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Extension > Garden > Commercial fruit and vegetable production > Plant diseases > Pith necrosis of tomato

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Pith necrosis of tomato

Michelle Grabowski and Angela Orshinsky

G. Holmes, CA Polytech State Univ.,

Yellowing of tomato plant due to pith necrosis


The bacteria Pseudomonas corrugata, P. viridiflava, Pseudomonas spp., and Pectobacterium carotovorum.

Host range

Tomato, pepper, and numerous vegetable and ornamental crops.


Signs and symptoms

G. Holmes, CA Polytech State Univ.,

Aventitious roots often form on plants infected with pit necrosis


Biology and disease cycle

G. Holmes, CA Polytech State Univ.,

Dark discoloration of the stem pith due to pith necrosis


Resistant varieties

There are no tomato varieties resistant to pith necrosis.

Cultural control

Chemical control

There are no pesticides effective in managing pith necrosis.


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