Inhibitory Effect of Nano-fungicides and Fungicides on Mycelia Radial Growth of Phytopthora infestans under in-vitro condition

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

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Abstract

Phytophthora infestans (Mont) de Barry, causing Late blight of potato is one of the most devastating diseases of potato worldwide. The disease is distributed all over the world like North & South America, Europe, Asian continents. P. infestans is a destructive pathogen that is causing huge losses to potatoes in hilly as well as plains regions of India and can cause yield losses up to 95% in epidemic conditions. The present study is carried out to check inhibitory effect of nanofungicides and fungicides against Phytophthora infestans. Among nanofungicides, silver nanofungicide @ 100 ppm was found highly effective and inhibit the growth by75.70% followed by agritecnanofungicide (68.81%) and selenium nanofungicide (66.67%) during 2021-22 and silver nanofungicide with 72.25% followed by agritecnanofungicide (63.82%) and selenium nanofungicide (61.58%) during 2022-23. Among fungicides, maximum inhibition (80.25%) was observed in matco @ 0.2% followed by mancozeb (73.72%) and propiconazole (71.01%) during 2021-22 and matco with 75.95% followed by mancozeb (68.97%) and propiconazole (66.13%) during 2022-23 under in vitro condition.

Keywords

Fungicide, Late blight, Radial mycelial growth and Growth inhibition

Conclusion

The data presented in Tables 1 and 2 indicated that both conventional fungicides and nano-fungicides significantly inhibited the radial growth of the P. infestans pathogen compared to the control. Among the conventional fungicides, Matco at 0.2% demonstrated the most effective inhibition, with 80.25% and 75.95% reductions in mycelial growth during 2021-22 and 2022-23, respectively. Among the tested nano-fungicides, Silver at 100 ppm was the most effective, achieving significant mycelial growth inhibition of 75.70% and 72.25% during the both years, respectively. All the nano fungicides and fungicides evaluated significantly control the disease. So, they can be used to manage the disease under natural field condition. Nanofungicides may be applied widely and safely instead of using the commercially available synthetic fungicides, which show higher toxicity to humans.

References

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How to cite this article

Gajendra Pratap, Samir Kumar Biswas, Bipin Verma and Naimish Kumar (2023). Inhibitory Effect of Nano-fungicides and Fungicides on Mycelia Radial Growth of Phytopthora infestans under in-vitro condition. Biological Forum – An International Journal, 15(10): 98-102.