Efficacy of Bioagents, Plant Extracts and Fungicides against Chilli Powdery Mildew incited by Leveillula taurica (Lev.) Arn

ISSN: 0973-7510

E-ISSN: 2581-690X

Open Access

Efficacy of Bioagents, Plant Extracts and Fungicides against Chilli Powdery Mildew Incited by Leveillula taurica (Lev.) Arn

M.V. Hareesh¹, R. Ganesha Naik¹, K. Jayalakshmi¹, T. Basavaraj Naik² and S. Pradeep³

¹Department of Plant Pathology, College of Agriculture, University of Agricultural and Horticultural Sciences, Shivamogga – 577 225, India.

²Agricultural and Horticultural Resserch Station, Bavikere, University of Agriculturla and Horticultural Sciences, Shivamogga – 577 144, India.

³Organic Farming Research Centre, University of Agricultural and Horticultural Sciences, Shivamogga – 577 225, India.

J Pure Appl Microbiol. 2016;10(4):3105-3109

https://doi.org/10.22207/JPAM.10.4.85 | © The Author(s). 2016

Received: 16/08/2016 | Accepted: 04/10/2016 | Published: 31/12/2016

Abstract

Powdery mildew of chilli incited by Leveillula taurica (Lev.) Arn. is a devastating disease of chilli. In the present investigation, management of Powdery mildew disease was undertaken during 2015-16 by the application of fungicides, bioagents and botanicals under field conditions. Among the twelve treatments, Myclobutanil (0.1 %) spray was found most effective in reducing the disease severity (PDI 17.37) followed by Triadimefon (PDI 20.70) and Hexaconazole (PDI 23.75) compared to control (PDI 88.24) respectively. The bioagents, Pseudomonas fluorescens (PDI 61.14) and Trichoderma harzianum (PDI 63.79) and the plant extracts viz., Azardiracta indica (PDI 62.56) and Allium sativa L. (PDI 63.54) were found less effective in reducing the disease severity as compared to fungicidal treatments respectively. Further, Myclobutanil and Triadimefon recorded higher dry chilli yield of 12.72 and12.27 q/ha. The highest cost: benefit ratio was obtained in Myclobutanil (1:2.43) sprayed plots followed by Triadimefon (1:2.39) respectively.

Keywords

Severity, Leveillula taurica, Bioagents, Plant extracts, fungicides

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