Efficacy of Rhizospheric Microorganism Against Wilt of Ashwagandha (Withania somnifera DUNAL) and their Influence on Its Growth
2014
Zuhaib, Mohammad | Ashraf, Shabbir
Withania somnifera (L.) Dunal commonly known as ‘ashwagandha’ has a great reputation in traditional Indian medicine, Among other constraints Fusarium wilt caused by Fusarium solani is the major limiting factor in the production of Ashwagandha. An effort was made todevelop an eco-friendly approach to control Fusarium wilt in Ashwagandha using Trichoderma virens, Trichoderma harzianum and Aspergillus niger. Besides direct interaction with plant pathogens, bioagents have been reported to induce systemic resistance in plants. In the present study Trichoderma virens, Trichoderma harzianum and Aspergillus niger were evaluated for their efficacy to control Fusarium wilt. All of the three bio-agents used in this study significantly reduces the incidence of wilt and percent reduction in wilt incidence was recorded as 69.54%, 51.52% and 55.85% in the treatment of Trichoderma virens, Trichoderma harzianum and Aspergillus niger respectively. Seed treatment with Trichoderma virens, Trichoderma harzianum and Aspergillus niger significantly increases the seed germination, plant height, root thickness, number of branches per plant. From the post hoc tukey HSD, it is clear that all treatments are significantly different to each other and T.virens proved to be the best effective treatment.
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