International Journal of Plant Protection

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Effect of Bioagents and Chemicals for the Management of Aerial Blight and Dry Root Rot of Blackgram Incited by Rhizoctonia bataticola


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1 Main Agricultural Research Station, University of Agricultural Sciences, Raichur (Karnataka), India
     

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Blackgram (Vigna mungo L.) is an important pulse crop grown throughout India. A new disease of blackgram i.e. aerial blight and dry ischolar_main rot caused by Rhizoctonia bataticola is primarily a soil inhabitant. An attempt was made to manage the disease with biocontrol agents and fungicides. Among the biocontrol agents tested against Rhizoctonia bataticola, Pseudomonas fluorescens (DAPG+ve)-RP46 was found more effective as compared to other bio-control agents and inhibited maximum mycelia growth (68.95%) of R. bataticola followed by T. harzianum (Th-R) (61.85%) and T. viride (Tv-R) (61.11%) under in vitro condition. Fungicides like contact, systemic and combi products were also tested against the aforementioned pathogen. Among five contact fungicides captan, propineb and zineb recorded cent per cent inhibition (100%) of mycelial growth at all the concentrations (i.e., 0.1, 0.2 and 0.3%) among seven systemic fungicides and combi fungicides tested, benomyl, carbendazim, hexaconazole, thiophanate methyl and tridemefon showed 100 per cent mycelia inhibition and also in carbendazim 12% + mancozeb 63%, cymoxanil 8%+ mancozeb 64%, captan70% + hexaconazole 5 %, tricyclozole 18% + mancozeb 62% and mancozeb (64 %) + metalaxyl (4 %) showed cent per cent (100%) inhibition at all the concentrations (0.05, 0.10 and 0.2%), respectively. The maximum vigour index of 2652.83 was recorded in Pseudomonas fluorescens (+DAPG)- RP46 treated blackgram seeds followed by 2042.00 and 1997.80 vigour index in Trichoderma harzianum-II(R) and T. viride- II(R) and poor vigour index of 1258.00 was observed in untreated control.

Keywords

Blackgram, P. fluorescens, Rhizoctonia bataticola, Trichoderma harzianum, T. viride.
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  • Abdul-Baki, A.A. and Anderson, J.D. (1973). Vigour determination in soybean seed by multiple criteria. Crop Sci., 13: 630-633.

  • Anand, M., Naik, M.K., Ramegowda, G. and Devika Rani, G.S. (2009). Biocontorl and PGPR activity of Pseudomonas fluorescens isolates. J. Mycopatholl Res., 48(1): 45-50.

  • International Seed Testing Association (ISTA) (1993). International rules for seed testing. Seed Sci. Tech., 13: 307-350.

  • Jana, T.K., Srivastava, A.K., Csery, K. and Arora, D.K. (2000). Agglutination potential of Pseudomonas fluorescens against black gram and sesame ischolar_main rot disease. J. Biol. Contr., 14(2): 55-61.

  • Konde, S.A., Raut, B.T., Panzade, D.S. and Ingle, S.H. (2008). Management of ischolar_main rot/collar rot disease in soybean. J. Pl. Dis. Sci., 3(1): 81-83.

  • Kumari, R., Shekhawat, K.S., Gupta, R. and Khokhar, M.K. (2012). Integrated management against ischolar_main-rot of mungbean [Vigna radiata (L.) wilczek] incited by Macrophomina phaseolina. J. Plant Pathol. Microb., 3(5): 1-5.

  • Manjunatha, H., Naik, M.K., Patil, M.B., Lokesha, R. and Vasudevan, S.N. (2012). Isolation and characterization of native fluorescent pseudomonads and antagonistic activity against major plant pathogens. Karnataka J. Agric. Sci., 25 (3) : 346-349.

  • Manjunatha, S.V., Naik, M.K., Khan, M.F.R. and Goswami, R.S. (2013). Evaluation of bio-control agents for management of dry ischolar_main rots of chickpea caused by Macrophomina phaseolina. Crop Protect., 45:147-150.

  • Nagamma, G., Saifulla, M. and Narendrappa, T. (2012). In-vitro evaluation of fungicides, bioagents and botanicals against Macrophomina phaseolina (Tassi) Goid the causal agent of dry ischolar_main rot in chickpea. Mysore J. Agric, Sci., 46 (4): 778-783.

