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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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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(5): 1737-1745
DOI: https://doi.org/10.20546/ijcmas.2017.605.188


Effective Management of Purple Blotch of Onion Caused by Alternaria porri (Ellis) Through Host Resistance, Fungicides and Botanicals
Priyanka Jhala*, B.L. Mali and M.K. Meena
Department of Plant Pathology, Rajasthan College of Agriculture, MPUAT, Udaipur, India
*Corresponding author
Abstract:

An experiment for the management of purple blotch of onion (Allium cepa L.) caused by Alternaria porri (Ellis) was carried out in Department of Plant Pathology, Rajasthan College of Agriculture, Udaipur during 2014-2015.Among 5 cultivars evaluated Nasik red showed susceptibility and Agri found light red showed resistance reaction against A. porri infection. Out of the six fungicides tested in vitro, Difenaconazole completely inhibited the mycelial growth of A. porri at concentration of 250, 500, 1000 and 2000 ppm, followed by Tebuconazole at 1000 and 2000 ppm. Neem formulations Azadirachtin was found effective in vitro followed by Garlic extract and Neem oil proved to be least inhibitor. Under pot culture study, combination of Difenaconazole and Azadirachtin was found most effective when applied as foliar spray. The application of fungicide and botanical resulted in significantly great disease control, over their individual applications as well as over untreated control. It would therefore, be desirable to apply integrated management practices to reduce the chances of development of resistance against fungicides, for effective and sustainable management of purple blotch of onion.


Keywords: Purple blotch, Onion, Host resistance, Fungicides,
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How to cite this article:

Priyanka Jhala and B.L. Mali. 2017. Effective Management of Purple Blotch of Onion Caused by Alternaria porri (Ellis) Through Host Resistance, Fungicides and Botanicals.Int.J.Curr.Microbiol.App.Sci. 6(5): 1737-1745. doi: https://doi.org/10.20546/ijcmas.2017.605.188