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All Journal Journal of Agriculture and Applied Biology Journal of Agriculture and Applied Biology ( JAAB)
Minhaz Ahmed
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Use of non-chemical methods for the management of southern blight disease of carrot incited by Sclerotium rolfsii M. Tanbir Rubayet; Farhana Prodhan; M. Shamim Hossain; Minhaz Ahmed; M. Abdullah Al Mamun; M. Khurshed Alam Bhuiyan
Journal of Agriculture and Applied Biology Vol 1 No 2 (2020): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.01.02.05

Abstract

This experiment was conducted to assess the effect of Trichoderma harzianum, soil solarization, and biofumigant on southern blight dis-ease of carrot incited by Sclerotium rolfsii isolate CS 5. A series of in-vitro and in-vivo trials laid out to select a virulent isolate of S. rolfsii against the carrot variety New Kuroda and evaluated the mustard, cabbage, cauliflower, and broccoli leaf extracts for choosing an effec-tive biofumigant against test pathogen. Mustard was the most effec-tive in inhibiting the radial growth, and sclerotia formation (80.37 and 83.37%) of S. rolfsii (isolate CS 5) at 40% level of concentration followed by cabbage leaf extract (62.22 and 68.69%). On the contrary, a total of 10 isolates of T. harzianum were screened against the test pathogen on Potato Dextrose Agar (PDA) medium for choosing a dominant isolate of T. harzianum. The isolate Th-6 was found as the most active in inhibiting the radial growth (84.44%) of S. rolfsii fol-lowed by Th-1 (75.56%). In the application of T. harzianum, biofumi-gation, and soil solarization, the treatment appeared to be the most superior in reducing pre- and post-emergence mortality of carrot during secondary field trials. The lowest southern blight disease inci-dence (10.77%), and disease severity (12.78%) were found at the same treatment. Subsequently, the yield of carrot was increased 155.18% which might be due to the reduction of carrot disease as well as the addition of organic materials in the soil.
Use of non-chemical methods for the management of southern blight disease of carrot incited by Sclerotium rolfsii M. Tanbir Rubayet; Farhana Prodhan; M. Shamim Hossain; Minhaz Ahmed; M. Abdullah Al Mamun; M. Khurshed Alam Bhuiyan
Journal of Agriculture and Applied Biology Vol 1 No 2 (2020): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.396 KB) | DOI: 10.11594/jaab.01.02.05

Abstract

This experiment was conducted to assess the effect of Trichoderma harzianum, soil solarization, and biofumigant on southern blight dis-ease of carrot incited by Sclerotium rolfsii isolate CS 5. A series of in-vitro and in-vivo trials laid out to select a virulent isolate of S. rolfsii against the carrot variety New Kuroda and evaluated the mustard, cabbage, cauliflower, and broccoli leaf extracts for choosing an effec-tive biofumigant against test pathogen. Mustard was the most effec-tive in inhibiting the radial growth, and sclerotia formation (80.37 and 83.37%) of S. rolfsii (isolate CS 5) at 40% level of concentration followed by cabbage leaf extract (62.22 and 68.69%). On the contrary, a total of 10 isolates of T. harzianum were screened against the test pathogen on Potato Dextrose Agar (PDA) medium for choosing a dominant isolate of T. harzianum. The isolate Th-6 was found as the most active in inhibiting the radial growth (84.44%) of S. rolfsii fol-lowed by Th-1 (75.56%). In the application of T. harzianum, biofumi-gation, and soil solarization, the treatment appeared to be the most superior in reducing pre- and post-emergence mortality of carrot during secondary field trials. The lowest southern blight disease inci-dence (10.77%), and disease severity (12.78%) were found at the same treatment. Subsequently, the yield of carrot was increased 155.18% which might be due to the reduction of carrot disease as well as the addition of organic materials in the soil.
Co-Authors Farhana Prodhan M. Abdullah Al Mamun M. Khurshed Alam Bhuiyan M. Shamim Hossain M. Tanbir Rubayet