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Effect of thuricide on rice stem borers

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Proceedings of the Indian Academy of Sciences - Section B, Animal Sciences

Abstract

The effect of thuricide, a commercial preparation ofBacillus thuringiensis Berliner var.Kurstaki was studied on different stages of rice stem borersScirpophaga incertulas, Sesamia inferens andChilo auricilius. It was found to be ineffective on the eggs,pupae and adults of these borers. All the agegroups of the larval stages got infected. Thuricide was almost equally effectiveat 1·0, 0·75, O·50and 0·25%concentrations. 1% concentration, sprayed at the time of hatching of the larvae, reduced the incidence of dead hearts by 76·36%, white heads by 67·45% and the number of living larvae inside the tillers by 76·87%. It persisted for 15 days or more under green house conditions.

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Author notes

  1. P S Rao

    Present address: L. P. P. M., PO. Box 173, Ujung Padang, Indonesia

Authors and Affiliations

  1. Central Rice Research Institute, 753 006, Cuttack

    P Nayak & P S Rao

  2. Assam Agricultural University, Jorhat, Assam

    S Y Padmanabhan (Adviser)

Authors
  1. P Nayak
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  2. P S Rao
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  3. S Y Padmanabhan
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Additional information

Partly financed by a PL 480 Grant No. FG-In-468 from USDA

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Nayak, P., Rao, P.S. & Padmanabhan, S.Y. Effect of thuricide on rice stem borers. Proc. Indian Acad. Sci (Animal Sciences) 87, 59–62 (1978). https://doi.org/10.1007/BF03179002

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  • DOI: https://doi.org/10.1007/BF03179002

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