SeedborneFusarium moniliformeand Seedling Infection in Hybrid Sweet Corn

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Abstract
In greenhouse studies, a highly significant positive correlation was found between the percentage of hybrid sweet corn seeds with seed-borne F. moniliforme and the percentage of crowns of resulting plants containing F. moniliforme. Under field conditions at Caldwell, Idaho [USA], seedling infection was independent of the level of seed-borne inoculum, suggesting that infection originated primarily from soil-borne inoculum at this location. Under field conditions at Moscow, Idaho, however, F. moniliforme was isolated from seedling tissues more frequently when seed was coated with inoculum of the pathogen than when seed was surface disinfected. Other soil fusaria, as well as the inoculum level, influenced the number and kind of Fusarium spp. isolated from young seedlings.

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