An unusual Phoma stem rot of tomato

The tomato stem rot disease appears to be caused by Phoma labilis and a Phoma species closely related to P. destructiva

This factsheet provides information on tomato stem rot caused by these Phoma species and compares symptoms with those of Didymella stem canker, caused by Didymella lycopersici (asexual stage Boeremia lycopersici; previously Phoma lycopersici).

Phoma destructiva is responsible for leaf spots and fruit rots on tomato in many countries and has been recorded occasionally on tomato in the UK.

In this factsheet you will find information on the following: 

  • Symptoms of Phoma stem rot and  Didymella stem canker 
  • Phoma labilis stem rot and spot – biology and control 
  • Control options and plant protection products
  • Hygiene 

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