IN-VITRO IN-VIVO AND EFFICACY OF AGROCHEMICALS, BIOLOGICAL DERIVED FORMULATIONS AND BIOAGENTS AGAINST SHEATH BLIGHT OF RICE
DOI:
https://doi.org/10.48165/jpds.2026.21.01.01Keywords:
Agrochemicals, Bioagents, Biologically derived formulations, Rice, Sheath blightAbstract
Rhizoctonia solani Thanatephorus cucumeris in vitro Trichoderma viride in vivo Trichoderma virideKuhn (Teleomorph: (Frank) Donk) is a soil-borne, necrotrophic fungus belonging to the division Basidiomycota Sheath blight is one of the most important and widespread diseases affecting rice in all major rice-growing regions of the world and causes significant reductions in grain yield. In India, rice sheath blight has been reported to cause yield losses of up to 54.3%. Sheath blight management was evaluated through in vitro and in vivo studies using agrochemicals, biologically derived formulations and bioagents. Under conditions, Propiconazole 25% EC (T ) exhibited the highest mycelial growth inhibition (92.95–96.82%), whereas Pyrazosulfuron ethyl 10% WP (T ) was the least effective. Among biologically derived formulations, Beejamrit (T ) showed the highest efficacy, while Agniastra recorded the lowest growth inhibition. In bioagent evaluation, (T ) showed maximum growth inhibition (36.61%), whereas PSF 173 was least effective. Under conditions, Propiconazole 25% EC (T ) resulted in the minimum disease incidence (12.11%), while Pyrazosulfuron ethyl 10% WP showed the highest incidence. Among biologically derived formulations, Beejamrit (T ) recorded the lowest disease incidence (16.62%), whereas Agniastra (T ) showed the highest (26.24%). In bioagent treatments, (T ) effectively reduced disease incidence (18.68%), while PSF 173 (T ) recorded the maximum incidence (22.98%). These results highlight the comparative efficacy of chemical and biological approaches for managing sheath blight disease of rice.
References
Ali Khan, A., & Sinha, A. P. (2006). Influence of formulations, doses and time of application of botanicals and fungicides against Rhizoctonia solani causing sheath blight disease of rice. Annals of Plant Protection Sciences, 14(1), 157–161.
Bhat, K. A., Anwar, A., & Wani, A. H. (2009). Evaluation of biocontrol agents against Rhizoctonia solani Kühn causing sheath blight disease of rice under temperate ecology. Plant Disease Research, 24(1), 15–18.
Chahal, K. S., Sokhi, S. S., & Rattan, G. S. (2003). Investigations on sheath blight of rice in Punjab. Indian Phytopathology, 56, 22–26.
Chhabra, R., Sharma, R., Hunjan, M. S., Sharma, V. K., Thakur, S., & Chauhan, S. K. (2023). Efficacy of botanical extracts on imparting systemic acquired resistance against rice sheath blight incited by Rhizoctonia solani. Plant Disease Protection, 130(3), 551–569.
Kumar, V., Chaudhary, V. P., Kumar, D., Kumar, A., Sagar, S., & Chaudhary, S. (2017). Efficacy of fungal bioagents on rice sheath blight (Rhizoctonia solani) of Oryza sativa L. Journal of Applied and Natural Science, 9(4), 1916–1920.
Molla, K. A., Karmakar, S., Molla, J., Bajaj, P., Varshney, R. K., Datta, S. K., & Datta, K. (2020). Understanding sheath blight resistance in rice: The road behind and the road ahead. Plant Biotechnology Journal, 18, 895–915. https://doi.org/10.1111/pbi.13312
Nene, Y. L., & Thapliyal, P. N. (1993). Fungicides in plant disease control (3rd ed.). Oxford & IBH Publishing Company Pvt. Ltd.
Ou, S. H. (1985). Fungus diseases—Foliage diseases. In Rice Diseases (pp. 380). Commonwealth Mycological Institute.
Pancheshwar, D. K., Varma, R. K., Gupta, P. K., & Gharde, Y. (2012). Molecular variability of Rhizoctonia bataticola causing charcoal rot of soybean using RAPD markers. Annals of Plant Protection Sciences, 20(1), 148–153.
Pathak, H., Tripathi, R., Jambhulkar, N. N., Bisen, J. P., & Panda, B. B. (2020). Ecoregional rice farming for enhancing productivity, profitability and sustainability (NRRI Research Bulletin No. 22). ICAR–National Rice Research Institute.
Singh, A., Chandra, R., & Bhardwaj, N. R. (2015). Evaluation of fungicides against Rhizoctonia solani, causal agent of sheath blight of rice. International Journal of Applied Pure Science and Agriculture, 1(8), 1–6.
Srinivas, P., Ratan, V., Reddy, P. N., & Madhavi, G. B. (2014). In vitro evaluation of fungicides, biocontrol agents and plant extracts against rice sheath blight pathogen Rhizoctonia solani. International Journal of Applied Biology and Pharmaceutical Technology, 5(1), 121–126.
Subhash, C., Pankaj, K., & Suresh, K. (2016). Field evaluation of fungicides and botanicals against sheath blight of rice (Rhizoctonia solani in Oryza sativa L.). Asian Journal of Soil Science, 11(1), 95–97.
Vincent, J. M. (1947). Distortion of fungal hyphae in the presence of certain inhibitors. Nature, 159, 850.
