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Lalan Sharma D. T. Nagrale S. K. Singh K. K. Sharma A. P. Sinha

Abstract

Sheath rot, Sarocdadium oryzae (Sawada) Gams. and Hawksw., has recently become a serious disease of rice when climatic conditions are unfavorable during flag sheath development. In this study systemic and nonsystemic fungicides were tested against S. oryzae. Maximum inhibition of radial growth (76.53%) was recorded at 10.0ppm of tebuconazole fungicides. In non-systemic fungicides, maximum inhibition of radial growth (78.86%) was recorded at 200.0ppm. Comparative efficacy of fungicides on sheath rot was tested during Kharif 2008-2009. Foliar spray of tebuconazole was found superior overall other treatments giving reduction in disease severity (59.01-64.33%), which was followed by followed by carbendazim (48.70-55.28%), and also increased grain yield per plant (45.06-65.84%), grain yield per plot (45.57-65.85%), 1000-grains weight (10.80-52.58%) and reduction in chaffiness (48.07-53.80%). Among non-systemic fungicides chorothalonil was found best in managing sheath rot, giving reduction in disease severity (35.68-38.85%), and also increased grain yield per plant (24.78-44.74%), grain yield per plot (24.52-44.57%), 1000-grains weight (4.25-35.47%) and reduction in chaffiness (15.74-45.96%) as compared to check. Another field experiment was conducted during Kharif 2009-10 to observe sheath rot incidence on rice cultivars in Tarai region. The incidence was recorded in thirty three varieties; only varieties (Type-3 and Basmati-370) were recorded as free from disease symptoms.

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Keywords

Fungicides, Germplasm, Sarocladium oryzae, Sheath rot

References
Amin, K.S., Sharma, B.D. and Das, C.R. (1974). Occurance in India of sheath rot of rice caused by Acrocylindium. Plant Dis. Reptr., 58 : 358-360.
Bolla, Venkateswarlu, Venkteswarlu, D. and Chauhan, H.L. (2004). Evaluation of rice genotypes and fungicides against sheath rot of rice caused by Sarocladium oryzae Sawada. J. Res. ANGRAU, 32(4) : 59-67.
Chen, C. C. and Chein, C. C. (1964). Some observations on the outbreak of rice sheath rot disease. J. Taiwan Agric. Res., 13: 39-45.
Chinnaswamy, R., Nair, M. C. and Menon, M. R. (1981). Comparative efficacy of certain fungicides in the control of sheath rot of rice. Agricultural Research Journal of Kerala. 19 (2): 86-88.
Chung, H. S. (1975). Studies on sheath rot of rice caused by Acrocyliandrium oryzae Sawada testing varietal reaction and culture filtrates of the caused fungus. Korean J. Pl. Prot., 14: 23-27.
Dodan, D. S., Singh, R., Sunder, S. and Singh, R. (1996). Efficacy of fungi toxicants against sheath rot of rice. Indian Journal of Mycology and Plant Pathology. 26 (3) : 283-284.
Grover, R. K. and Moore, J. D. (1966). Toximetric studies of fungicides against brown rot organisms Sclerotinia fructicola and Sclerotinia lexa. Phytopathology. 52: 876 – 880.
IRRI (1996). International Rice Research Institute (IRRI). Annual report of rice. Page - 25.
Karmakar, S. K. (1992). Response of rice cultivars against sheath rot disease caused by Sarocladium oryzae (Sawada), W. Gams and D. Hawks Worth, under protected and unprotected conditions. Orissa J. Agric. Res., 5:209-214.
Kulwanth, S. and Mathur S.B. (1992). Further evidence of transmission of Sarocladium oryzae through rice seeds and its quarantine significance. Indian Phytopathology. 45(1): 454-456.
Lewin, H.D. and Vidhyasekaran, P. (1987). Controlling sheath rot (ShR) in rice. Int. Rice Res. Newsl., 12(1):17.
Mckinney, H. H. (1923). Influence of soil temperature and moisture on infection wheat seedling by Halminthosporium sativum. J. Agric. Res., 26: 195 - 210.
Mew, T.W., and Gonzales (2002). A Handbook of Rice Seed Borne Fungi. IRRI Science Publishers, pp. 83.
Naik, R. (1976). Incidence of sheath rot in rice- a potential problem in Sambalpur, Orissa. IRRI News Letter. 1: 19.
Reddy, M. M., Reddy, C. S. and Gopal, S. B. (2000). Effect of sheath rot disease on quality characters of rice grain. J. Myc. Plant Pathol., 30 (1): 68-72.
Reddy, E. J. S., Chary, M. P. and Reddy, S. M. (1983). Evaluation of different fungicides in the control of sheath rot of rice caused by Acrocylindrium oryzae. Indian J. Mycol. Plant Pathol., 13(1) : 105.
Sachan, I.P. and Agarwal, V.K. (1995). Seed discolouration of rice: location of inoculum and influence on nutritional value. Indian Phytopathology. 48 (1):14-20.
Singh, R.A. and Raju, C.A. (1981). Studies on sheath rot on rice. Int. Rice Res. Newsl., 6(2):11.
Subramanian, C. L. and Ramakrihnan, G. (1975). Varietal reactions to the sheath rot of rice, Acrocylindrium oryzae Sawada Curr. Sci., 6: 151-166.
Thrimurty, V.S. (1986). Studies on chemical control of sheath rot of rice. Pesticides.9: 20-21.
Vidhyasekaran, P., Ranganathan, K. and Rajamanickam (1984). Quality of rice grains from sheath rot affected plant. International Rice Research Newsletter. 9(5): 5.
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Sharma, L., Nagrale, D. T., Singh, S. K., Sharma, K. K., & Sinha, A. P. (2013). A study on fungicides potential and incidence of sheath rot of rice caused by Sarocladium oryzae (Sawada). Journal of Applied and Natural Science, 5(1), 24-29. https://doi.org/10.31018/jans.v5i1.276
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