EFFICACY OF SELECTED FUNGICIDES IN CONTROLLING SHEATH BLIGliT (Rhizoctonia solani) DISEASE OF RICE

Abstract

Effect of ten selected treatments viz. T vii 1 (Control). T2 (Knowin 50 WP). T3 {Score 250 b.C), T.1 (Controll 5 EC), T5 (Proud 25 EC). T6 (Tilt 250 EC). T7 (Folicur 250 EW). T8 (Sunvit 50 WP). r, (Cupravit 50 WP) and T10 (Bordeaux mixture) were studied on sheath blight of rice BRRl 40 during Aman season in the Farm of Sher-e-Bangla Agricultural University. Dhaka. The lowest number of sheath blight infected tillers/hill was observed in T (Tilt 250 EC) where the highest number was found in control (T 6 1 ). The highest percentage of relative lesion height (%RLH) was observed in Control (T1) and lowest was found in T6 (Tilt 250 EC) plot. AU the chemicals significantly reduced percentage of sheath area diseased over control except Bordeaux mixture.The highest lesion height/sheath was obtained from the treatment T1 (Control) under field condition and the lowest was found in T (Tilt 250 EC) plot. All the treatments influenced yield contributing parameters of rice. The treatment T6 (Tilt 250 EC) resulted 6.07 t/ha grain yield which was 6 l .86o/o increased over untreated control. Tilt 250 EC is the best fungicide.