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Collar rot disease caused by Sclerotium rolfsii Sacc. is one of the most important disease of sunflower in India. In the changing climate, this disease in sunflower has been recognized as a major threat in causing more economic loss than before. Environmental parameters such as relative humidity, temperature, bright sunshine hours and rainfall have been shown to influence infection and subsequent damage caused by S. rolfsii. Keeping this in view, experiment on epidemiology of collar rot of sunflower (Helianthus annus L.) caused by Sclerotium rolfsii Sacc. was conducted under field conditions at research farm of CCS, Haryana Agricultural University, Hisar in 2014-2015. | Epidemiology of collar rot of sunflower (Helianthus annus L.) caused by sclerotium rolfsii sacc.
