Studies on the Comparative Efficacy of Three Species of Trichogramma for the Control of Cotton Bollworms

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Authors

  • National Agricultural Research Project (OUAT), Umerkote, Dist. Nowrangpur, Orissa, 764073 ,IN
  • National Agricultural Research Project (OUAT), Umerkote, Dist. Nowrangpur, Orissa, 764073 ,IN

DOI:

https://doi.org/10.18311/jbc/1994/15112

Keywords:

Cotton Bollworms, Trichogramma achaeae, T. brasiliensis, T. Chilonis, Comparative efficacy

Abstract

The comparative efficacy of Trichogramma aehaeae Nagaraja and Nagarkatti, Trichogramma brasiliensis Ashmead and Trichogramma chilonis Ishii (8 releases @ 1,50,000 parasitised eggs/ha) was studied. Of the three species, T.achaeae was the most effective with 18.7% boll infestation, 51.8 bolls/plant and 14.3 q/ha seed cotton yield, followed by T.chilonis with 23.5% boll infestation,48.4 bolls/plant and 12.8 q/ha yield and T.brasiliensis with 27.7% boll infestation,43.2 bolls/plant and 11.4 q/ha seed cotton yield, Control had 32.3 % boll infestation, 30.6 bolls/plant and 7.6 q/ha seed cotton yield which were significantly lower than in different treatments.

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Published

1994-01-02

How to Cite

Mishra, B. K., & Mandal, S. M. A. (1994). Studies on the Comparative Efficacy of Three Species of <I>Trichogramma</I> for the Control of Cotton Bollworms. Journal of Biological Control, 8(2), 73–76. https://doi.org/10.18311/jbc/1994/15112

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