International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 3
First page : (259) Last page : (263)
Article doi: http://dx.doi.org/10.18782/2320-7051.3080
In vitro and In vivo Evaluation of Fungicides Against Pyricularia oryzae Causing Blast of Rice
Neelakanth1*, Sidde Gowda D. K.1, Chethana B. S.2 and Parasappa H. H.3
1Department of Agricultural Entomology, College of Agriculture V.C. Farm, Mandya, U.A.S. Bengaluru, Karnataka, India
2Rice Pathologist, ZARS, V.C. Farm, Mandya, U.A.S. Bengaluru, Karnataka, India
3Department of Agricultural Entomology, College of Agriculture UAS, Bengaluru, Karnataka, India
*Corresponding Author E-mail: bmneelakanth@gmail.com
Received: 3.06.2017 | Revised: 12.06.2017 | Accepted: 14.06.2017
ABSTRACT
Rice blast caused by Pyricularia oryzae is an economically important disease posing a huge threat to rice cultivation. So, in order to assess the efficacy of fungicides against P. oryzae in vitro and in vivo studies were conducted. Among the in vitro studies of fungicides, all the concentrations of carbendazim, tricyclazole and trifloxystrobulin + tebuconazole were found to be effective against P. oryzae showing cent per cent inhibition of mycelial growth followed by kresoxim methyl at 250 ppm, 500 ppm, 1000 ppm and 1500 ppm which inhibited 84.30, 84.11, 84.30 and 84.50 per cent respectively, followed by azoxystrobin at 250 ppm, 500 ppm, 1000 ppm and 1500 ppm which inhibited 82.17, 83.33, 83.33 and 83.72 per cent, respectively and in field condition among four fungicides tested, lowest per cent of blast was observed in tricyclazole treated plot (11.87 %) followed by carbendazim (11.94 %) azoxystrobin (17.29 %), kresoxim methyl (17.89 %) as compared to control which recorded higher disease severity (32.96 %) at recommended concentration of fungicide usage.
Key words: Fungicides, Rice blast, Pyricularia oryzae
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Neelakanth, Sidde Gowda, D.K., Chethana, B.S. and Parasappa, H.H., In vitro and In vivo Evaluation of Fungicides Against Pyricularia oryzae Causing Blast of Rice, Int. J. Pure App. Biosci.5(3): 259-263 (2017). doi: http://dx.doi.org/10.18782/2320-7051.3080
