Study on Efficacy of Pyraclostrobin 10% + Thifluzamide 10% SC against Blast and Sheath Blight Diseases of Paddy Crop

S. B. Gowdar *

College of Agriculture, Gangavathi, Koppal-583227 (Karnataka), India.

Sujay Hurali

Agricultural Research Station, Gangavathi, Koppal-583227 (Karnataka), India.

Narappa G.

Krishi Vigyan Kendra, Gangavathi, Koppal-583227 (Karnataka), University of Agricultural Sciences, Raichur, India.

Gurunath Raddy

College of Agriculture, Gangavathi, Koppal-583227 (Karnataka), India.

*Author to whom correspondence should be addressed.


Abstract

Rice diseases are considered the main constraint in rice production and cause both qualitative and quantitative losses. Blast and sheath blight diseases are major constrain of rice production reported to cause extensive damage in crop production. The following experiment was conducted to know the efficacy of Pyraclostrobin 10% + Thifluzamide 10% SC in different doses against blast (Pyricularia oryzae) and sheath blight (Rhizoctonia solani) of paddy crop with 7 treatments and replicated three times in RBD design at ARS, Gangavati during Kharif 2021-22 and Kharif 2022-23 cropping season. In kharif 2021, at 10 days after second spray, the leaf blast of 17.10 and 18.45 PDI was recorded with Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha and Pyraclostrobin 10% + Thifluzamide 10% SC @ 80+80 g a.i./ha respectively. During summer 2022, at 10 days after second spray, Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha recorded the lowest PDI of 12.75 and untreated control recorded the highest PDI (43.50%). In kharif 2021, at 10 days after second spray, Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha and Pyraclostrobin 10% + Thifluzamide 10% SC @ 80+80 g a.i./ha were effective in reducing the panicle blast with minimum PDI of 3.00 and 3.50, respectively. Whereas, the maximum PDI of 23.50 was observed in untreated control. In summer 2022, lowest per cent panicle blast was recorded in Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha (1.50 PDI) and Pyraclostrobin 10% + Thifluzamide 10% SC @ 80+80 g a.i./ha (2.00 PDI). In kharif 2021, at 10 days after second spray, Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha and 80+80 g a.i./ha recorded lowest sheath blight PDI of 17.95 and 19.75, respectively. Similarly, during summer 2022, at 10 days after second spray lowest sheath blight of 11.75 PDI was recorded from Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha. During kharif 2022, Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha and Pyraclostrobin 10% + Thifluzamide 10% SC @ 80+80 g a.i./ha were recorded highest yield of 55.62 and 53.25 q/ha respectively as against 38.84 q/ha in untreated control. During summer 2022, Pyraclostrobin 10% + Thifluzamide 10% SC @ 90+90 g a.i./ha and Pyraclostrobin 10% + Thifluzamide 10% SC @ 80+80 g a.i./ha recorded highest yield of 58.20 q/ha and 57.50 q/ha respectively as against 40.40 q/ha in untreated control.

Keywords: Blast, Paddy, Pyraclostrobin 10% Thifluzamide 10% SC and sheath blight


How to Cite

Gowdar , S. B., Hurali , S., Narappa G., & Raddy , G. (2024). Study on Efficacy of Pyraclostrobin 10% + Thifluzamide 10% SC against Blast and Sheath Blight Diseases of Paddy Crop. International Journal of Environment and Climate Change, 14(2), 525–536. https://doi.org/10.9734/ijecc/2024/v14i23966

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