Lethal effects of Clofentezine and Flufenzine on developmental stages of Tetranychus urticae Koch
2000
Marcic, D. (Institut za istrazivanja u poljoprivredi "Srbija", Beograd - Zemun (Yugoslavia). Centar za pesticide i zastitu zivotne sredine)
The acute toxicity of clofentezine and flufenzine to eggs and juvenile stages of two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) was investigated in six trials. The eggs expressed significant higher susceptibility comparing to the juvenile stages in all trials. Despite some variation in response to clofentezine, similar susceptibility could be established in larvae and protonymphs, while deutonymphs proved to be the least susceptible to both acaricides. Flufenzine was considerably more toxic than clofentezine in all trials; the estimated LC-50 values of flufenzine varied between 12.12 and 1675.52 microgram/L, while the corresponding values of clofentenzine ranged between 0.06 and 11.08 microgram/L.
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