International Journal of Plant Protection

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Evaluation of Fungicides, Botanicals and Bio-Agents against Sheath Blight of Rice Caused by Rhizoctonia solani Kuhn under Irrigated Eco-System


Affiliations
1 Department of Plant Pathology, AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), India
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
     

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The study was conducted to know the field efficacy of different fungicides, botanicals and bio-agents against sheath blight of rice under irrigated eco-system. Among the different treatments, the least per cent disease index (17.00 PDI) was recorded in Hexaconazole (Contaf 5 EC) with the highest grain yield (81.02 q/ha). This was followed by Validamycin 3L (21.60 PDI and grain yield 73.83 q/ha) and Carbendazim 50 WP (24.80 PDI and grain yield 69.21 q/ha). Among the botanicals and bio-agents, the least disease incidence was noticed in Tricure (Azadirachtin @ 0.03%) with 30.50 PDI and grain yield of 61.43 q per ha and P. fluorescens (Pfr-l) with 36.20 PDI with a grain yield of 54.02 q per ha. The C:B ratio was high in Hexaconazole (1:2.5) followed by Propiconazole (1:2.3).

Keywords

Sheath Blight, Rice, Rhizoctonia solani, Hexaconazole, Botanicals, Bio-Agents.
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  • Evaluation of Fungicides, Botanicals and Bio-Agents against Sheath Blight of Rice Caused by Rhizoctonia solani Kuhn under Irrigated Eco-System

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Authors

P. Nagaraju
Department of Plant Pathology, AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), India
M. K. Naik
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India

Abstract


The study was conducted to know the field efficacy of different fungicides, botanicals and bio-agents against sheath blight of rice under irrigated eco-system. Among the different treatments, the least per cent disease index (17.00 PDI) was recorded in Hexaconazole (Contaf 5 EC) with the highest grain yield (81.02 q/ha). This was followed by Validamycin 3L (21.60 PDI and grain yield 73.83 q/ha) and Carbendazim 50 WP (24.80 PDI and grain yield 69.21 q/ha). Among the botanicals and bio-agents, the least disease incidence was noticed in Tricure (Azadirachtin @ 0.03%) with 30.50 PDI and grain yield of 61.43 q per ha and P. fluorescens (Pfr-l) with 36.20 PDI with a grain yield of 54.02 q per ha. The C:B ratio was high in Hexaconazole (1:2.5) followed by Propiconazole (1:2.3).

Keywords


Sheath Blight, Rice, Rhizoctonia solani, Hexaconazole, Botanicals, Bio-Agents.

References