African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5228

Full Length Research Paper

Toxicity of Paecilomyces lilacinus blended with non-conventional agents to control cotton thrips (Thrips tabaci Lind.) (Insecta: Thysanoptera: Thripidae)

Waqas Wakil1*, M. Usman Ghazanfar2, Yong Jung Kwon3, Shamas-ul-Islam1 and Kashif Ali1
The entomopathogenic fungus Paecilomyces lilacinus (2.3 × 109 conidia ml-1) was blended with other non-conventional agents like Azadirachta indica (10 ml L-1) and diatomaceous earth formulation PyriSec (3 g L-1) for the control of cotton thrips (Thrips tabaci Lind.) (Insecta: Thysanoptera: Thripidae) using leaf detached bioassay and under semi-natural conditions. The bioassays were set at 25+1°C and >70% relative humidity at 16L/8D photoperiod and the data for mortality was taken after 2, 4, 6, 8 and 10-d. All the treatments showed significant control of thrips population on cotton. Over all, the application of P. lilacinus blended with A. indica exhibited higher mortality compared with its combination with PyriSec against T. tabaci. The results of the present study showed that P. lilacinus may provide effective control of the insect pest when blended with other non-conventional safer control agents.   Key words: Paecilomyces lilacinus, neem, diatomaceous earth, Thrips tabaci, cotton.
Email: [email protected]

  •  Accepted: 11 November 2011
  •  Published: 23 January 2012

Abstract

The entomopathogenic fungus Paecilomyces lilacinus (2.3 × 109 conidia ml-1) was blended with other non-conventional agents like Azadirachta indica (10 ml L-1) and diatomaceous earth formulation PyriSec (3 g L-1) for the control of cotton thrips (Thrips tabaci Lind.) (Insecta: Thysanoptera: Thripidae) using leaf detached bioassay and under semi-natural conditions. The bioassays were set at 25+1°C and >70% relative humidity at 16L/8D photoperiod and the data for mortality was taken after 2, 4, 6, 8 and 10-d. All the treatments showed significant control of thrips population on cotton. Over all, the application of P. lilacinus blended with A. indica exhibited higher mortality compared with its combination with PyriSec against T. tabaci. The results of the present study showed that P. lilacinus may provide effective control of the insect pest when blended with other non-conventional safer control agents.

 

Key words: Paecilomyces lilacinus, neem, diatomaceous earth, Thrips tabaci, cotton.

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