تلخیص
Most crops face pest situations where more than one insect pest become economic pest and require
mixture of insecticide application for management. Presently two pyrethroids and three new chemistry
insecticides in mixtures at their lethal concentrations were tested against second instar larvae of
Spodoptera litura, under laboratory conditions using leaf dip method. LC50 of deltamethrin,
bifenthrin, emamectin benzoate, chlorfluazuron and flubendamide were 619 and 100, 74.2 and 65.8,
0.08 and 0.06, 73.4 and 52.5, and 0.37 and 0.31 ul/ml, respectively after 48 and 72 hour exposure.
Pyrethroids were least effective due to their high LC50 values as compared to new chemistry
insecticides. Emamectin and flubendamide were more toxic with less LC50 values than chlorfluazuron
at observed time periods. Mixtures of deltamethrin with chlorfluazuron, emamectin-benzoate and
flubendamide were antagonistic. However, bifenthrin showed potentiation with emamectin and
flubendamide which revealed that some pyrethroids can result in potentiating mixtures with new
chemistry insecticides for S. litura control under multiple pest problem scenarios.
Sufian Saif Bhatti, Munir Ahmad, Kamran Yousaf, Muhammad Naeem. (2013) PYRETHROIDS AND NEW CHEMISTRY INSECTICIDES MIXTURES AGAINST SPODOPTERA LITURA (NOCTUIDAE: LEPIDOPTERA) UNDER LABORATORY CONDITIONS, Asian Journal of Agriculture and Biology, Volume 1, Issue 2.
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