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ORYZA- An International Journal on Rice
Year : 2012, Volume : 49, Issue : 1
First page : ( 68) Last page : ( 69)
Print ISSN : 0474-7615. Online ISSN : 2249-5266.

Bio-control of rice sheath blight through antagonists

Lenka S.1, Mishra S.K.2, Mohanty S.K.3, Das K.M.3, Medhi B.1

1Regional Rainfed Lowland Rice Research Station, Gerua, Assam

2College of Agriculture, OUAT, Bhubaneswar

3Central Rice Research Institute, Cuttack, Odisha

Online published on 29 June, 2013.

Abstract

In vitro assessment of four biocontrol agents revealed promising effect of Trichoderma viride (Bangalore isolate) followed by T harzianum (Bangalore isolate) and T harzianum (Bhubaneswar isolate) in inhibiting the mycelial growth and sclerotial production of S8 isolate of Rhizoctonia solani. In pot culture experiment on rice variety Tapaswini the bioefficacy of T viride (Bangalore isolate) was observed to be significantly higher followed by Gliocladium virens (Bhubaneswar isolate). Among the biogents, Bangalore isolate of T viride was found very effective in restricting the growth and sclerotia production of R.solani by 67.94% and 68.62%, respectively as compared to that of the control

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Keywords

rice, sheath blight, bio-control, Trichoderma.

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