Journal of Biological Control

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The studies to evaluate the effect of insecticides recommended on sugarcane in Punjab, on parasitization and adult emergence of high temperature tolerant (PDBC, Bangalore) and Ludhiana (Punjab) strains of Trichogramma chilonis Ishii conducted during April-July 2004 at Entomological Research Farm and Biological Control Laboratory of Punjab Agricultural University, Ludhiana revealed that Ludhiana strain of T. chilonis was more tolerant to insecticides as compared to the high temperature tolerant strain. Among the insecticides, endosulfan (Thiodan 35EC) @ 395g a. i./ha was the safest followed by imidaeloprid (Conlidor 200 SL) @ 20g a, i./ha, triazophos (Hostathion 40EC) @ 600g a. i./ha, chlorpyriphos (Dursban 20EC) @ 175g a. i,/ha and malathion 50EC @ 1250g a. i./ha. The latter two at the applied doses were highly deleterious to the parasitoid.

Keywords

Insecticides, Parasitism, Strain, Sugarcane, Trichogramma chilonis.
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