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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (1341) Last page : (1347)
Article doi: http://dx.doi.org/10.18782/2320-7051.5811

In vitro Efficacy of Fungicides and Bioagents Against Dry Root Rot of Pigeonpea Caused by Rhizoctonia bataticola (Taub.) Butler

Maruti1*, Savitha, A. S.1, Gururaj Sunkad1 and Amaresh Y. S.1
1Department of Plant Pathology, College of Agriculture, UAS, Raichur-584104, Karnataka, India
*Corresponding Author E-mail: msbaganal143@gmail.com
Received: 29.09.2017  |  Revised: 27.10.2017   |  Accepted: 4.11.2017  


Pigeonpea [Cajanus cajan (L.) Millsp.] Is one of the protein rich legume of the semi-arid tropics grown predominantly under rainfed condition. It is affected by several fungal diseases among them the dry root rot caused by Rhizoctonia bataticola which cause severe economic yield loss. An attempt was made to manage the disease with fungicides and bio control agents. In vitro efficacy of non systemic, systemic and combi fungicides are evaluated against R. bataticola. Among contact fungicides tested, ziram recorded 100 per cent inhibition at all the concentrations (i.e., 0.1, 0.2 and 0.3 %) with the mean inhibition, which was significantly superior over all the treatments whereas, mancozeb and thiram showed 100 per cent inhibition at 0.3 per cent concentration.Among systemic fungicides tested, tebuconazole showed complete inhibition at all the concentration (i.e., 0.05, 0.10 and 0.15), whereas, propiconazoleshowed 100 per cent inhibition of R. bataticola at 0.10 and 0.15 per cent concentration. Among combi products tested, carbendazim 12% + mancozeb 63% WP, trifloxystrobin 25% + tebuconazole 50% EC and carboxin 37.5% + thiram 37.5% WP showed cent per cent (100%) inhibition at all the concentrations (i.e.,0.10%, 0.20% and 0.30 %). Where as the bio-agents tested, Trichoderma viride (Tv-B) was found more effective and statistically significant over other bio-control agents in inhibiting the mycelial growth (77.20 %) of R. bataticola followed by Trichoderma virense (Tvn-B) (75.76 %) and rest of other treatments.

Key words: Pigeonpea, Dry root rot, Rhizoctonia bataticola, Fungicides

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

Cite this article: Maruti, Savitha, A.S., Sunkad, G. and Amaresh, Y.S., In Vitro Efficacy of Fungicides and Bioagents against Dry Root Rot of Pigeonpea Caused by Rhizoctonia bataticola (Taub.) Butler, Int. J. Pure App. Biosci.5(6): 1341-1347 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5811