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 2022 - IJCMAS--ICV 2022: 95.28 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020] For more details click here

Login as a Reviewer

See Guidelines to Authors
Current Issues
Download Publication Certificate

Original Research Articles                      Volume : 10, Issue:3, March, 2021

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2021.10(3): 290-293

Evaluation of fungicides in vitro against Alternaria porri causing Purple Blotch of Onion
Dibyajyoti Swain*, Subhashree subhasmita Paikaray, K. C. Sahu and N. C. Swain
Department of Plant Pathology, and Entomology, Institute of Agricultural Sciences, Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar, India
*Corresponding author

Purple blotch disease of onion (Allium cepa L.) is an important foliar disease which is incited by a fungus Alternaria porri. This fungus is also a pathogen of leek, garlic and chive. It is responsible for causing severe yield losses ranging from 2.5% to 97% in both bulb and seed crop of onion (Gupta and Pathak, 1998). Though India is the second largest producer of onion in the world but it it not sufficient enough to meet the demands for both domestic requirement and export. The present experiment was conducted in a randomized block design with four replications. Nine fungicides were evaluated in vitro against the pathogen Alternaria porri and the percent inhibition was estimated during the experimentation. The percent inhibition showed that Propiconazole (0.2%), Tebuconazole (0.15%), Carbendazim (0.1%), Hexaconazole (0.2%) and Carbendazim + Mancozeb (0.15%) reduces the growth of the fungus completely (100%). Metalaxyl 4% w/w+ Mancozeb 64% w/w reduces the growth of the fungus upto 90%. Tricyclazole 75% WP and Azoxystrobin 23% SC reduces the fungal growth upto 83% and least reduction of fungal growth observed by Copper oxychloride 50% WP upto 67%.

Keywords: Onion, Purple blotch, Fungicides, Alternaria porri, In vitro evaluation

Download this article as Download

How to cite this article:

Dibyajyoti Swain, Subhashree Subhasmita Paikaray, K. C. Sahu and Swain, N. C. 2021. Evaluation of fungicides in vitro against Alternaria porri causing Purple Blotch of Onion.Int.J.Curr.Microbiol.App.Sci. 10(3): 290-293. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.