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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
Publisher : Excellent Publishers
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.2017.6(12): 3634-3638
DOI: https://doi.org/10.20546/ijcmas.2017.612.419


Severity of Purple Blotch of Onion Caused by Alternaria porii in Northern Karnataka, India
S. Ravichandran1*, B.C. Kamanna3, K. Jayalakshmi2, V.I. Benagi3 and K.B. Yadahalli3
1Regional Plant Quarantine Station, DPPQS, Chennai, Tamil Nadu, India
2AINRP (Tobacco), ZAHRS, University of Agricultural and Horticultural Sciences, Shivamogga- 577225, Karnataka, India
3Department of Plant Pathology, University of Agricultural Sciences,Dharwad- 580005, Karnataka, India
*Corresponding author
Abstract:

Successful cultivation of onion in recent years has met with different problems such as pests and diseases. Among the various fungal diseases, purple blotch caused by Alternaria porri (Ellis) Cif. is one of the most serious disease of onion which causes extensive damage to bulbs as well as seed crop. The study was carried out in northern Karnataka. Survey on the disease in the field showed the extent of purple blotch disease affecting the crop and quality of the bulbs in different locations which was widespread particularly in rainy season / high moisture conditions and incidence and severity of disease was more in Uttara Kannada district of Honnali village (69.33 PDI). While the lowest (17.33 PDI) was recorded in Annigere village in Dharwad district.


Keywords: Onion, Survey, Percent disease index, Aternaria porii.
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How to cite this article:

Ravichandran, S., B.C. Kamanna, K. Jayalakshmi, V.I. Benagi and Yadahalli, K.B. 2017. Severity of Purple Blotch of Onion Caused by Alternaria porii in Northern Karnataka.Int.J.Curr.Microbiol.App.Sci. 6(12): 3634-3638. doi: https://doi.org/10.20546/ijcmas.2017.612.419