Vol. 10, Issue 10 (2021)

Author(s):
Gowdar SB, Ashwini R, Sujay Hurali, Mastan Reddy BG and Mahanthashivayogayya H

Abstract:
Paddy is an important food crop of the world including India. Under field condition, the productivity of rice is affected by many biotic and abiotic factors. Among the different biotic constraints, diseases caused by fungal pathogens such as blast and sheath rot, stem rot, grain discoloration are more frequent and ferocious disease in irrigated rice of both temperate and subtropical areas and which cause damage at all stages of crop growth. Blast, sheath rot, stem rot and grain discoloration are major constrain of paddy production reported to cause extensive damage in crop production. An experiment was conducted to assess the Bio- efficacy and Phytotoxicity of Thiophanate methyl 41.7% SC against blast, sheath rot, stem rot and grain discoloration diseases of Paddy at ARS, Gangavathi. Results revealed that, among the various treatments evaluated, Thiophanate methyl 41.7% SC @ 1200 ml/ha (T3) and Thiophanate methyl 41.7% SC @ 960 ml/ha (T2) were found to be the best treatments to control blast, sheath rot, stem rot and grain discoloration during both the seasons. The phyto- toxic effects such as leaf necrosis, leaf tip injury, wilting, vein clearing, epinasty and hyponasty were recorded on ten randomly selected plants of Rice from each plot at 3 and 5 days after application (DAA) and it was noticed that no phyto-toxicity were recorded with foliar application of Thiophanate methyl 41.7% SC at all the concentrations tested i.e. 1200, 1920 and 2400 ml/ha dose during both the seasons.