Vijaypal Jakhar1, P.K. Gupta2, Anand Choudhary*3 and Lokesh Sharma4
1,2,4Department of Plant Pathology, Jawaharlal Nehru Krishi Vishwa Vidyalaya,
Jabalpur – 482004, M.P., India
3Department of Plant Pathology, CoA, Bikaner (Swami Keshwanand Rajasthan Agricultural University, Bikaner- 334006, (Rajasthan), India
Email: vijaypaljakhar1996@gmail.com
Received-05.11.2021, Revised-21.01.2022, Accepted-27.01.2022
Abstract: Field trial was carried out (2019-20) to assess the role of nine different levels of nitrogen (40, 50, 60, 70, 80, 90, 100, 110 kg acre-1) and untreated application on their effect on incidence of false smut of rice using two rice genotype viz., Kranti and MTU 1010 at experimental field, department of Plant Pathology JNKVV, Jabalpur (M.P). The results indicated that In Kranti, maximum disease incidence of 50.1 percent was observed at 110 kg/acre nitrogen level followed by 43.2 percent at 100 kg/acre and minimum disease incidence 8.5 percent in control. Total number of tiller and infected number were increased with increase nitrogen levels and observed maximum at nitrogen level 110 kg i.e. 261 and 110.7, respectively. In cultivar MTU1010, the disease incidence of 19.7 percent was observed in plots with nitrogen 110 kg/acre followed by 18.1 percent with nitrogen 100 kg/acre and minimum disease incidence 3.4 percent was observed in control. Total number of tiller and infected were increased with increase nitrogen levels and observed nitrogen level i.e. 240.8 and 47.5 respectively.
Keywords: Rice, false smut, nitrogen dose, Ustilaginoidea virens, disease incidence
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