Vol. 11, Special Issue 1 (2022)

Author(s):
Sangeetha KD, Dr. VK Parthiban, Dr. S Nakkeeran and Dr. Johnson I

Abstract:
Rice is the second important cereal crop and serving as staple food for more than half of the world’s population. Sheath blight of rice caused by Rhizoctonia solani Kuhn is an economically important disease posing serious threat to rice cultivation. This disease is distributed in almost all the rice growing states in India. The disease is in alarming condition due to increased cultivation of high yielding varieties, application of higher doses of nitrogenous fertilizers and lack of resistance gene. Hence study was conducted to evaluate the efficacy of various commercial fungicides in alternation with bio-control agents under field conditions. Among the treatments, Amistar Top @ 1ml/L and Bacillus amyloliquefaciens recorded least mean PDI of 11.90 and 10.56 during Kharif 2019 and Kharif 2020 when compared to other treatments. Similarly, highest % ROC of 59.98 and 68.80 was also recorded in the same treatment during both seasons. Highest yield was recorded in Ayaan @ 1gm/L (48.51q/ha) in Kharif 2019 and Amistar Top @ 1ml/L (51.46q/ha) in Kharif 2020.