In-vitro Evaluation of Fungicides against False Smut (Ustilaginoidea virens) Disease of Rice

Author: Ashwani Kumar, Anupam Kumar, Vinod Kumar, Rajan Kamboj, Ravinder, Ritika Singh, Neeraj Bhardwaj, Ashish and Preeti Thakur

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Abstract

Rice (Oryzae sativa L.) is the staple food for more than 3.5 billion people around the world. Rice is constantly attacked by biotic stresses namely pathogens, insects and weeds etc. False smut of rice is a destructive inflorescence disease caused by U. virens (Cooke) Takahashi. The disease caused yield losses of rice by 2.8–81 % depending on the disease intensity. It is categorized as a minor disease due to its sporadic occurrence. The poisoned food method was employed for the evaluation of chemicals in-vitro against U. virens. The experiment was conducted to find out the efficacy of different fungicides on the mycelial growth of U. virens causing false smut disease of rice. All the fungicides tested significantly inhibited the mycelial growth of U. virens over control. After 72 hours, the maximum inhibition (92.93%) was recorded in T9- Tricyclazole 75% WP at 200 ppm and T3 (57.17%), respectively. Whereas, Minimum inhibition per cent of mycelial growth were recorded in T1- Propiconazole 20% EC (21.41%).

Keywords

Rice, Ustilaginoidea virens, Mycelial Growth, Fungicides and disease

Conclusion

It was observed that Tricyclazole 75% WP was found most effective resulting maximum inhibition 92.93% of Ustilaginoidea virens at 200ppm while Propiconazole 20 % EC and Carbendazim 50% WP both showed minimum radial growth after 72 hours.

References

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How to cite this article

Ashwani Kumar, Anupam Kumar, Vinod Kumar, Rajan Kamboj, Ravinder, Ritika Singh, Neeraj Bhardwaj, Ashish and Preeti Thakur (2024). In-vitro Evaluation of Fungicides Against False Smut (Ustilaginoidea virens) Disease of Rice. Biological Forum – An International Journal, 16(1): 219-222.