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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(11): 1351-1361
DOI: https://doi.org/10.20546/ijcmas.2017.611.161


Epidemiological Studies on Sheath Blight Disease of Rice in Chhattisgarh Plains Agroclimatic Zone of Chhattisgarh, India
Leena Thakur, N. Lakpale, P.K. Tiwari and Ashish Pradhan*
Department of Plant Pathology, College of Agriculture, IGKV, Raipur (CG) 492012, India
*Corresponding author
Abstract:

Chhattisgarh state (a part of the eastern zone) is the most congenial for rice cultivation as well as for disease development. The rice crop is known to suffer by many biotic and abiotic stresses and among biotic stresses, diseases are pivotal one. In the present study, epidemiological aspect of sheath blight disease of rice carried out. Sheath blight disease progression and apparent infection rate (r) were maximum during observation period from 1-15 and 16-30 October in over the four years kharif season. During this period of time, crop growth stage of test variety ‘Swarna’ was in maximum tillering to panicle initiation stage coincide with the Tmax range (30.5-32.6oC) and SSH range (4.2-9.6) which favours the maximum apparent rate of infection by Rhizoctonia solani and resulted in maximum sheath blight disease progression. In all the maximum value of AUDPC calculated in first date of sowing followed by second date of sowing and least in third date of sowing during kharif 2013, 2015 and 2016. In kharif 2014, it was maximum in first date of sowing followed by third date of sowing and least in second date of sowing. Year wise correlation analysis between weather parameters and sheath blight disease severity suggest that Tmax and SSH had positive effect in the development of sheath blight disease of rice during kharif season.


Keywords: Epidemiology, Sheath blight, Correlation, Weather variables.
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How to cite this article:

Leena Thakur, N. Lakpale, P.K. Tiwari and Ashish Pradhan. 2017. Epidemiological Studies on Sheath Blight Disease of Rice in Chhattisgarh Plains Agroclimatic Zone of Chhattisgarh, India.Int.J.Curr.Microbiol.App.Sci. 6(11): 1351-1361. doi: https://doi.org/10.20546/ijcmas.2017.611.161