Vol. 12, Issue 7 (2023)

Author(s):
V Ravichandran, PA Saravanan, P Veeramani, M Velmurugan, S Ganapathy, J Jayakumar and T Raguchander

Abstract:
The bio-suppression efficiency of various isolates of Chaetomium against C. paradoxa was tested. In the dual culture technique, the Chaetomium globosum isolate cg 6 was found to possess maximum inhibition of 60.37% inhibition on Ceratocystis paradoxa mycelium. Sugarcane bud treated with C. globosum isolate cg 6 had higher germination, vigour index in both the tested varieties CoC 25 and Co 86032 compared to other isolates tested. Field trial conducted for two years depict that sett treatment @ 4 g/l + soil application of talc formulated Chaetomium globosum cg 6 before planting and at 30 and 90 DAP @ 2.5 kg per hectare recorded higher germination 80.87% with higher tiller and shoot population with lower sett rot disease incidence of 8.78% which is 33.52 reduction in disease compared to control and recorded higher yield of 117 t/ha.