EFFICACY OF THE DISINFECTANT 'DISFECT-S' AGAINST PATHOGENS OF THE SILKWORM, Bombyx mori

Abstract

In-vitro efficacy tests of Disfect-S (Poly alkyl monohydric phenol) on the viability of infective propagules of silkworm disease at varying concentrations of 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 2.0% & 3.0% were carried out. Efficacy of 'Disfect- S as surface sterilant of silkworm eggs was tested at concentrations of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% with treatment durations of 1 min, 2 min, 5 min, 10 min and 20 min. The viability and the infectivity of Nosema bombycis spores was inactivated at 0.4% with 5 min. of treatment duration and the infectivity of conidia of Beauveria bassiana was completely arrested at 0.8% with 5 min. duration whereas Nuclear polyhedra virus (BmNPV) were completely inactivated at 0.8% for 10 minutes treatment duration. Disfect-S was highly effective as surface sterilant of silkworm eggs at 0.4% with 2 min. duration treatment without any deleterious effect on hatching. The present study gives an higher scope for Disfect-S as potential commercial disinfectant in sericulture.

DOI

https://doi.org/10.29321/MAJ.10.A01134

Pages

93 - 98

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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