International Journal of Plant Sciences

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Chemical Management of Alternaria Leaf Blight of Bt Cotton


Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, Dharwad (Karnataka), India
     

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Field experiment was conducted during Kharif 2006-07 and 2007-08 at Agricultural Research Station, Dharwad Farm for evaluation of different fungicides against Alternaria leaf blight of cotton. Fungicides viz., Hexaconazole (0.1%), Tebuconazole (0.1%), Propiconazole (0.1%), Difenconazole (0.1%), Penconazole (0.1%), Propineb (0.2%), Chlorothalonil (0.2%), Carbendazim (0.1%), Mancozeb (0.2%) were sprayed after initiation of disease infection, three sprays were taken with 20 days interval and per cent disease index (PDI) was calculated after final spray. Propineb (0.2%) was effective in controlling disease with per cent disease control of 76.09 followed by Difenconazole @ 0.1% with 66.96 control.

Keywords

Alternaria Blight, Cotton, Management, Foliar Spray.
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  • Chemical Management of Alternaria Leaf Blight of Bt Cotton

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Authors

G. H. Anil
Department of Plant Pathology, University of Agricultural Sciences, Dharwad (Karnataka), India
S. A. Ashtaputre
Department of Plant Pathology, University of Agricultural Sciences, Dharwad (Karnataka), India
M. S. L. Rao
Department of Plant Pathology, University of Agricultural Sciences, Dharwad (Karnataka), India

Abstract


Field experiment was conducted during Kharif 2006-07 and 2007-08 at Agricultural Research Station, Dharwad Farm for evaluation of different fungicides against Alternaria leaf blight of cotton. Fungicides viz., Hexaconazole (0.1%), Tebuconazole (0.1%), Propiconazole (0.1%), Difenconazole (0.1%), Penconazole (0.1%), Propineb (0.2%), Chlorothalonil (0.2%), Carbendazim (0.1%), Mancozeb (0.2%) were sprayed after initiation of disease infection, three sprays were taken with 20 days interval and per cent disease index (PDI) was calculated after final spray. Propineb (0.2%) was effective in controlling disease with per cent disease control of 76.09 followed by Difenconazole @ 0.1% with 66.96 control.

Keywords


Alternaria Blight, Cotton, Management, Foliar Spray.

References