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- Title
Biological Management of Rice Sheath Blight caused by Rhizoctonia solani Kuhn. under In-vivo Condition.
- Authors
KUMAR, N. KIRAN; NARENDRAPPA, T.; KUMAR, V. B. SANATH; KUMAR, M. K. PRASANNA; KUMAR, L. VIJAY
- Abstract
Sheath blight caused by Rhizoctonia solani is one of the most destructive diseases in rice contributing to significant yield loss. Bioagents and bio-fumigants and their combination were evaluated for their effect on disease severity of rice sheath blight during kharif and rabi seasons of 2017 under in-vivo conditions. During kharif 2017, foliar application of propiconazole 25 per cent EC @ 0.1 per cent at 30 days after transplanting (DAT) and 60 DAT was found to be most effective (3.70 and 92.6 %) followed by soil application of mustard leaf @ 5 g/100 g soil before transplanting and foliar application of Pseudomonas fluorescens @ 5 g/L at 30 DAT (6.48 and 87.04 %) and least effective treatment was foliar application of Trichoderma viride @ 5 g/L at 30 DAT (41.66 and 16.68 %) on the basis of mean disease severity and per cent reduction over control. The same trend was noticed during rabi 2017. The foliar application of propiconazole 25 per cent EC @ 0.1 per cent at 30 DAT and 60 DAT recorded the lowest per cent of chaffiness and highest per cent decrease over control (7.33 and 80.7 per cent) whereas, the highest per cent of chaffiness and lowest per cent decrease over control was observed in foliar application of T. viride @ 5 g/L at 30 DAT (34 and 10.5 per cent). The highest average grain yield per plant and average per cent increase over control was recorded in foliar application of propiconazole 25 per cent EC @ 0.1 per cent at 30 DAT and 60 DAT (13.4g and 94.2%).
- Subjects
RICE sheath blight; RHIZOCTONIA diseases; PSEUDOMONAS fluorescens; CELLULOLYTIC bacteria; AGRICULTURAL productivity
- Publication
Mysore Journal of Agricultural Sciences, 2021, Vol 55, Issue 3, p215
- ISSN
0047-8539
- Publication type
Article