Research Article | Published: 01 June 2000

Knockdown Toxicity of Insecticides and B.T. Formulations on Larvae of Teak Defoliator, Hyblaea puera

T. Senguttuvan, C. Chinniah, R. V. Varma and K. S. S. Nair

Indian Journal of Forestry | Volume: 23 | Issue: 2 | Page No. 160-163 | 2000
DOI: https://doi.org/10.54207/bsmps1000-2000-099HAH | Cite this article

Abstract

Laboratory experiments were conducted for assessing the knockdown toxicity of various insecticides and B.t. formulations against third and fourth instar larvae of Hyblaea puera. The results indicated that the mortality of third instar larvae was 85-100 per cent in all insecticides and B. t. formulations within 2 hours of feeding. A new insecticide, Nurelle D 505 at 0.082% and 0.11%. Monocrotophos 0.05%, Quinalphos 0.05% and the B. t. formulations Delfin @ 159 IU/ml were found to cause cent per cent knockdown toxicity within 8 hours after inoculation against fourth instar larvae of H. puera. However, all the 24 HAI. The B. t. formulations were effective even at lower concentrations against third instar and at higher concentrations against fourth instar.

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How to cite

Senguttuvan, T., Chinniah, C., Varma, R.V. and Nair, K.S.S., 2000. Knockdown Toxicity of Insecticides and B.T. Formulations on Larvae of Teak Defoliator, Hyblaea puera. Indian Journal of Forestry, 23(2), pp.160-163. https://doi.org/10.54207/bsmps1000-2000-099HAH

Publication History

Manuscript Published on 01 June 2000

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