International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:6, June, 2018

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.2018.7(6): 2251-2255

Efficacy of Different Fungicides against Alternaria tagetica Causing Leaf Spot and Flower Blight of Marigold under in vitro Condition
Mahadev Shindhe, H. Narayanaswamy, R. Murali* and H. Nagaraja
Department of Plant pathology, College of Agriculture Shivamogga, University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka, India
*Corresponding author

Marigold is susceptible to a number of fungal diseases, among Alternaria leaf spot and flower blight caused by Alternaria tagetica was the most destructive and economically important disease may cause upto 50-60 % yield losses. In this experiment seven different systemic, contact and combi product fungicides were tested in different concentrations against Alternaria tagetica under in vitro condition. The results revealed that, among the fungicide tested, inhibition of growth of the fungus ranged from 61.81 per cent to 100.00 per cent. Propiconazole and Hexaconazole were proved to be the most effective fungicides and recorded the maximum reduction of mycelial growth of fungus (100%) in all concentrations which were superior over all other fungicides. The next best treatment was Difenconazale (88.36%) followed by Mancozeb (84.76%). Whereas, the least inhibition of mycelial growth was recorded in Propineb (61.81%). The effects of concentrations on A. tagetica, irrespective of chemicals were found significant and most effective at 0.25 % concentration. Maximum reduction of mycelial growth (87.06%) was observed at 0.25 % concentration which was significantly superior over the rest of the concentrations.

Keywords: Marigold, leaf spot and flower blight, in vitro, Fungicide, concentrations

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How to cite this article:

Mahadev Shindhe, H. Narayanaswamy, R. Murali and Nagaraja H. 2018. Efficacy of Different Fungicides against Alternaria tagetica Causing Leaf Spot and Flower Blight of Marigold under in vitro Condition.Int.J.Curr.Microbiol.App.Sci. 7(6): 2251-2255. doi:
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