National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Rice is one of the major grains of the India and also significant part of national economy. Its production is severely affected by various biotic and abiotic stresses. Among different fungal disease stem rot of rice caused by Scleoritina oryzae leads to great losses. Under adverse conditions sclerotia are formed and act as main source of primary inoculum till the other collateral or/and alternate hosts appearance in the vicinity. Thus the present study is to know the best conditions that favour the sclerotial infection after the perpetuation. We took a highly susceptible variety and inoculated the sclerotia in three different ways: first, one sclerotium per sheath with transparent tape piece. Second, the sclerotia near to the pseudostem and both were maintained with the field capacity condition. Third, the sclerotia were dispersed in the planted trays and maintained inundated condition till the experimental period. Observations were recorded after 10, 15 and 21 days after inoculation. We also evaluated the effect of medicinal plants leaf extract on mycelia growth and sclerotial production of S.oryzae. We observed that the, rice plant directly inoculated with sclerotia and sclerotia lying very adjacent to stem was found to be most favourable for infection moreover botanicals extracts of Karanj and Madar were highly effective in inhibiting the growth and sclerotial formation.
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