Journal of Pure and Applied MicrobiologyVol. 11 No. 1

In-vitro Evaluation of Different Chemicals, Bioagents and Botanicals against Xanthomonas citri subsp citri

Chethankumar K.1, Kirankumar K.C.1, H.B. Patil2, Sadanand K. Mushrif3 and Babu A.G.4

1Department of Plant Pathology (University of Horticultural Sciences), Bagalkot, Karnataka, India. 2Department of Vegetable Science (University of Horticultural Sciences), Bagalkot, India. 3 Department of Plant Pathology (University of Horticultural Sciences), Kolar, India. 4Department of Crop physiology (University of Horticultural Sciences), Bagalkot, Karnataka, India.

Received on 13 December 2016 and accepted on 27 January 2017

 

ABSTRACT

Citrus canker caused by Xanthomonas citri subsp citri is one of the important disease in kagzi lime affecting the quality and market value of the fruits. The inhibitory activity of chemicals, bioagents and botanicals were evaluated against Xanthomonas citri subsp citri under in-vitro condition. Among the bactericides and fungicides tested 2-bromo- 2-nitropropane-1, 3-diol and copper hydroxide showed maximum inhibition of 16.39mm and 15.77mm respectively. However, the bioagents VK-6B and KK-3A recorded >90% inhibition among the thirteen bioagents evaluated. Similarly 21 different botanical were evaluated for their inhibition efficacy which revealed that Prosopis juliflora extract showed highest average inhibition of 10.83mm and 15.21mm in aqueous and alcoholic extracts respectively.

Keywords : Chemicals, Bioagents, Citrus canker, Botanical, Xantomonas citri.