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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.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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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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Original Research Articles

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): 2400-2405
DOI: https://doi.org/10.20546/ijcmas.2020.902.273


Management of Purple Blotch Complex in Onion Seed Crop in Faridkot district of South-Western Punjab
Gurdarshan Singh* and Jagdish Grover
1Krishi Vigyan Kendra, Faridkot, India
*Corresponding author
Abstract:

Four systemic fungicides viz., Folicur 25 EC (tebuconazole), Tilt 25 EC (propiconazole), Score 25 EC (difenoconazole), Amistar Top 325 SC (azoxystrobin 18.2% + difenoconazole 11.4%) and one non-systemic fungicide viz., Indofil M-45 75 WP (mancozeb) were evaluated under field conditions for their efficacy to manage purple blotch complex of onion caused by Alternaria porri and Stemphylium vesicarium. Field efficacy of the fungicides at different concentrations was determined in controlling the purple blotch complex of onion seed crop (cultivar PRO-6) during the Rabi season 2015-16 and 2016-17. The field trial was conducted in Randomized Block Design (RBD) with six treatments along with four replications. All the recommended agronomical practices were followed during experimentation. The bulbs were planted during first fortnight of November at spacing of 67.5 cm X 45 cm. Foliar application of fungicides was started as soon as first symptom of the disease was noticed followed by three sprays at 15 days interval in bulb seed crop. The triazole fungicides, tebuconazole and difenoconazole proved superior in inhibiting growth of A. porri and S. vesicarium under field conditions. Four foliar sprays of tebuconazole 25 EC (Folicur) @ 0.1 per cent at fortnightly interval most effectively managed purple blotch complex in onion seed crop under field conditions with highest Benefit: Cost ratio (91.9:1). The present findings can go a long way in devising strategy for the integrated management of A. porri, S. vesicarium singly as well as in combination with other fungicides


Keywords: Fungicides, Management, Onion, Purple blotch complex, Benefit: Cost ratio, Triazole
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How to cite this article:

Gurdarshan Singh and Jagdish Grover. 2020. Management of Purple Blotch Complex in Onion Seed Crop in Faridkot district of South-Western Punjab.Int.J.Curr.Microbiol.App.Sci. 9(2): 2400-2405. doi: https://doi.org/10.20546/ijcmas.2020.902.273