Efficiency of isolates of Trichoderma spp. to suppress Rhizoctonia solani in sesame

Authors: M.A. AL-Hamdany et al.

Citation: 1988. J. Agri. Water Reso. Res. 7(2): 107-114

Abstract:

          Fifteen isolates of Trichoderma spp. from rhizosphere and rhizoplane of sesame plants were isolated on Tomato Paste Agar medium. The antagonistic activities of these isolates against R. solani; the causal agent of damping-off in sesame were investigated under field conditions. Data of total loss in seedlings revealed significant variations among the isolates of Trichoderma spp. However, the loss percentage was significantly reduced when the isolates T5, T17, and T21 were used. The loss percentages were 25.28, 27.14 and 25.53 respectively compared to 89.90% when R. solani was used only. The results showed that most isolates of Trichoderma spp. used in this study be able to suppress R. solani in spite of heavy inoculum used.                   

Key Words: Sesame, Damping-off, R.solani, Trichoderma isolates, Biological control, TPA medium.