ARCHIVES
VOL. 8, ISSUE 12 (2023)
Evaluation of antifungal activities of some plant extracts against Alternaria brassicae causing spot disease of mustard
Authors
Manish Anand, Ovaid Akhtar, Mohd Shahbaan, Ifra Zoomi, Dheeraj Pandey
Abstract
Spot disease is a serious but underestimated pathogenic disease in
India. In this study an extensive field survey was conducted to record the
disease incidence and severity in Indian mustard caused by fungal pathogen Alternaria
brassicae. In the month of January 2022, 100% disease incidence was
recorded while, disease severity ranged between 11 to 22 % with average 15.4 %
(SD = 3.1 %). Typical symptoms of spot disease on the leaves caused by A.
brassicae were identified. The pathogen was macroscopically as well as
microscopically characterized and cultured in the laboratory on potato dextrose
agar medium. In order to explore the botanical fungicide aqueous extract of 14
different plants viz., Lemon, Bael, Curry-leaf, Neem, Duranta, Nepata,
Zinger, Garlic, Tecoma, Parthenium, Cinnamon, Asparagus, Zamia
and Pteris were tested against pathogen in the laboratory. Out of the 14
plants, only aqueous extract of garlic exhibited the antifungal property and
inhibited 100 % conidial germination within 5 hours of incubation in cavity
slides under germination box. Minimum Inhibitory Concentration (MIC) of the
garlic extract against pathogen was recorded as 0.75 %. This garlic extract
after successful field-trials could be used to control the spot disease. As the
garlic extract is a botanical fungicide, this can be applied without causing
any significant hazards to the environment.
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Pages:24-31
How to cite this article:
Manish Anand, Ovaid Akhtar, Mohd Shahbaan, Ifra Zoomi, Dheeraj Pandey "Evaluation of antifungal activities of some plant extracts against <i>Alternaria brassicae</i> causing spot disease of mustard". International Journal of Botany Studies, Vol 8, Issue 12, 2023, Pages 24-31
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