National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Onion (Allium cepa L.) is one of the most important commercial vegetable crop grown in India. In Karnataka, Northeastern Dry Zone is the potential area for the production of onion. The major constraints in the production of onion are diseases caused by fungi. The present investigation was undertaken to know the disease severity in Northern parts of Karnataka. A roving survey was conducted to know the percent disease severity (PDI) of purple blotch, stemphylium blight and basal rot of onion in districts of Northern parts of Karnataka during kharif 2014-15. The survey was carried out from onion growing districts viz, Dharwad, Gadag, Haveri, Uttar Kannada and Belagavi. The overall disease severity of purple blotch ranged from 32.31 % to 52.58 %, stemphylium blight ranged from 21.24 to 54.35 % and basal rot ranged from 7.78 to 12.54 %. The higher severity of purple blotch was noticed in the fields of Savadatti taluk of Belagavi district. The lowest was noticed in Kundagol taluk Dharwad (32.31%). Similarly, stemphylium blight severity percentage found higher in same Savadatti taluk of Belagavi district and lower percentage found in Gadag taluk (21.24%). Density severity percentage of rot noticed higher in Savadatti taluk (12.54 %) of Belagavi district and the least % noticed in Kumata taluk of Uttara Kannada district (7.78 %).
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