
	Pakistan Journal of Biological Sciences
	Year: 1999 \| Volume: 2 \| Issue: 2 \| Page No.: 320-326 DOI: 10.3923/pjbs.1999.320.326

Field Evaluation of Bacillus thuringiensis, Insect Growth Regulators, Chemical Pesticide Against Helicoverpa armigera (Huber) (Lepidoptera: Noctuidae) and Their Compatibility For Integrated Pest Management

Shahid Karim, Muhammad Murtaza and Sheikh Riazuddin

Abstract: A large number of Bacillus thuringiensis (Bt) isolates separated from samples collected from different economic environments in Pakistan were characterized for Crystal Protein gene (cry) composition and pesticidal activity against devastating polyphagous pest, Helicoverpa armigera. Isolates harboring combinations cry2A genes were found me efficacious against the target pest. One isolate designated as PR17.4 (CEMB Bt) exhibited high levels of toxicity again H. armigera in lab biotoxicity assays and was therefore, chosen as a potential candidate in integrated Pest Management (1PM) strategies to control this notorious pest of valuable crops. Field efficacy of home grown cells CEMB Bt, PR17.4, Agr (50 WP), was compared with a commercial BT formulation of Novartis, growth regulators, Match (50 EC), Insegar (25 W and a popular chemical pesticide, Curacron (500 EC) to investigate their effectiveness to control H. armigera in potato crop Insegar was not significantly effective against the target pest. Locally isolated CEMB Bt was found to be as effective the commercial Bt and chemical control agent of Novartis. A synergistic effect was also observed among, Match/Agree CEMB Bt/Match, Match/Curacron and Agree/Curacron combinations. These studies suggest that CEMB Bt alone or combination with other biological or chemical based pesticides can be safely recommended for pest management strategy against H. armigera with no obvious harmful effects on its predators as is the case with chemical insecticides.

PDF Fulltext XML References Citation Report Citation

RELATED ARTICLES:

•	Field Efficacy of CAMB Bacillus thuringiensis Biopesticide to Control Helicoverpa armigera (Hübner) and Earias vitella (Fabricius) in Okra Crop

•	Management of Helicoverpa armigera: A Review and Prospectus for Pakistan

•	Shelf Life and Field Evaluation of CAMB Bacillus thuringiensis Biopesticide Against Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on Tomato

•	Screening of Bacillus thuringiensis Isolates Recovered from Diverse Habitats in India for the Presence of cry1A-type Genes and Cloning of a cry1Ac33 Gene Toxic to Helicoverpa armigera (American Bollworm)

How to cite this article:

Shahid Karim, Muhammad Murtaza and Sheikh Riazuddin, 1999. Field Evaluation of Bacillus thuringiensis, Insect Growth Regulators, Chemical Pesticide Against Helicoverpa armigera (Huber) (Lepidoptera: Noctuidae) and Their Compatibility For Integrated Pest Management. Pakistan Journal of Biological Sciences, 2: 320-326.

DOI: 10.3923/pjbs.1999.320.326

URL: https://scialert.net/abstract/?doi=pjbs.1999.320.326

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		AGRIS
		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ISI Web of Knowledge
		PubMed
		SCIMAGO
		Thomson ISI

Science Alert