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Practical Utilization of Botanical Extracts and Microbial in Controlling Dieback Disease of Tea [ Camellia sinensis (L) O. Kuntze] Caused by Fusarium solani (Mart.) Sacc. | Sarmah 1 | Journal of Tea Science Research

Research Article

Practical Utilization of Botanical Extracts and Microbial in Controlling Dieback Disease of Tea [Camellia sinensis (L) O. Kuntze] Caused by Fusarium solani (Mart.) Sacc.  

Satya Ranjan Sarmah1 , Prodip Kumar Baruah2 , Suresh Chandra Das2
1 Department of Mycology and Microbiology, Tea Research Association (TRA), Tocklai Tea Research Institute (TTRI), Jorhat – 785008, Assam, India
2 School of Biological Sciences, University of Science & Technology, Meghalaya, India
Author    Correspondence author
Journal of Tea Science Research, 2017, Vol. 7, No. 2   doi: 10.5376/jtsr.2017.07.0002
Received: 09 Feb., 2017    Accepted: 01 Mar., 2017    Published: 03 Mar., 2017
© 2017 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Sarmah S.R., Baruah P.K., and Das S.C., 2017, Practical utilization of botanical extracts and microbial in controlling dieback disease of tea [Camellia sinensis (L) O. Kuntze] caused by Fusarium solani (Mart.) Sacc., Journal of Tea Science Research, 7(2): 11-19 (doi: 10.5376/jtsr.2017.07.0002)

Abstract

In Northeast Indian tea plantations infection of Fusaruim solani, resulting dieback of tea plant is increasing which causes considerable crop loss during the recent times. In this investigation, native plant extracts, i.e. Acorus calamus L., Azadirachta indica A. Juss., Clerodendrum viscosum Vent., and Xanthium strumarium L. and microbials i.e. Bacillus subtilis and Trichoderma viride Pers. were utilized to evaluate the efficacy in controlling dieback disease of tea. These extracts inhibited the growth of Fusarium solani by 60-90%. In field application of C. viscosum and X. strumarium extracts reduced the disease up to 89.3% and 81% respectively. More than 70% disease reduction was observed when aqueous extracts of A. calamus and A. indica were used separately. Maximum disease reduction was achieved up to 86.9% due to application of T. viride. The results, thus, suggested the potential use of herbal extracts and microbial strains as an effective component of integrated disease management (IDM) schedule in the organic tea farming. The methods and rate of application are also discussed.

Keywords
Bio-assay; Biocontrol; Fusarium solani; North-East India; Tea
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