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Chapter 25,538

Studies in cereal diseases. III. Seedling blight and foot-rots of oats caused by Fusarium culmorum Sacc

Simmonds, P.M.

Canada Dept Agric Bull 105(N S ): 1-43

1928


Accession: 025537197

-Three distinct groups of symptoms are distinguished, namely, pre-emergence blight, seedling blight, and basal lesions on the coleoptile, mesocotyl and roots of older seedlings and mature plants. The most common mode of penetration is by means of a strand of several united germ tubes under which many hyphae enter the host cells. The optimum temp. for the pathogen is about 24[degree]-28[degree] C. It will withstand extreme desiccation. The disease develops most rapidly at soil temp. ranging from 18[degree] to 30[degree] C. Shallow seeding, early seeding, and seed treatment with certain of the organic mercury compounds gave indications of value as control measures.

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