DIAGNOSIS AND MANAGEMENT OF ‘DANZAZZALAU’ DISEASE OF ONION (ALLIUM CEPA L.) IN KEBBI STATE, NORTHWEST NIGERIA
ABSTRACT Onion is an important vegetable crop in Nigeria grown in both wet and dry seasons though it fetches higher profit when cultivated in the dry season. The crop yield is limited by some production constraints, notable of which is the „Danzazzalau‟ disease in Kebbi State. Fungi isolated from infected pseudostem and roots of onion were Fusarium sp. and Thielavia sp. Pathogenicity test was conducted using these fungi and Fusarium ...
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