Toxic Seed Piece Syndrome (E3336)

Toxic seed piece syndrome (TSPS) is a physiological disorder that has been reported in potato production regions worldwide. In the U.S., it has been observed in California, Maine, Michigan and Oregon. No specific pathogen has been identified as a singular causal agent of this disorder, although secondary infection of Verticillium dahliae, Colletotrichum coccodes and Fusarium spp. has been detected in potato roots and stems of symptomatic potatoes grown in Michigan exhibiting TSPS. This 3-page bulletin from Michigan State University details the symptoms of the disease using full-color photos. It discusses TSPS in Michigan as well as monitoring and management. 

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