Efficacy of Fumigants for Control of Sal Seed and Seedling Borer <i>Pammene theristis</i> Meyrick (Lepidoptera: Tortricidae)

Manisha Sharma; K. P. Singh; Kamal Pandey

doi:10.36808/if/2022/v148i2/155012

Efficacy of Fumigants for Control of Sal Seed and Seedling Borer Pammene theristis Meyrick (Lepidoptera: Tortricidae)

Authors

Manisha Sharma Forest Research Institute, Dehradun 248006 Uttarakhand
K. P. Singh Forest Research Institute, Dehradun 248006 Uttarakhand
Kamal Pandey Forest Survey of India, Dehradun 248095 Uttarakhand

DOI:

https://doi.org/10.36808/if/2022/v148i2/155012

Keywords:

Sal Seeds, Seed Borer, Pammene theristis, Fumigation, Fumigants.

Abstract

Sal (Shorea robusta Gaertn.) is one of the most important timber species of Indian sub-continent. Along with timber, Sal seeds are of great commercial importance. The quality of seed production and seed viability are affected by insect infestation on tree stands and during storage which causes considerable economic loss. Pammene theristis Meyrick is the most destructive pest, which bores both the seeds and seedlings of Sal. Fumigation is an effective management method of suffocating or poisoning the seed borers within the seed and thus controlling the infestation. A laboratory study was carried out in Insectary, Forest Research Institute, Dehradun. The results revealed that the most effective fumigant against the seed borer P. theristis was found to be EDB + CCl₄ at 0.2 ml/kg dose for 48 hours. It was followed by EDB (at 0.2 ml/kg), PDCB (at 0.2 ml/kg) and CS₂ (at 0.2 ml/kg) at 48 hours duration each.

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