National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Tobacco is one of the major important commercial crops grown throughout the country. Brown spot caused by Alternaria alternata is one of the major destructive disease causes heavy losses under field condition. Studies on cultural and physiological features of the pathogen are of immense use in understanding the nature of the pathogen. The radial growth of A. alternata was maximum on potato dextrose agar with colony diameter of 89.00 mm followed by Czapek’s dox agar (87.00 mm) colour of the mycelium varied from whitish to dark grey. Physiological studies revealed that growth of the pathogen was maximum at temperature of 25°C (329.13 mg) and lowest at 5°C (67.16 mg), while the maximum dry weight was observed at pH 6.5 (586.53 mg).
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