International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:9, September, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(9): 2319-2328

Native Trichoderma for the Management of Wire Stem of mustard (Brassica spp) Caused by Rhizoctonia solani
R.K. Nirupama Devi, Bireswar Sinha* and Ph. Sobita Devi
Department of Plant Pathology, College of agriculture, CAU, Imphal, Manipur, India
*Corresponding author

In vitro study on the effect of four Trichoderma isolates on the mycelial growth of Rhizoctonia solani showed maximum inhibition of 74.54 per cent and least inhibition of 52.50 per cent. Effects of volatile compound produced by Trichoderma spp. against R. solani were ranged from 15.50 to 26.70 per cent. Non-volatile compound produced by Trichoderma spp showed inhibition of 7.45 to 31.11 per cent at 7.5 % v/v concentrations and 14.50 to 33.55 per cent at 15 % v/v. Experiment on competitive parasitic ability of four Trichoderma isolates in the colonization of sclerotia under three different soil conditions viz., unsterilized, sundried and sterilized soil showed highest colonization of isolates CAUNCIPM-116, CAUNCIPM-97A, CAUNCIPM-11 and CAUNCIPM-50 (100 per cent) sterilized soil. Bio priming of mustard seeds by Trichoderma isolates showed highest shoot length of 4.90 cm by Trichoderma isolate CAUNCIPM-97A and highest root length of 1.47cm in isolate CAUNCIPM-11. Highest vigour index was observed in isolate CAUNCIPM-97A treated seed. Fungal microbial population from the rhizosphere of mustard was taken at 15 days and 30 days after sowing and highest number of fungal population was observed in seed + soil treated with isolate CAUNCIPM-97A and CAUNCIPM-116 respectively. In vivo efficacy of four isolates viz., CAUNCIPM-116, CAUNCIPM-97A, CAUNCIPM-11 and CAUNCIPM-50 of Trichoderma against R. solani Kuhn. showed significant reduction in disease incidences under pot condition and beside chemical (Blitox) treated pot, combination of seed and soil treatment with Trichoderma isolates showed highest plant growth characters pot such as germination percentage, plant height, plant canopy, fresh weight and dry weight than seed and soil alone.

Keywords: Mustard, Trichoderma, Bio-priming.

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Nirupama Devi, R.K., Bireswar Sinha and Sobita Devi Ph. 2017. Native Trichoderma for the Management of Wire Stem of Mustard (Brassica spp) Caused by Rhizoctonia solaniInt.J.Curr.Microbiol.App.Sci. 6(9): 2319-2328. doi:
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