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Singh R.B.,Nd University Of Agriculture And Technology Kumarganj | Singh R.B.,Thakur Hukum Singh Post Graduate College | Singh H.K.,Nd University Of Agriculture And Technology Kumarganj | Parmar A.,Nd University Of Agriculture And Technology Kumarganj
Proceedings of the National Academy of Sciences India Section B - Biological Sciences | Year: 2013

Field experiments were conducted during 2008-2009 and 2009-2010 to manage Alternaria blight of linseed caused by Alterneria lini and A. linicola integrated with Trichoderma viride, fungicides and plant extract. Seed treatment (ST) with T. viride (4 g/kg seed) followed by two foliar sprays (FS) of mancozeb (0.25 %) decreased the 56.16 % blight intensity and 55.64 % bud damage on mean basis with significantly lower mean blight intensity of 23.24 % and bud damage of 12.81 %, respectively. It also increased 56.70 % seed yield with higher 1,000-seed weight (Test weight) of 7.22 g and seed yield of 1,364.58 kg/ha. This treatment was found at par with the treatments ST with thiophanate methyl (2 g/kg seed) followed by 2 FS of mancozeb (0.25 %) and recommended practice i.e. ST with thiram (3 g/kg seed) followed by 3 FS of mancozeb (0.25 %). Maximum net return of Rs. 8,891.25 with benefit cost (B:C) ratio 5.51 was also recorded with same treatment against the net return of Rs. 8,395.00 with B:C ratio of 3.87, in case of recommended practice. Seed treatment with T. viride followed by 2 FS of garlic bulb extract (1 % w/v) or neem leaf extract (5 % w/v) were also found economical and gave net return of Rs. 5,710 and 4,166.62 with B:C ratio of 4.73 and 5.24, respectively. © 2013 The National Academy of Sciences, India.

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