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 |
Rice is an important food crop in India. One of the major constraints of rice production is that it is prone to several diseases. Among them brown leaf spot disease has been reported to occur in all rice growing regions. A study was conducted to determine the performance of fifty paddy varieties against the disease at college of agriculture, V.C. Farm, Mandya, during kharif 2015. The per cent disease severity was recorded at 30, 60 and 90 days after transplanting (DAT). It was observed that, the disease severity increased with increase in age of the crop from 30-90 DAT. However, there was no disease at 30 DAT in any of the genotypes. At 60 DAT the average disease severity ranged from 0.0 to 13.55%, whereas at 90 DAT it ranged from 0.0 to 21.20%. A moderately resistant reaction to the disease was noticed in 31 genotypes. Further, 11 genotypes viz., Rasi, JGL-1798, BR-2655, Raksha, KMP-201, BI-33, Sagbatta, Honnekattu, Klame, Kavekantak and Togarshi were identified as the resistant sources against the disease as they were free from the disease throughout the cropping period, which could be used by the breeders to improve the yield of the rice crops.
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