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VOL. 8, ISSUE 2 (2026)
Severity of Alternaria blight disease of sunflower in Karnataka
Authors
Ashwini, Poornima, Gururaj S, Sreedevi S C, Vikas V K
Abstract
Sunflower (Helianthus annuus) is one of the important oilseed
crops in India, popularly known as “Surajmukhi” which belongs to the botanical
family “Asteraceae”. It was originated in North America and is known for
major source of vegetable oil in the world but its production is constrained
due to various biotic and abiotic stresses. Among the biotic stress, Alternaria
blight of sunflower causes yield loss up to 80 per cent under severe
conditions. An intensive roving survey was conducted to know the severity of
leaf blight of sunflower, in different locations of Karnataka viz., Bagalkote,
Chamarajanagar, Gadag, Koppal, Raichur and Vijayapura districts during Kharif
2024-25. The disease severity ranged from 10.56 to 63.15 per cent. Among the sunflower
growing districts, the maximum disease severity was recorded in Chamrajanagar (56.99%)
followed by Koppal (49.66%). However, least severity was observed in Gadag with
30.02 per cent.
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Pages:18-20
How to cite this article:
Ashwini, Poornima, Gururaj S, Sreedevi S C, Vikas V K "Severity of <i>Alternaria </i>blight disease of sunflower in Karnataka". International Journal of Ecology and Environmental Sciences, Vol 8, Issue 2, 2026, Pages 18-20
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