Vol. 11, Special Issue 9 (2022)

Author(s):
Naila Shohrat, Dr. Yenjerappa ST, Dr. Amaresh YS, Dr. Aswathanarayana DS, Dr. Sathyanarayana Rao and Dr. Ashok Hugar

Abstract:
Chrysanthemum (Dendranthema grandiflora), is one among the three best merchandisable multi use flower crops facing challenges in production by, weather uncertainties, insects and diseases outbreaks. Septoria leaf spot (SLS) a common disease inflicts considerable qualitative and quantitative losses. The current research was conducted to ascertain the severity of SLS in Northern parts of Karnataka. A total of 118 chrysanthemum fields were surveyed in 8 districts during 2019-21 and 2020-21 years were randomly assessed for SLS disease. The mean severity of SLS in Northern parts of Karnataka during the assessment years indicated that, maximum disease severity of 75.00 percent was observed in Doni village of Gadag district followed by Muradi (70.50 PDI) and Nelzeri (69.60 PDI) villages of Koppal district. Moderate disease severity was recorded in Yaragatti (47.50 PDI) followed by Yarazavi (50.50 PDI) villages of Belgavi district and Halagapura (51.50 PDI) village of Vijayanagara district. Whereas, lowest disease severity was observed in Sambra (39.60 PDI) village of Belgavi district followed by Hallekate (43.50 PDI) village of Ballari district. The present findings confirmed the importance of SLS in Northern parts of Karnataka.