Toxic seed piece syndrome (TSPS) develops when the potato plant absorbs the breakdown juices from its rotting seed piece. Often, if an extended dry period is
followed by very wet weather, seed pieces undergo a watery breakdown. The breakdown products are toxic to the plant.
but the stems are still green.
Plants exhibiting these symptoms almost
invariably have a seed piece with a watery
breakdown.
roll up and the margins of the leaves die.
