International Journal of Plant Sciences

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Integrated Management of Bacterial Blight Disease (Oily Spot) of Pomegranate Caused by Xanthomonas axonopodis pv. Punicae


Affiliations
1 Department of Plant Pathology, College of Agriculture, Osmanabad (M.S.), India
2 Directorate of Extension Education, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.), India
3 Department of Horticulture, College of Agriculture, Osmanabad (M.S.), India
     

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A study of efficacy of different antibiotics for management of bacterial blight disease of pomegranate caused by Xanthomonas axonopodis pv. punicae was conducted during the year 2010-12 at College of Agriculture, Osmanabad. In vitro study revealed that antibiotic streptocycline showed maximum inhibition zone of 22.21 and 31.60 per cent at 250 and 500 ppm concentrations against X. axonopodis pv. punicae, followed by tetracycline (18.26 and 27.53 %) and bacterinol (17.40 and 27.15 %) the least inhibition of bacterial growth was observed in cefaclore (13.08 and 17.53 %), respectively. Among seven botanicals neem oil showed maximum inhibition at all concentration (5, 10, 15 and 20 %) followed by garlic, neem leaf extract, tulasi leaf extract, ginger extract, guava leaf extract and aloe vera, respectively. The bacterial antagonistic viz., Pseudomonas fluorescens and Bacillus substilis were found effective in inhibiting the test pathogen at 15.43 and 12.71 per cent, respectively. Based on the efficacy of these different antibiotics, bioagents and plant extracts, the best one were applied in integrated management schedule for mitigating bacterial blight of pomegranate. The schedule was applied at five different locations in Marathwada region of Maharashtra. At the time of adoption of orchards, the per cent disease severity observed in the orchard at Kelewadi, Wagholi, Sakanewadi, Hol and Killari were 16.44, 16.56, 17.85, 11.50 and 26.32 which was reduced to 3.5, 8.23, 8.14 and 9.53 and 9.04, respectively at harvest.

Keywords

Xanthomonas axonopodis pv. Punicae, Antibiotics, Integrated Management, Bacterial Blight.
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  • Integrated Management of Bacterial Blight Disease (Oily Spot) of Pomegranate Caused by Xanthomonas axonopodis pv. Punicae

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Authors

C. V. Ambadkar
Department of Plant Pathology, College of Agriculture, Osmanabad (M.S.), India
A. S. Dhawan
Directorate of Extension Education, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.), India
V. N. Shinde
Department of Horticulture, College of Agriculture, Osmanabad (M.S.), India

Abstract


A study of efficacy of different antibiotics for management of bacterial blight disease of pomegranate caused by Xanthomonas axonopodis pv. punicae was conducted during the year 2010-12 at College of Agriculture, Osmanabad. In vitro study revealed that antibiotic streptocycline showed maximum inhibition zone of 22.21 and 31.60 per cent at 250 and 500 ppm concentrations against X. axonopodis pv. punicae, followed by tetracycline (18.26 and 27.53 %) and bacterinol (17.40 and 27.15 %) the least inhibition of bacterial growth was observed in cefaclore (13.08 and 17.53 %), respectively. Among seven botanicals neem oil showed maximum inhibition at all concentration (5, 10, 15 and 20 %) followed by garlic, neem leaf extract, tulasi leaf extract, ginger extract, guava leaf extract and aloe vera, respectively. The bacterial antagonistic viz., Pseudomonas fluorescens and Bacillus substilis were found effective in inhibiting the test pathogen at 15.43 and 12.71 per cent, respectively. Based on the efficacy of these different antibiotics, bioagents and plant extracts, the best one were applied in integrated management schedule for mitigating bacterial blight of pomegranate. The schedule was applied at five different locations in Marathwada region of Maharashtra. At the time of adoption of orchards, the per cent disease severity observed in the orchard at Kelewadi, Wagholi, Sakanewadi, Hol and Killari were 16.44, 16.56, 17.85, 11.50 and 26.32 which was reduced to 3.5, 8.23, 8.14 and 9.53 and 9.04, respectively at harvest.

Keywords


Xanthomonas axonopodis pv. Punicae, Antibiotics, Integrated Management, Bacterial Blight.

References