International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 8, Issue:2, February, 2019

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.2019.8(2): 1632-1639

In vitro Evaluation of Fungicides Plant Extracts and Bio-agents against Alternaria helianthi causing Leaf Blight of Sunflower
G. Mahadevaswamy1*, G. Vijayalakshmi2 and G. Gangadharanaik1
1Department of Plant Pathology, University of Agricultural and Horticultural Sciences, Shimoga, Karnataka, India – 577 225
2Department of Plant Pathology, University of Agricultural Sciences,
Bengaluru -560065, India
*Corresponding author

Alternaria leaf blight of sunflower caused by Alternaria helianthi is an important disease of sunflower. The study conducted on in vitro evaluation of new molecules of fungicides and plant extracts against Alternaria helianthi, causal agent of Alternaria blight of sunflower. In vitro evaluation of fungicides revealed that, among four systemic fungicides hexaconazole and propiconazole were highly effective in inhibiting the mycelial growth with 100% inhibition among non systemic fungicides the maximum inhibition of mycelial growth was found in captan (86.30%) at 600 ppm concentration followed by copper oxy chloride (84.07%) whereas, among the botanicals neem seed kernel extracts at 10 per cent(43.74%) showed positive effect on inhibition of pathogen mycelium growth followed by neem leaf extracts(25.26%). Trichoderma harzianum shows the best bio agents against Alternaria helianthi with highest per cent inhibition (72.48%).

Keywords: In-vitro evaluation, Fungicides, Plant extracts, Bio agents, Alternaria helianthi

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How to cite this article:

Mahadevaswamy, G., G. Vijayalakshmi and Gangadharanaik, G. 2019. In vitro Evaluation of Fungicides Plant Extracts and Bio-agents against Alternaria helianthi causing Leaf Blight of Sunflower.Int.J.Curr.Microbiol.App.Sci. 8(2): 1632-1639. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.