Articles
FIELD PERFORMANCE OF BACTERICIDES, BIO-AGENTS AND BOTANICALS AGAINST BACTERIAL BLIGHT OF POMEGRANATE
Article number
890_74
Pages
529 – 531
Language
English
Abstract
Bacterial blight of pomegranate caused by Xanthomonas axonopodis pv. punicae is a serious threat for production in all the pomegranate growing regions of northern Karnataka.
Efforts were made to screen the commercially available bactericides, bio-agents and botanicals for their efficacy against the disease.
Trials were conducted for two years during 2002-2003 and 2003-2004 in a farmers field at Sanjeevarayanakote village of Bellary taluk.
The experiment was set up in randomized block design with three replications.
There were eight treatments comprising bactericides, bio-gents and botanicals.
Bactericides were sprayed in combination with copper oxychloride.
A total of five sprays were given at an interval of 15 days with first spray at the disease onset.
Studies on performance of different treatments over two years experimentation revealed a lowest disease index of 22.3% in streptocycline (0.05%) + copper oxychloride (0.2%) treated plots followed by bacterinol 100 (0.05%) + copper oxychloride (0.2%) and bacteriomycin (0.05%) + copper oxychloride (0.2%), which recorded 27.2% disease index.
All these three bactericides exhibited efficacy on par with each other and significantly superior efficacy over Pseudomonas fluorescens at 0.5% (bioagent) and garlic extract at 2% (botanical). The highest disease severity of 63.1% was recorded in the untreated check plot.
Efforts were made to screen the commercially available bactericides, bio-agents and botanicals for their efficacy against the disease.
Trials were conducted for two years during 2002-2003 and 2003-2004 in a farmers field at Sanjeevarayanakote village of Bellary taluk.
The experiment was set up in randomized block design with three replications.
There were eight treatments comprising bactericides, bio-gents and botanicals.
Bactericides were sprayed in combination with copper oxychloride.
A total of five sprays were given at an interval of 15 days with first spray at the disease onset.
Studies on performance of different treatments over two years experimentation revealed a lowest disease index of 22.3% in streptocycline (0.05%) + copper oxychloride (0.2%) treated plots followed by bacterinol 100 (0.05%) + copper oxychloride (0.2%) and bacteriomycin (0.05%) + copper oxychloride (0.2%), which recorded 27.2% disease index.
All these three bactericides exhibited efficacy on par with each other and significantly superior efficacy over Pseudomonas fluorescens at 0.5% (bioagent) and garlic extract at 2% (botanical). The highest disease severity of 63.1% was recorded in the untreated check plot.
Publication
Authors
S.T. Yenjerappa, C.M. Rafee, V.B. Nargund
Keywords
Punica granatum, Xanthomonas axonopodis pv. punicae, control
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