Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2015
  • Volume: 77
  • Issue: 1

Impact validation of heat-tolerant Trichogramma chilonis strain against sugarcane early shoot borer in Tamil Nadu

  • Author:
  • K.R. Manikandan, S. Sithanantham, R. Kandasamy1, K.P. Sanjayan2, S. Judy1,
  • Total Page Count: 3
  • Page Number: 32 to 34

1SV Sugars, Palyaseevaram, Kancheepuram-631 606

2Guru Nanak College, Department. of Advanced Zoology & Bio Technology, Velachery Main Road, Chennai-600 042

Sun Agro Biotech Research Centre, 3/1798, Main Road, Madanandapuram, Porur, Chennai-600125

*Email: manibscagri@gmail.com

**Present address: Regional Research and Technology Transfer Station, Bhawanipatna District, Kalahandi, Odisha

Abstract

The Heat Tolerant (HT) strain of Trichogramma chilonis Ishii developed (NBAII) was assessed for field impact against the sugar cane early shoot borer (ESB)-Chilo infuscatellus Snellen. Three treatments were compared viz. Trichogramma HT strain release twice a week @ 5cc/ha/release/during nine continuous weeks (T1), compared with local farmers’ practice of two malathion sprays (T2) and no release (T3). ESB (‘deadhearts’) was significantly reduced in the block with the HT strain releases (T1) compared to the ‘no release’ (T3) block. The overall reduction was 66 and 19% in T1 and T2 respectively, over no release (T3). Further, the ESB infestation in T3 block was on par with the block under local practice of insecticide-spray (T2). The scope for adopting the use of HT strain as a cost effective alternative to insecticide use for ESB management in sugar factory areas is discussed.

Keywords

Early shoot borer, Sugarcane, Trichogramma chilonis, heat tolerant strain, augmentation, field impact, malathion