Watch for Symptoms of Blackleg in Potato

Nathan Kleczewski, Extension Specialist – Plant Pathology; nkleczew@udel.edu; @Delmarplantdoc

This week we started receiving reports of blackleg or black leg–type symptoms in potatoes. Remember that blackleg can be caused by Pectobacterium or the more aggressive Dickeya. In order to confirm the cause, affected plant tissues need to be tested using specialized molecular techniques. If you suspect blackleg, and would like confirmation of the cause, please contact your county agricultural agent or myself and we will be happy to assist you. In addition, growers with suspect fields should check their seed certificates and keep these handy for future purposes.’
Potato plant exhibiting symptoms of blackleg infection.

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