Int.J.Curr.Microbiol.App.Sci (2020) 9(6): 3116-3118 3116 Original Research Article https://doi.org/10.20546/ijcmas.2020.906.373 Fungicidal Management of Sheath Rot Disease of Rice Caused by Sarocladium oryzae R. B. Sharma*, A. K. Singh, Neelam Kumari and Ashish Rai KrishiVigyan Kendra, Piprakothi, East Champaran, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India *Corresponding author ABSTRACT Introduction Sheath rot caused by Sarocladium oryzae (Sawada) Games and Hawksworth has become a serious problem in most of the rice growing area of the country. In India this disease was first time reported by Agnihothrudu (1973). Densely planted field are more susceptible to Sarocladium oryzae infection. The fungus tends to attack the leaf sheaths enclosing young panicles, which retards or aborts the emergence of panicles. Seed from infected panicles becomes discolored and sterile, thereby reducing in grain yield and yield losses varied from 9.6 to 85% depending on the weather conditions during the crop growth period (Phookhan and Hazarika, 1992). The fungus is detected frequently during routine seed health testing and causes empty grain production (Kulwanth and Mathur, 1992) and glume discolouration (Sachan and Agarwal, 1995) and also seed diclouration (Reddy et al., 2000). It also causes poor grain filling and reduction in seed germination (Vidhyasekaran et al., 1984). Seeds from infected panicles became discoloured and International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 6 (2020) Journal homepage: http://www.ijcmas.com Four fungicides i.e. Carbendazim 50% wp (Bavistin), Tricyclazole 75% wp (Beam), Mancozeb 63% + Carbendazim12%wp (Saaf) and Tricyclazole18%wp + Mancozeb 62% wp (Merger) were evaluated against Sheath rot disease of Rice under field condition during Kharif, 2017-18. Among the fungicides two sprays of Tricyclazole 18% wp + Mancozeb 62% wp (Merger) @ 2 g/liter of water ( 1st spray at boot leaf stage and 2nd at 10 days after 1st spray) recorded least Sheath rot disease severity i.e. 9.05%, maximum grain yield (39.50 q/ha) and B:C ratio 1:1.92 Keywords Sheath rot, Rice, Disease severity (%), Fungicides, Yield Accepted: 21 May 2020 Available Online: 10 June 2020 Article Info