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 |
Bacterial diseases of plants are highly catastrophic and management is difficult. Using of chemicals are hazardous. Hence, an alternate method of control needs to be developed which is effective, cheap and eco-friendly. The water extract from the two botanicals viz., Ocimum gratissimum and Tylophora asthmatica were effective in inhibiting the growth of Ralstonia solanacearum, Xanthomonas axonopodis pv. vignicola and X. campestris pv. Campestris upto 1:1 dilution. At 1:10 dilution water extract of O. gratissimum produced inhibition zones of 22.66, 21.66 and 22.33mm against R. solanacearum, X. axonopodis pv. Vignicola and X. campestris pv. campestris respectively. Of the three bacteria tested, R. solanacearum was found to be more sensitive to O. gratissimum followed by X. campestris pv. campestris whereas, in cases of T. asthmatica, X. campestris pv. campestris was more sensitive followed by X. axonopodis pv. vignicola and R. solanacearum. Alcohol extract of O. gratissimum was effective against all the three bacteria tested upto 1:100 dilution, whereas, O. sanctum and T. asthmatica were effective upto 1:10 dilution. Ruta graveolens was effective upto 1:1 dilution against the three bacteria. In majority of cases X. campestris pv. campestris was most sensitive to the alcohol extracts followed by X. axonopodis pv. vignicola and R. solanacearum indicating that with the dilution of extract the inhibitory activity was lost.
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