Indexing

Bioefficacy of Potential Fungicides and Biocontrol Agents for Efficient Management of Soybean Pod Blight

Author: Roja S. and Sunil Kulkarni

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Abstract

To know the field efficacy of any new fungicide molecules and bioagents, there is a need to evaluate fungicides in vitro which provides useful and preliminary information regarding efficacy against pathogen within a shortest period of time and therefore, serves as a guide for field testing. An experiment was conducted to evaluate the bioefficacy of fungicides and bioagents against Colletotrichum truncatum causing pod blight of soybean at Deparment of Plant Pathology, UAS Raichur. Among seven non-systemic fungicides, systemic fungicides and combi fungicides evaluated against C. truncatum under in vitro, copper oxychloride 50 % WP, hexaconazole 5 % EC, propiconazole 25% EC, carbendazim 50 % WP, thiophanate methyl 70 % WP, and all the combi fungicides were found highly effective in inhibiting the complete mycelial growth of the pathogen with cent per cent mycelial inhibition. Among bioagents evaluated, T. harzianum and T. asperellum showed maximum mycelial growth inhibition. Effective fun

Keywords

Soybean, pod blight, Fungicides, Per cent inhibition, management.

Conclusion

Copper oxychloride 50 per cent WP, hexaconazole 5 per cent EC, propiconazole 25 per cent EC, carbendazim 50 per cent WP, thiophanate methyl 70 per cent WP, and all combi fungicides were found to be highly effective in inhibiting the pathogen's complete mycelial growth with 100 per cent mycelial inhibition, according to the results of this study. Seed treatment with T. harzianum (5g/ kg seed), followed by sprays with tebuconazole + trifloxystrobin (0.05 per cent) at 60 DAS and sprays of Pseudomonas fluorescens (1 per cent) at 75 DAS, were found to be significantly more effective than all other treatments in managing soybean pod blight, with a minimum disease index (PDI) of 12.62 and the highest yield (20.33 q/ ha) and BC ratio of 1.76.

References

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How to cite this article

Roja S. and Sunil Kulkarni (2022). Bioefficacy of Potential Fungicides and Biocontrol agents for Efficient Management of Soybean Pod Blight. Biological Forum – An International Journal, 14(1): 1169-1178.