African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12488

Full Length Research Paper

Testing Paecilomyces lilacinus, diatomaceous earth and Azadirachta indica alone and in combination against cotton aphid (Aphis gossypii Glover) (Insecta: Homoptera: Aphididae)

  Waqas Wakil1*, M. Usman Ghazanfar2, Yong Jung Kwon3, Ehsan Ullah4, Shamas-ul-Islam1 and Kashif Ali1  
  1Department of Agricultural Entomology, University of Agriculture, Faisalabad, Pakistan. 2Department of Plant Pathology, College of Agriculture, University of Sargodha, Pakistan. 3School of Applied Biology and Chemistry, Kyungpook National University, Daegu, Korea. 4Department of Agronomy, University of Agriculture, Faisalabad, Pakistan.
Email: [email protected]

  •  Accepted: 17 November 2011
  •  Published: 12 January 2012

Abstract

 

The efficacy of Paecilomyces lilacinus (Thom.) Samson (2.3 × 109 conidia ml-1),Azadirachta indica (10 mlL-1) and the formulation of diatomaceous earth (PyriSec) (3 gL-1) was tested for the control of cotton aphid (Aphis gossypii Glover) (Insecta: Homoptera: Aphididae) both under laboratory and semi-natural conditions. All the tested treatments gave significant control of aphid; however, P. lilacinus in combination with Neem showed the best control of aphids in detached leaf bioassay and semi-natural conditions. The applications of P. lilacinus and DE showed weak knock down effect on the insect pest. Furthermore, an increasing trend in mortality of aphids was observed in all the treatments with an increase in the time intervals. The results of the study clearly indicated that the P. lilacinus may give effective control of the aphids in combination with other eco-friendly control practices.

 

Key words: Paecilomyces lilacinus, diatomaceous earth, Azadirachta indica, aphid, cotton, insecticidal efficacy.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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