Virulence of entomopathogenic fungi on different life stages of pink bollworm, pectinophora gossypiella | [International Journal of Biology and Biotechnology • 2025]

Author(s):

1. Mubashar Iqbal: Department of Entomology, Faculty of Agricultural Sciences, University of the Punjab,Lahore 54590,Pakistan

2. Shahbaz Ahmad: Department of Entomology, Faculty of Agricultural Sciences, University of the Punjab,Lahore 54590,Pakistan

3. Ibrar ul Haq: Department of Entomology, Faculty of Agricultural Sciences, University of the Punjab,Lahore 54590,Pakistan

4. Arshad Javaid: Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab,Lahore 54590,Pakistan

5. Muhammad Bilal Chattha: Department of Agronomy, Faculty of Agricultural Sciences, University of the Punjab,Lahore 54590,Pakistan

Abstract:

The pink bollworm (Pectinophora gossypiella) is one of the most invasive insects globally and a voracious pest of cotton. Chemical pesticides were primarily utilized to manage this insect pest and boost crop productivity, which led to a resistant population and negative environmental and human health repercussions. As a result, more alternative techniques such as biological control, are required. The current study was carried out to assess the effectiveness of several entomopathogenic fungi (EPF) viz. Beauveria bassiana, Metarhizium anisopliae, Verticillium lecanii, and Aspergillus flavus against 2nd instar P. gossypiela larvae due to pesticide resistance. Finding revealed that maximum mortality was recorded at highest concentration (1×109 spores/ml). B. bassiana showed the best result followed by M, anisopliae, V. lecanii and Aspergillus flavus with highest concentration 1 × 109 at 12 post treatment interval with maximum percent mortality (51.62 ± 6.25), (44.27 ± 5.20), (40.39 ± 4.66) and (35.94 ± 3.95) while minimum percent mortality was observed at 3 days of post treatment interval (13.38 ± 1.32), (10.07 ± 1.04), (7.84 ± 0.76) and (7.29 ± 0.86) respectively. EPFs demonstrated their improved capacity to protect cotton crops against P. gossypiella over the long term. A viable substitute for pesticides and a useful part of an IPM campaign against P. gossypiella is the integration of cultural management techniques with EPFs. EPFs demonstrated the ability to cause the highest mortality rate when it came to pink bollworm.

Page(s): 133-138

DOI: DOI not available

Published: Journal: International Journal of Biology and Biotechnology, Volume: 22, Issue: 1, Year: 2025

Keywords:

Mortality , Beauveria bassiana , virulence , Pectinophora gossypiella , Verticillium lecanii and Aspergillus flavus

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