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 |
Studies were conducted in the Department of Plant Pathology, Odisha University of Agriculture and Technology, Bhubaneswar following inhibition zone technique to test the bio-efficacy of plant extracts in vitro against Pectobacterium carotovorum causing pre-emergence and post–emergence rotting, black leg in field soft rot in storage in potato. The seeds of locally grown trees, spices and weeds are used in the tests. These were Terminalia chhebula (Chhebulic myrobalan),T. belerica (Beleric myrobalan), Emblica officinalis (Indian goose berry), (Azadirachata indica (Neem), (Greater cardamom), Rauvolfia serpentina (Snake root), Coriandrum sativum (Dhania), Cuminum cyminum (Cumin), Nigella sativa (Black cumin), Foeniculum vulgare (Fennel), Piper nigrum (Black pepper), Cassia fistula (Indian laburn), Cassia tora (Senna tora). It was observed that R.serpentina exhibited maximum size of inhibition zone .13.53 followed by A.subulatum (11.33) against the test bacterial species. The inhibition zone was found to be10.0mm in seed extracts of T.chebula and dried flower extracts of Syzygium caryophyllus while 9.30mm in F.vulgare, 8.68 in C.cyminum and 8.03mm in N.sativa. There was no statistically significant difference in inhibiting activity between A. aromaticum (7.97mm) and A.indica (7.92mm). The inhibition was same (7.01mm) in both T.bellirica and C.viscosa. In P.nigrum, C.fistula and C.tora also expressed same inhibiting activity (6.95mm). Minimum inhibition zone was observed in E.officinallis (6.68mm).
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