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Asian Journal of Plant Sciences
Year: 2003  |  Volume: 2  |  Issue: 7  |  Page No.: 539 - 543

Effect of Chemicals in Controlling Bacterial Blight of Cotton

Md. Zohurul Islam, K.M. Khalequzzaman, G.M.M. Rahman, M. Tahasinul Islam and Md. Mosharraf Hossain    

Abstract: A field experiment with 10 treatments was conducted to evaluate the comparative efficacy of five chemicals viz., Streptomycin sulphate, Thiovit 80 WP, Sulfuric acid, Dithane M-45 and Cupravit either alone or in combination in controlling bacterial blight and on yield of cotton. Germination was highest in T10 i.e. Seed treatment with Streptomycin sulphate (0.15%) and foliar spray with Cupravit (0.2%) + Streptomycin sulphate (150 ppm) having 86.31 %. The lowest disease index (21.24%) was found in T10 subsequently after three foliar sprays at 104 DAS. This treatment reduced the disease intensity and increased the yield of seed cotton with 26.02%. The treatment T9 (Foliar spray with Cupravit + Streptomycin sulphate) also resulted better performance in reducing disease intensity and increased yield of seed cotton by 22.81%.

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