Abstract
IN the course of field experiments with dry rot of swedes caused by Phoma lingam (Tode) Desm., the presence of a different form of rot was observed on Magnificent and Tipperary purple topped swedes growing at East Craigs, Corstorphine. This rot was characterized by a slightly sunken, putty-coloured lesion, usually bearing closely spaced faint zone lines. It was readily distinguished from Phoma lingam rot by the absence of fructifications and the presence of a pink margin instead of a dark brown one. Such lesions were always associated with mechanical injury to the swede ‘root’. The rot was comparatively shallow, dry, rather fibrous and yellowish-brown in colour.
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References
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DENNIS, R. Rhizoctonia Rot of Swedes. Nature 147, 87 (1941). https://doi.org/10.1038/147087a0
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DOI: https://doi.org/10.1038/147087a0
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