Antibacterial activity of commercially available chemicals against Xanthomonas axonopodis pv. punicae causing Bacterial blight of pomegranate under in vivo conditions
Paper Details
Antibacterial activity of commercially available chemicals against Xanthomonas axonopodis pv. punicae causing Bacterial blight of pomegranate under in vivo conditions
Abstract
Xanthomonas axonopodis pv. punicae, causal agent of bacterial blight disease; has severely affected the pomegranate cultivation in many parts of Punjab, Pakistan. Extensive agricultural practices along with large amount of bactericides are required to control this disease. A field trail was conducted at orchards of Horticulture Research Institute, Faisalabad to study the in vivo efficacy of 5 chemicals in combination with cultural practices against the pathogen. Six treatments consisting of chemicals viz., Streptomycin sulphate, Bismerthiazol, Copper hydroxide, Copper oxychloride and Bordeaux mixture were sprayed with four replications and control plants were untreated. All the tested chemicals were found significantly effective (P < 0.05) compared to the control treatment in managing the disease. However, Streptomycin sulphate was proved to be most effective in reducing the disease incidence with least number of infected leaves (5.3%), lowest number of twigs infected (1.83%) and minimum fruit infection (12%).While disease reduction over control was calculated as 87, 85 and 88% in leaves, twigs and fruits respectively on application of streptomycin sulphate.
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