International Journal of Plant Sciences

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Influence of Nitrogenous Fertilizer Levels, Planting Density and IDM on Severity of Sheath Blight of Rice Caused by Rhizoctonia solani Kuhn in Northern Karnataka


Affiliations
1 AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), India
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India
     

   Subscribe/Renew Journal


The study was conducted to know the influence of nitrogenous fertilizer levels, planting density and integrated disease management (IDM) on the severity of sheath blight of rice in northern Karnataka. The results indicated that, application of 200 kg N per ha recorded higher per cent disease index (PDI) of 40.37 per cent. However, increased N application from 100 kg N to 350 kg N per ha resulted in increased PDI from 17.04 to 62.60%, respectively. Minimum PDI (23.33%) and higher grain yield (67.80 q/ha) were recorded at 150 kg N per ha which is the recommended N dosage in Thunga Bhadra Project command area of Karnataka state. Among different planting densities, the system of rice intensification (SRI) method (16 hills/m2) recorded least PDI (5.00%) and highest grain yield (67.16 q/ha) whereas increased planting density from 20 to 70 hills per m2 resulted in higher PDI from 6.86 to 45.18 per cent, respectively. However, at 50 hills per m2, 16.12 PDI was recorded with a grain yield of 60.53 q per ha which is the recommended planting density. In the integrated disease management (IDM) trial, wherein, use of cultivar, IR-64 (moderately resistant variety) with foliar application of fungicide hexaconazole (@0.1%) resulted in minimum PDI of 21.26% with higher grain yield of 71.74 q per ha as against 34.73 PDI and 56.87 q per ha grain yield in Samba mahsuri (susceptible variety).

Keywords

Nitrogen Fertilizer, Planting Density, IDM, Sheath Blight, Rice.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Anonymous (1996). Standard evaluation system for rice, International Rice Research Institute, Manila, Philippines, p. 25.

  • Cu, R.M., Mew, T.W., Cassman, K.G. and Teng, P.S. (1996). Effect of sheath blight on yield in tropical, intensive rice production system. Plant Dis., 80 : 1103-1108.

  • Jeyasekhar, M. and Prasad, N.N. (1989). Effect of different levels of potassium at each of the nitrogen levels on the incidence of sheath rot : Growth and yield of rice. Madras Agric. J., 75 : 1-4.

  • Lee, F.N. and Rush,M.C. (1983). Rice sheath blight. A major rice disease. Pl. Dis., 67 : 829-832.

  • Manibhushanrao, K. and Baby, U.I. (2000). Integrated disease management of sheath blight in rice. In : Intl. Conf. on Integrated Plant Disease Management for Sustainable Agriculture, IARI, New Delhi, Indian Phytopathology Golden Jubilee Proceedings, 1 : 191-194.

  • Prasad, D., Singh, R. and Singh, A. (2010). Management of sheath blight of rice with integrated nutrients. Indian Phytopath., 63: 11-15.

  • Rajan, C.P.D. (1986). Influence of sheath blight (Sh. B) on agronomic traits at different N levels. Int. Rice Res. Newslett., 11 : 23.

  • Reddy, C.S. (1993). Virulence in Rhizoctonia solani and sources of sheath blight resistance in rice. In. Plant Disease Problems in Central India, pp. 66-70 (Eds., Muralidharan, K. and Reddy, C.S.), Proc. Symp. Central Zone, IPS, DRR, India, 114 pp.

  • Roy,A.K. (1986).Effect of slow releasing nitrogenous fertilizers on the incidence of sheath blight and yield of rice. Oryza, 23 : 198-199.

  • Sarkar,M.K., Sharam,B.D. and Gupta, P.K.S. (1991). The effect of plant spacing and fertilizer application on the sheath blight of rice caused by Rhizoctonia solani. Beitrage Zur Tropischen Landwirtschaft & Veterinarmedizin, 29 : 331-335.

  • Shanmugham, N. and Jeyarajan, R. (1988). Rice diseases in Tamil Nadu. In : Proceedings of the rice pathologists group meetings on the current status of blast and sheath blight diseases of rice in India, held at DRR, Hyderabad, 7 pp.

  • Singh, Shivakumar, Shukla, Vivek, Singh, Harpal and Sinha, A.P. (2004). Current status and impact of sheath blight in rice. Agric. Rev., 25(4) : 289-297.

  • Srinivasan, S. (1980). Effect of nitrogen and spacing on sheath blight incidence in rice. Internat. Rice Res. Newslett., 5 : 15-16

  • Surulirajan, M. and Kandheri, Janki (2005). Integrated management of rice sheath blight under field condition. Indian Phytopathol., 58(4) : 431-436.

  • Wheeler, B.E.J. (1969). An introduction to plant disease, John Willey and Sons Ltd., London, p. 301.


Abstract Views: 332

PDF Views: 0




  • Influence of Nitrogenous Fertilizer Levels, Planting Density and IDM on Severity of Sheath Blight of Rice Caused by Rhizoctonia solani Kuhn in Northern Karnataka

Abstract Views: 332  |  PDF Views: 0

Authors

P. Nagaraju
AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), India
M. K. Naik
Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), India

Abstract


The study was conducted to know the influence of nitrogenous fertilizer levels, planting density and integrated disease management (IDM) on the severity of sheath blight of rice in northern Karnataka. The results indicated that, application of 200 kg N per ha recorded higher per cent disease index (PDI) of 40.37 per cent. However, increased N application from 100 kg N to 350 kg N per ha resulted in increased PDI from 17.04 to 62.60%, respectively. Minimum PDI (23.33%) and higher grain yield (67.80 q/ha) were recorded at 150 kg N per ha which is the recommended N dosage in Thunga Bhadra Project command area of Karnataka state. Among different planting densities, the system of rice intensification (SRI) method (16 hills/m2) recorded least PDI (5.00%) and highest grain yield (67.16 q/ha) whereas increased planting density from 20 to 70 hills per m2 resulted in higher PDI from 6.86 to 45.18 per cent, respectively. However, at 50 hills per m2, 16.12 PDI was recorded with a grain yield of 60.53 q per ha which is the recommended planting density. In the integrated disease management (IDM) trial, wherein, use of cultivar, IR-64 (moderately resistant variety) with foliar application of fungicide hexaconazole (@0.1%) resulted in minimum PDI of 21.26% with higher grain yield of 71.74 q per ha as against 34.73 PDI and 56.87 q per ha grain yield in Samba mahsuri (susceptible variety).

Keywords


Nitrogen Fertilizer, Planting Density, IDM, Sheath Blight, Rice.

References