Delineation of Purple Blotch Disease Hotspots Caused by Alternaria porri in Key Onion Cultivation Regions of Southern Karnataka, India

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dc.contributor.authorRavichandraen_US
dc.contributor.authorEkabote, SDen_US
dc.contributor.authorGanesha Naik, R.en_US
dc.contributor.authorHosagoudar, G. N.en_US
dc.contributor.authorAdivappar, Nen_US
dc.contributor.authorRamesh, A. N.en_US
dc.date.accessioned2024-09-24T07:37:13Z
dc.date.available2024-09-24T07:37:13Z
dc.date.issued2023-11
dc.description.abstractOnion (Allium cepa L.) stands as a crucial bulb crop and a primary commercial vegetable crop in India. Among the various maladies affecting bulb and seed development, purple blotch, caused by Alternaria porri, stands out as one of the most devastating. This ailment inflicts extensive damage on both bulb and seed crops. Through an extensive roving survey, we have unveiled the disease's prevalence, enabling the identification of disease hotspots in the major onion cultivation regions of southern Karnataka. A total of 28 hotspot regions were identified in the eight districts surveyed for purple blotch disease severity in onions. Notably, the highest mean of percent disease index (PDI) was recorded in Chikkamagaluru (51.12%), while Chamarajanagara showed the lowest mean PDI (23.35%). Among all surveyed villages, the most severe disease prevalence was observed in Koverahatti village within Hiriyur taluk of Chitradurga district, with a PDI of 64.47%. On the other hand, the lowest disease severity was noted in Uttamballi village (16.89%) in Kollegala taluk, Chamarajanagara district.en_US
dc.identifier.affiliationsDepartment of Plant Pathology, College of Agriculture, KSNUAHS, Shivamogga, Indiaen_US
dc.identifier.affiliationsDepartment of Horticultural Crop Protection, College of Horticulture, Hiriyur, KSNUAHS., Shivamogga, Indiaen_US
dc.identifier.affiliationsDepartment of Plant Pathology, College of Agriculture, KSNUAHS., Shivamogga, Indiaen_US
dc.identifier.affiliationsDepartment of Plant Pathology, College of Agriculture, KSNUAHS., Shivamogga, Indiaen_US
dc.identifier.affiliationsDepartment of Horticulture, College of Agriculture, KSNUAHS., Shivamogga, Indiaen_US
dc.identifier.affiliationsDepartment of Plant Biotechnology, College of Horticulture, Hiriyur, KSNUAHS., Shivamogga, Indiaen_US
dc.identifier.citationRavichandra, Ekabote SD, Ganesha Naik R., Hosagoudar G. N., Adivappar N, Ramesh A. N. . Delineation of Purple Blotch Disease Hotspots Caused by Alternaria porri in Key Onion Cultivation Regions of Southern Karnataka, India . International Journal of Environment and Climate Change. 2023 Nov; 13(11): 3729-3740en_US
dc.identifier.issn2581-8627
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/230599
dc.languageenen_US
dc.publisherMs. M. B. Mondalen_US
dc.relation.issuenumber11en_US
dc.relation.volume13en_US
dc.source.urihttps://doi.org/10.9734/ijecc/2023/v13i113553en_US
dc.subjectOnionen_US
dc.subjectpurple blotchen_US
dc.subjectdiseaseen_US
dc.subjectpercent disease index (PDI)en_US
dc.subjectAlternaria porrien_US
dc.titleDelineation of Purple Blotch Disease Hotspots Caused by Alternaria porri in Key Onion Cultivation Regions of Southern Karnataka, Indiaen_US
dc.typeJournal Articleen_US
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