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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 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(2): 429-439
DOI: https://doi.org/10.20546/ijcmas.2020.902.053


Effect of Silicon on Incidence and Severity of Purple Blotch Disease (Alternaria porri (Ellis) Cif.) in Onion (Allium cepa L.)
Mohammad Haroon1,2, Amruta S. Bhat1*, N.B. Prakash3, K.T. Rangaswamy3 and H. B. Lingaiah1
1College of Horticulture, UHS Campus, GKVK, Bengaluru-560065, Karnataka, India
2Department of Plant Protection, Kandahar University, Afghanistan
3College of Agriculture, UAS, GKVK, Bengaluru-560065, India
*Corresponding author
Abstract:

Effect of silicon on incidence and severity of purple blotch disease in onion was assessed by conducting field experiments at College of Horticulture Bengaluru. Silicon treatments significantly reduced the disease incidence and severity in two varieties (Bellary Red -Highly susceptible and Arka Kalyan - moderately resistant) of onion taken for the study. In both the varieties, least incidence and severity of disease was recorded in treatment receiving two sprays of silicic acid @ 4 ml L-1 which was superior to standard check (3 sprays of mancozeb @ 0.25 %) or other treatments followed by soil application of silicon @ 300 kg ha-1 . Silicic acid spray @ 4 ml L-1 reduced the disease incidence and severity by 34.88 and 28.93 per cent respectively in Bellary Red variety and it was reduced by 44.32 and 45.72 per cent respectively over untreated control in Arka Kalyan variety. Further, average bulb weight (Arka Kalyan- 58.33 g, Bellary Red -63.40 g) and total bulb yield (Arka Kalyan- 31.61 t ha-1, Bellary Red- 37.46 t ha-1) were also significantly higher with foliar application of silicic acid @ 4 ml L-1 in both the varieties over all other treatments. Hence, silicon application could be used as one of the ecofriendly strategies of purple blotch disease management in onion.


Keywords: Silicon, Onion, Purple blotch, Disease severity
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How to cite this article:

Mohammad Haroon, Amruta S. Bhat, N.B. Prakash, K.T. Rangaswamy and Lingaiah. H.B. 2020. Effect of Silicon on Incidence and Severity of Purple Blotch Disease (Alternaria porri (Ellis) Cif.) in Onion (Allium cepa L.).Int.J.Curr.Microbiol.App.Sci. 9(2): 429-439. doi: https://doi.org/10.20546/ijcmas.2020.902.053