22% in the control. These results suggest the need to evaluate the use of detergents against both mite species in field orchards.