Bio-efficacy of tricyclazole 22.5% W/V + azoxystrobin 7.5% W/V against sheath blight disease of paddy

Abstract

A new combination fungicide Tricyclazole 22.5% W/V (20.36% W/W) + Azoxystrobin 7.5% W/V (6.79% W/W) was tested against rice sheath blight diseases under field condition during Kharif 2015 and Rabi 2015-16. The combination fungicide Tricyclazole 22.5% W/V (20.36% W/W) + Azoxystrobin 7.5% W/V (6.79% W/W) at 1000 ml/ha was found effective against sheath blight diseases by recording least Percent Disease Index (PDI) of 14.44 during Kharif 2015 and 13.35 during Rabi 2015-16. Significant increase in grain yield (61.53 q/h) was also observed in the plots treated with Tricyclazole 22.5% W/V (20.36% W/W) + Azoxystrobin 7.5% W/V (6.79% W/W) at 1000 ml/ha in Kharif 2015 (61.53 q/ha) and Rabi 2015-16 (64.62 q/ha), whereas, other fungicide treatments recorded the yield in a range of 48.88 – 59.53 q/ha (Kharif 2015) and 46.26 – 61.28 q/ha (Rabi 2015-16).