BioControl (2009) 54, 723-732

Chandish R. Ballal, R. Srinivasan and S.K. Jalali (2009)
Evaluation of an endosulfan tolerant strain of Trichogramma chilonis on cotton
BioControl 54 (6), 723-732
Abstract: The performance of an endosulfan tolerant strain of Trichogramma chilonis Ishii was evaluated against Helicoverpa armigera (Hübner) eggs on cotton plants in a net house. Under pesticide pressure, the tolerant strain could provide significantly higher parasitism in comparison to the susceptible strain. The parasitoid adult emergence was also significantly higher in the treatment with the tolerant strain in comparison to the susceptible strain, when parasitoids were released within 3 days of endosulfan spraying. Release of the tolerant strain of T. chilonis in conjunction with endosulfan spray application resulted in significantly higher pest mortality in comparison to the endosulfan treatment or release of T. chilonis alone. It could be inferred from the results that T. chilonis should be released only 3 days after endosulfan spray application as during the first 3 days after the spraying, endosulfan provided the required protection and adversely affected the performance of the parasitoid.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Chandish R. Ballal, Sushil Kumar Jalali

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera	Cotton (Gossypium)	India
Trichogramma chilonis (parasitoid)	Helicoverpa armigera	Cotton (Gossypium)	India