Journal of Pure and Applied MicrobiologyVol. 9 No. 4

Bacterial Blight of Pomegranate : A Menace in Quality Fruit Production

J. Raju1, V. I. Benagi2, K. Jayalakshmi1, V. B. Nargund2, Jones Nirmalanath3, S. Priti4, S. T. Naik2 and Madhu S. Giri2

1Department of Plant Pathology, University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka 577201, India. 2Department of Plant Pathology, University of Agricultural Sciences, Dharwad, Karnataka 580 005, India. 3Department of Agricultural Microbiology, University of Agricultural Sciences, Dharwad, Karnataka 580 005, India. 4Department of Plant Pathology, Central horticultural experiment Station, Indian Institute of Horticulture Research, Chettalli, Kodagu, Karnataka 571248, India.

Received on 29 July 2015 and accepted on 14 October 2015

 

ABSTRACT

Pomegrante (PunicagranatumL.), so called “fruit of paradise” is one of the major fruit crops of arid region. It is mainly grown in states of Maharashtra, Karnataka, Andhra Pradesh and Tamil Nadu. Bacterial blight of pomegranate, caused by Xanthomonasaxonopodispv. punicae, considered to be a minor disease, was reported as bacterial leaf spot in the 1950s. At present this disease is observed on leaf, stem and on fruits and has been responsible for the removing of many orchards in south India. Recently this disease was also observed in Rajasthan. A survey was conducted in North Karnataka during 2008-10. The disease was very severe in Mrigbahar. Demonstration was conducted in farmer field involving various components like selection of Ambiabahar treatment, use of antibiotics along with copper compounds and Bioagents. The results indicated that before adopting the orchard integrated control management measures, the observed severity on the trees was up to 69%, and it was brought down to 10.15% in orchards where measures were adopted over three years. The average yield levels were 5.27 tons/hectare in demonstration plots. In orchard with control, the disease severity on trees was up to 38.51% with average yield levels of 2.07 tons per hectare. Hence yield increased 6.12 tons, which worth Rs. 5.81 lakhs, when compared to untreated control.

Keywords : Pomegranate, Xanthomonasaxonopodis, Integrated disease management.