Mass production and field evaluation of Beauveria brongniartii (Saccardo) against Brahmina coriacea (Hope) whitegrubs in potato

Authors

  • saurbh soni CSK Himachal Pradesh Krishi Vishvavidyalya Palampur
  • Pawan Kumar Mehta CSK Himachal Pradesh Krishi Vishvavidyalya Palampur
  • Ravinder Singh Chandel CSK Himachal Pradesh Krishi Vishvavidyalya Palampur
  • Monika Kalia CSK Himachal Pradesh Krishi Vishvavidyalya Palampur

Keywords:

Beauveria brongniartii, Brahmina coriacea, mass production, potato

Abstract

An attempt was made to control the whitegrub, Brahmina coriacea using local isolates viz. KH I and KH II of entomopathogenic fungi, Beauveria brongniartii at field level in high hills of Himachal Pradesh. For mass multiplication of B. brongniartii, four grain media viz. cowpea, maize, sorghum and oat were tested and evaluated to select the suitable substrate for growth and mass multiplication. Cowpea was found to be best substrate showing maximum vertical growth of fungus (6.60-6.97 cm) in test tubes. Spore count was maximum (2.30×107 conidia/ml) in KH I isolate on cowpea. The fungus was multiplied in polypropylene bags on crushed, overnight presoaked cowpea grains. Within 21 days, the grains were covered by good growth of fungus and were used for field application. Under field conditions, double application of B. brongniartii (KH I) @ 1014 spores/ha was found effective. There was 44.85 per cent reduction in tuber damage on weight basis as compared with the control at the time of harvesting, whereas 33.99 per cent reduction in the grub population was observed in the treated plot as compared to untreated check. 

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Author Biographies

saurbh soni, CSK Himachal Pradesh Krishi Vishvavidyalya Palampur

Ph. D. Scholar (Entomology)

Pawan Kumar Mehta, CSK Himachal Pradesh Krishi Vishvavidyalya Palampur

Professor (Entomology)

Ravinder Singh Chandel, CSK Himachal Pradesh Krishi Vishvavidyalya Palampur

Professor (Entomology)

Monika Kalia, CSK Himachal Pradesh Krishi Vishvavidyalya Palampur

Ph. D. Scholar

Published

2017-09-07

How to Cite

soni, saurbh, Mehta, P. K., Chandel, R. S., & Kalia, M. (2017). Mass production and field evaluation of Beauveria brongniartii (Saccardo) against Brahmina coriacea (Hope) whitegrubs in potato. Potato Journal, 44(1). Retrieved from https://epubs.icar.org.in/index.php/PotatoJ/article/view/68827

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Articles