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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 4
First page : (651) Last page : (655)
Article doi: : http://dx.doi.org/10.18782/2320-6648

A New Combination Fungicide for the Management of Sheath Blight and Neck Blast Diseases of Paddy

B. S. Chethana*

Rice Pathologist (AICRP on Rice), Zonal Agricultural Research Station, VC Farm, Mandya-571405
University of Agricultural Sciences Bengaluru, Karnataka, India
*Corresponding Author E-mail: chethanabs.pathology@gmail.com
Received: 22.06.2018  |  Revised: 27.07.2018   |  Accepted: 5.08.2018

 ABSTRACT

Sheath blight and neck blast are the most important diseases affecting rice production in India. In recent years, resistance development in pathogens a new constraint has emerged due to repeated fungicide usage with single mode of action. The farmers are demanding for crop protection products of lower dosage and less toxic with nonthreatening environmental profile. In this context an attempt was made to search a new molecule of fungicide with novel and broad spectrum modes of action. In the present study various fungicides were screened against sheath blight and neck blast of rice.  Among the fungicides evaluated tricyclazole 45% + hexaconazole 10% WG @1g/l was significantly effective in reducing the disease severity of sheath blight and neck blast with PDI of 10.36 and 9.78 and an  yield of 5954 kg/ha as against a PDI of 65.18 and 61.06 and yield of 3061 kg/ha in untreated control. Tricyclazole 45% + hexaconazole 10% WG at higher concentration did not show any symptoms of phyto-toxicity till 15 days after application.

Key words: Tricyclazole, Phyto-toxicity, Paddy, Fungicide

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Chethana, B.S., A New Combination Fungicide for the Management of Sheath Blight and Neck Blast Diseases of Paddy, Int. J. Pure App. Biosci.6(4): 651-655 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6648