Effect of Soil Amendments on Bakanae Disease in Rice (Oryza sativa L.)

Abstract

An experiment was conducted to “Studies on use Soil amendments against Bakanae disease of rice (Oryza sativa L.)’’. The experiment was laid out in Randomized Block Design (RBD) with 6 treatment and replicated thrice. Study on disease severity of rice in field conditions revealed that the minimum disease intensity (31.15%) was obtained in T2 Trichoderma viride+ Pseudomonas fluorescens followed by T3 Trichoderma (50.87%), T4 Neem cake + Mustard cake (52.08%) and T6 Jeevamrit (55.71%), T5 Liquid Consortia (57.19%) and the highest was recorded in treatment T1 Control (72.18%). Among the treatments the plant height (cm) significantly increased in T2 Trichoderma viride+ Pseudomonas fluorescens (111.11cm) followed by T6 Jeevamrit (110.81cm), T3 Trichoderma (109.51cm), T4 Neem cake + Mustard cake (108.21cm) T5 Liquid Consortia (107.21cm) and the lowest was recorded in treatment T1 Control (103.02cm). The number of tillers/hill significantly highest in T2 Trichoderma viride+ Pseudomonas fluorescens (13.98a) followed by T6 Jeevamrit (13.58a), T5 Liquid Consortia (12.59b), T3 Trichoderma (12.10b), T4  Neem cake + Mustard cake (11.87b) and the lowest was recorded in treatment T1 Control (9.87c). The maximum numbers of tillers/hill was recorded in T2 Trichoderma viride+ Pseudomonas fluorescens (9.55a) followed by T6 Jeevamrit (8.75b), T5 Liquid Consortia (8.81b), T3 Trichoderma (7.88c), T4  Neem cake + Mustard cake (7.17d) and the minimum was recorded in treatment T1 Control (7.01d). The maximum numbers of tillers/hill was recorded in T2 Trichoderma viride+ Pseudomonas fluorescens (4.20a) followed by T6 Jeevamrit (3.62b), T5 Liquid Consortia (2.81c), T3 Trichoderma (2.62cd), T4  Neem cake + Mustard cake (2.34d) and the minimum was recorded in treatment T1 Control (1.57e). The maximum gross return (Rs. 166518 ha-1), net return (Rs. 132938 ha-1) and benefit cost ratio (1:3.96) was found in treatment T2 Trichoderma viride+ Pseudomonas fluorescens. Where as the minimum gross return (Rs. 67454 ha-1), net return (Rs. 34274 ha-1) and benefit cost ratio (1:1.02) was obtained in treatment T1 Control.