International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:10, October, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(10): 4853-4859

Assessment of Brushing Date and Direction on Tasar Silkworm Antheraea mylitta D Production and Protection
J. Singh1*, A. Kumar1, S. Mukherjee1, G.P. Singh1, S. Ray1, K.S. Rawat2 and A.K. Sinha1
1Central Tasar Research and Training Institute, Ranchi, Jharkhand – 835303, India
2Centre for Remote Sensing and Geo-Informatics, Sathyabhama University,Chennai- 600119 (T.N), India
*Corresponding author

Impact of brushing date and direction on pest severity and cocoon production in tasar silkworm was studied. Appropriate direction as well as date of brushing has important role in suppression of pest and predators without use of harmful chemicals. Brushing of tasar silkworm was done on three dates viz., 16th, 21st, and 26th at an interval of 5 days in four directions viz., North, South, East and West. Regular monitoring of weather data’s (maximum temperature, minimum temperature, morning relative humidity, evening relative humidity, rainfall and it converted into weekly), cocoon quality (numbers of cocoon, cocoon weight, shell weight and SR%) and pest infestation (reduvid bug, canthecona bug and wasp) were recorded. The cocoon quality of cocoon showed decreasing trend in late brushing of tasar silkworm viz., first date of brushing> second date of brushing > third date of brushing whereas pest infestations showed increasing trends in late brushing viz., first < second north > south > west direction whereas pest infestation showed increasing trend viz., east < north < south and < west direction respectively. Overall highest cocoon quality and lowest pest infestation was observed in first date of brushing in east direction whereas lowest cocoon quality and highest pest infestation was observed in third date of brushing in west direction except wasp infestation. Finally, it could be concluded that the first date of brushing in east direction might be efficient in terms of suppressing the major pest predator to some extent and enhance cocoon production in humid subtropical climate of Dumaka, Jharkhand. This simple practice would reduce the cost of silkworm protection, protect the environment and can be incorporated as a component of integrated pest management (IPM) in tasar culture.

Keywords: Brushing date, Direction, Congenial weather, Pest outbreak, Standard meteorological week (SMW) etc.

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How to cite this article:

Singh, J., A. Kumar, S. Mukherjee, G.P. Singh, S. Ray, K.S. Rawat and Sinha, A.K. 2017. Assessment of Brushing Date and Direction on Tasar Silkworm Antheraea mylitta D Production and Protection.Int.J.Curr.Microbiol.App.Sci. 6(10): 4853-4859. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.