STUDIES ON POTATO WILT CAUSED BY Sclerotium rolfsii Sacc.
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Date
2007-01-03
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University of Agricultural Sciences GKVK, Banglore
Abstract
Potato ^Solanum tuberosum L.) is one of the most important
commercial vegetable crops cultivated in northern Kamataka. Wilt of
potato caused by Sclerotium rolfsii Sacc. is exerting the major threat in
potato cultivation in Karnataka.
A rovmg survey was conducted in potential potato growing areas of
Zone 8 (Dharwad and Belgaum districts). Maximum wilt incidence
(30.00%), and maximum tuber rot (43.00%) were recorded in Uigon
village of Belgaum.
The fungus was isolated from the rhizosphere pf wilted plant and
.denhfied based on whhe dense radiating mycelium in culture and
infected plants.
Potato plants were raised in an inoculated pot and pure culture of
S. rolfsii was obtained from wilted plants showing typical wiltmg
symptoms and pathogenicity was proved successfully at the same time
symptomatology was studied.
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