International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Survey for the post-harvest diseases of onion with special reference to black mould in Chikkamagaluru, Chitradurga and Davanagere districts of Karnataka

Siddayya, Narayanaswamy H, Suresh D Ekabote, Pradeep S, Nagarajappa Adivappar

Onion (Allium cepa L.) is one of India's most valuable vegetable crops and is grown for domestic and export purposes, as well as a valued commodity for consumption, both medicinal and commercial. Some post-harvest diseases deteriorate the quality and quantity of the onion crop. Among many post-diseases black mould, basal rot, green mould and soft rot are the most important. A roving survey was carried out during 2019-2020 in the vegetable markets (APMC Markets) and in onion growing villages of Chikkamagaluru, Chitradurga and Davanagere districts of Karnataka to know the severity of onion post-harvest diseases. The per cent disease index was recorded using 0-5 scale. The maximum per cent disease index of black mould (10.10 %) was recorded in the farmer's fields of Chitradurga district and the least severity (8.90 %) was noticed in the farmer's fields of Chikkamagaluru district. In case of APMC markets, the maximum disease severity of black mould (56.00 %) was recorded in Davanagere district followed by Chitradurga (35.00 %) and the least severity (25.50 %) was noticed in Chikkamagaluru district. Compared to onion field, disease severity is more in APMC markets.
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How to cite this article:
Siddayya, Narayanaswamy H, Suresh D Ekabote, Pradeep S, Nagarajappa Adivappar. Survey for the post-harvest diseases of onion with special reference to black mould in Chikkamagaluru, Chitradurga and Davanagere districts of Karnataka. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 148-151.