Vol. 11, Issue 9 (2022)

Author(s):
Karnewar AB, Pawar GS and Salunke DV

Abstract:
The Indian Banyan (Ficus benghalensis) is perennial plant. Rhizospheric activities of some plants stimulates beneficial microflora which helps in plant growth and disease management. Present investigations were conducted to study in vitro antagonistic ability of the microflora isolated from the rhizospheric soil of banyan tree against Pythium aphanidermatum. The results revealed that, all the antagonists successfully inhibited growth of test pathogen over untreated control. It was observed that treatment T₃ (Trichoderma viride) found most effective showed highest zone of inhibition i.e. 69.62% followed by T₂ (Trichoderma hamatum) and T₁ (Trichoderma harzianum) with percent mycelial inhibition 63.69% and 62.96% respectively. On comparison with bioagents of VNMKV Parbhani isolated strains of Trichoderma hamatum and Trichoderma viride (63.69% and 69.62%) respectively were better antagonists over available strains of Trichoderma hamatum and Trichoderma viride (61.47% and 60.47%) respectively. Isolated Pseudomonas fluorescens (46.66%) Pseudomonas striata (34.07%) Bacillus subtilis (38.51%), Trichoderma koningii (39.99) are at par to the available strins of Pseudomonas fluorescens (47.40%) Pseudomonas striata (34.07%) Bacillus subtilis (39%), Trichoderma koningii (42.21%) respectively.