  • Naik, M.K., Madhukar, H.M and Devika Rani, G.S. (2009).Evaluation of biocontrol efficacy of Trichoderma isolates and methods of its applications against wilt of chilli caused by Fusarium solani. J. Biol. Control., 23: 31-36.

  • Prabhu, V.H., Adiver, S.S., Ramesh Bhat, Narayana, Y.D., Shamarao, J. and Parameshwarappa, K.G. (2012). Genetic variability in Macrophomina phaseolina (Tassi.) Goid. causal agent of charcoal rot of sorghum. Karnataka J. Agric. Sci., 25 (1): 72-76.

  • Ramamoorthy, V., Raguchander, T. and Samiyappan, R. (2002). Enhancing resistance of tomato and hot pepper to Pythium diseases by seed treatment with fluorescent pseudomonads. European J. Pl. Pathol., 108 : 429-441.

  • Sharvelle, E.G. (1961). The nature and uses of modern fungicides. Burgers Publication Company Minneapolis, Minnesota, USA, p. 308.

  • Shekhar, M. and Kumar, S. (2010). Potential bio-control agents for the management of Macrophomina phaseolina incitant of charcoal rot in maize. Arch. Phytopathol. Plant Protect., 43 : 379-383.

  • Vanithal, S. and Ramjegathesh, R. (2014). Bio control potential of Pseudomonas fluorescens against coleus ischolar_main rot disease. J. Plant Pathol. Microb., 5(01): 01-06.

  • Venuturla Bharathi, Kilaru, K., Madugula, D. and Rani, S. (2014). Potentiality of bioagents on seed quality enhancement in chickpea. Internat. J. Phytopathol., 3 (3): 149-153.

  • Vincent, J.M. (1927). Distoration of fungal hyphae in the presence of certain inhibitors. Nature, 159 : 850.

  • Vinod Kumar, Anuj Kumar and Kharwar, R.N. (2007). Antagonistic potential of Fluorescent Pseudomonads and control of charcoal rot of chickpea caused by Macrophomina phaseolina J. Environ. Biol., 28(1): 15-20.

  • Anonymous (2012). Area, production and productivity of major pulses. http://agropedia.iitk.ac.in.


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  • Effect of Bioagents and Chemicals for the Management of Aerial Blight and Dry Root Rot of Blackgram Incited by Rhizoctonia bataticola

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Authors

G. Sangappa
Main Agricultural Research Station, University of Agricultural Sciences, Raichur (Karnataka), India
S. B. Mallesh
Main Agricultural Research Station, University of Agricultural Sciences, Raichur (Karnataka), India

Abstract


Blackgram (Vigna mungo L.) is an important pulse crop grown throughout India. A new disease of blackgram i.e. aerial blight and dry ischolar_main rot caused by Rhizoctonia bataticola is primarily a soil inhabitant. An attempt was made to manage the disease with biocontrol agents and fungicides. Among the biocontrol agents tested against Rhizoctonia bataticola, Pseudomonas fluorescens (DAPG+ve)-RP46 was found more effective as compared to other bio-control agents and inhibited maximum mycelia growth (68.95%) of R. bataticola followed by T. harzianum (Th-R) (61.85%) and T. viride (Tv-R) (61.11%) under in vitro condition. Fungicides like contact, systemic and combi products were also tested against the aforementioned pathogen. Among five contact fungicides captan, propineb and zineb recorded cent per cent inhibition (100%) of mycelial growth at all the concentrations (i.e., 0.1, 0.2 and 0.3%) among seven systemic fungicides and combi fungicides tested, benomyl, carbendazim, hexaconazole, thiophanate methyl and tridemefon showed 100 per cent mycelia inhibition and also in carbendazim 12% + mancozeb 63%, cymoxanil 8%+ mancozeb 64%, captan70% + hexaconazole 5 %, tricyclozole 18% + mancozeb 62% and mancozeb (64 %) + metalaxyl (4 %) showed cent per cent (100%) inhibition at all the concentrations (0.05, 0.10 and 0.2%), respectively. The maximum vigour index of 2652.83 was recorded in Pseudomonas fluorescens (+DAPG)- RP46 treated blackgram seeds followed by 2042.00 and 1997.80 vigour index in Trichoderma harzianum-II(R) and T. viride- II(R) and poor vigour index of 1258.00 was observed in untreated control.

Keywords


Blackgram, P. fluorescens, Rhizoctonia bataticola, Trichoderma harzianum, T. viride.

References