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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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Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(11): 193-203
DOI: https://doi.org/10.20546/ijcmas.2019.811.024


Epidemiological Study of Collar Rot Disease of Indian Bean caused by Sclerotium rolfsii in South Gujarat
Tushar V. Ghevariya* and P.R. Patel
Department of Plant Pathology, NM College of Agriculture, Navsari Agricultural University, Navsari - 396 450, Gujarat, India
*Corresponding author
Abstract:

Collar rot of Indian bean caused by Sclerotium rolfsii Sacc. is exerting a major threat on Indian bean growers in South Gujarat. The initiation of the disease was first noticed after 10 and 15 days of sowing in susceptible variety GNIB-21 which was grown on 11st Oct. and 12nd Oct. of 2017-18 and 2018-19, respectively. Since then, there was linear progress of the disease during both the seasons. The disease appeared 2.6% at initial stage 44th SMW and reached highest 37.2% at maturity 3rd SMW during 2017-18. In 2018-19, disease appeared 2.75% at initial stage 44th SMW and reached highest 38.47% at maturity 3rd SMW. However in pooled of two years, the first symptom of collar rot was recorded on 44th SMW (2.6%) and reached to 3rd SMW (37.2%). Correlation coefficient study between weather parameters and disease incidence indicated that all the parameters jointly played an important role in the development of collar rot disease. Moreover, morning and afternoon 5cm and 10cm depth soil temperature, soil moisture 5cm and 10cm were found to play important role in the disease development. Co-efficient of determination, R2-value i.e., 0.675, 0.954 and 0.881 percent were found high during 2018, 2019 and pooled of two year, respectively. These high R2-value indicating a strong association between percent disease incidence to weather parameters.


Keywords: Epidemiology, Collar rot, Indian bean, Correlation, Regression, Weather Parameter
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How to cite this article:

Tushar V. Ghevariya and Patel, P.R. 2019. Epidemiological Study of Collar Rot Disease of Indian Bean caused by sclerotium rolfsii in South Gujarat.Int.J.Curr.Microbiol.App.Sci. 8(11): 193-203. doi: https://doi.org/10.20546/ijcmas.2019.811.024