Application of potassium either as recommended, deficient or excess dose, enhanced the level of phenolic contents, increased incubation period and thereby decreased the sheath blight severity. Application of nitrogen and phosphorous, either as recommended, deficient or excess dose resulted in reduction of phenolic content, shorter incubation period and thereby increasing the sheath blight severity. Recommended sulphur application, enhanced the phenolic contents, increased incubation period and thereby decreased the sheath blight severity. Recommended zinc application resulted in enhancement of phenolic contents, longer incubation period and thereby decreasing the sheath blight severity. Excess application of zinc, reduced the phenolic contents and incubation period but the severity of sheath blight was also lowered down. Recommended iron application (1.5 kg./ha) enhanced the phenolic contents and incubation period with a decreased level of sheath blight severity. Deficient and excess doses of iron also showed the similar trend of effect on phenolics, incubation period and sheath blight severity.
Rice, Sheath blight, Biochemical resistance, NPK, Micro nutrients, Integrated nutrient management, Phenolic contents
Bodegom, P.M.V., Broekman, R., Dijk, J.V., Bakker, C. and Rien, A. (2005). Ferrous iron stimulates phenol oxidase activity and organic matter decomposition in waterlogged wetlands. Earth and Environmental Science. 76 (1): 69-83.
Dantre, R.K., Rathi, Y.P.S. and Sinha, A.P. (2003). Elicitation of resistance in rice plants against sheath blight with nonconventional chemicals. Indian Phytopath., 3 : 283-285.
Haerdter, R. (1997). Crop nutrition and plant health of rice based cropping system in Asia. Agro-Chemicals News in Brief, 20 (4): 29-39.
Hakulinen, J., Julkunen, R. and Jorma (1995). Does nitrogen fertilization have an impact on the trade of between willow growth and defensive secondary metabolism. Tree Structure and Function. 9 (4): 235-240.
Inoue, Y. and Uchino, K. (1963). Studies on sheath blight of rice plant caused by Pellicularia sasakii (Shirai) S. Ito. I. Ecology of damage and Chemical control. Ministry of Agriculture, Forestry and Fisheries Research Council, Japan Appointed Experiment No. 4 at Yamaguchi Agril. Experiment Station, 136 pp.
Kang, I.S. and Singh, D. (2000). Status of pathological and nutritional disorders or ice in Punjab. Pl. Dis. Res., 2 : 229-231.
Kozaka, T. (1961). Ecological studies on sheath bligh of rice plant caused by Pellicularia sasakii (Shirai). S. Ito, and its chemical control. Chugoku Agril. Research., 20 : 1-33.
Kozaka, T. (1965). Ecology of Pellicularia sheath blight of rice plant and its chemical control. Ann. Phytopathol. Soc. Japan, 31 : 171-185.
Krauss, A. (2001). Potassium and biotic stress at email@example.com or www.ipiotash.org. Loo, E.P., Choun, C.Q. and Lee, D.C. (1963). Studies on Rhizoctonia blight of rice. Acta Phytophylactica Sinica., 2 : 431-440.
Meena, B., Ramamoorthy, V. and Muthusamy, M. (2001). Morphological and pathological variation in isolates of R. solani causing sheath blight of rice. Pl. Dis. Res. 16 (2) : 166-172.
Mondal, S.S., Pramanik, C.K. and Das, J. (2001). Effect of nitrogen and potassium on oil yield, nutrient uptake and soil fertility in soybean (Glycine max) sesame (Sesamum indicum) intercropping system. Indian J. Agric. Sci. 71: 44-46.
Perrenoud, S. (1990). Potassium and plant health. IPI Research Topics No. 3, 2nd rev. edition.
Roy, A.K. (1986). Effect of slow-release nitrogenous fertilizers on the incidence of sheath blight and yield of r Roy, A.K. (1986). Effect of slow-release nitrogenous fertilizers on the incidence of sheath blight and yield of rice. Oryza., 23: 198-199.
Sarkar, M.L. and Sinha, A.K. (1991). Control of sheath blight of rice by unconventional chemicals. Indian Phytopath. 3: 379-382.
Sweeney, D.W., Granade, G.V., Eversmeyer, M.G. and Whitney, D.A. (2000). Phosphorus, potassium chloride and fungicide effects on wheat yield and leaf rust severity. J. Plant Nutr. 23: 9, 1267-1281.
Tiwari, A. and Khare, M.N. (2001). Influence of plant age and phenolic contents of mungbean on resistance to Rhizoctonia solani Kuhn. Indian Journal of Pulses Research., 14: 1, 67.
Vijaya Bhaskar, C. Rama Rao, G. and Reddy, K.B. (2001). Effect of nitrogen and potassium nutrition on sheath rot incidence and phenol content in rice (Oryza sativa L.). Indian J. Plant Physiol., 6: 254-257.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)