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Investigation of Combi product fungicides for the management of blast diseases of paddy

Rice (Oryza sativa L.) is an important cereal crop belonging to the grass family Poaceae. An experiment was conducted during Kharif 2017 and 2018 to know the impact of nine fungicide treatments. Among nine treatments, Azoxystrobin 18.2 % w/w +Difenoconazole 11.4% w/w SC @ 1.0 g/L and Trifloxystrobin 25% + Tebuconazole 50% WG @ 0.4 g/L were on par with each other with least pooled leaf blast disease index of 20.03% and 20.90% and neck blast disease incidence of 16.48% and 16.93% respectively followed by Tricyclazole 75% WP @ 0.6 g/L. Further, the highest pooled yield was recorded in Trifloxystrobin 25% + Tebuconazole 50% WG @ 0.4 g/L (4311.85 kg/ha) followed by Azoxystrobin 18.2 % w/w + Difenoconazole 11.4% w/w SC @ 1.0 g/L (4310.74 kg/ ha). However, when cost benefit ratio was calculated, Trifloxystrobin 25% + Tebuconazole 50% WG (1.58) and Azoxystrobin 18.2 % w/w + Difenoconazole 11.4% w/w SC(1.58) respectively followed by Tricyclazole 75% WP (1.46). | Investigation of Combi product fungicides for the management of blast diseases of paddy