Effect of different Nanofungicides on Radial Mycelial Growth of Bipolaris sorokiniana causing Spot Blotch of Wheat

Author: Bipin Verma, Samir Kumar Biswas, Naimish Kumar and Gajendra Pratap

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Abstract

Wheat (Triticum aestivum L.) is the most important food grain crop in India after rice as well as recognized as a world’s major cereal crop and staple food of many regions. Wheat crops face the threat of numerous pathogens, with Bipolaris sorokiniana emerging as a significant menace in wheat-growing regions characterized by hot and humid climates. In South Asia, the estimated average yield losses caused by this disease amount to 19.6 percent, while in India, the figure stands at 15.5 percent. Particularly in the eastern part of India, under severe conditions, yield losses can soar to as high as 100 percent. However reported use of same chemicals may raise resistant strain among the pathogens. Therefore, use of Nano-fungicidal control of spot blotch disease cannot be overstated. Though, the disease can be managed with various nanofungicides under in vitro condition assessed for their efficacy against the disease. The effect of four nanofungicides i.e., Agritecnanofungicide, Silver nanofungicide, Selenium nanofungicide and Silica nanofungicide against B. sorokiniana was evaluated at different concentrations at different concentrations (50, 75 and 100 ppm) by poison food technique. The in vitro experiment revealed a noticeable reduction in the radial mycelial growth of B. sorokiniana as the concentration of nanofungicides increased. Specifically, at 8 days after inoculation (DAI), the following nanofungicides at a concentration of 100 ppm exhibited the highest levels of mycelial growth inhibition when compared to the control: Silver nanofungicide (86.41%), Agritecnanofungicide (80.23%), Selenium nanofungicide (74.88%), and Silica nanofungicide (71.90%).

Keywords

Nanofungicide, Fungicide, Spot blotch, Radial mycelial growth, Growth inhibition

Conclusion

Wheat crop is attacked by a number of pathogens among them Bipolaris sorokiniana emerged as a major threat in hot and humid wheat growing regions. For management systemic and non-systemic fungicides are used but use of same chemicals may raise resistant strain among the pathogens. Therefore, use of nanofungicidal control of spot blotch disease cannot be overstated. Nanofungicides are a safe and effective alternative to chemical fungicides in mycelial growth inhibition of B. sorokiniana and are regarded as the best option in this scenario. Nanofungicides like Agriteck, Silver, Selenium and Silica were used to treat pathogens that cause plant diseases. It was observed that the higher concentrations of nanofungicides considerably slowed the radial mycelial growth of B. sorokiniana under in vitro conditions. At 8 DAI, Silver nanofungicide @100 ppm (86.41%), Agritecnanofungicide @100 ppm (80.23%), Selenium nanofungicide @100 ppm (74.88%) and Silica nanofungicide @ 100 ppm (71.90%) had the highest inhibition of mycelial growth compared to the control Therefore, using these nanofungicides as antifungal agents has the potential to decrease the environmental pollution and toxicity associated with chemical fungicides.

References

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How to cite this article

Bipin Verma, Samir Kumar Biswas, Naimish Kumar and Gajendra Pratap (2023). Effect of different Nanofungicides on Radial Mycelial Growth of Bipolaris sorokiniana causing Spot Blotch of Wheat. Biological Forum – An International Journal, 15(9): 552-556.