Protection Methods

- During cultivation

 
Knowing the biology of these bacteria, one should avoid sprinkler irrigation whenever  possible, or implement it rather in the morning than in the evening, so that the plants have time to dry during the day.

When plants are grown in sheltered nurseries they should be ventilated as much as possible in order to reduce the ambient moisture content and prevent the presence of water on plants. Diseased plants should be removed from the shelter and destroyed.

No product is authorised for use to control this pathogen in France.
 
 
- Next crop
 
In general it is recommended to change the location of nurseries or to consider their disinfection if they are kept in the same place from one year to another, especially when infections and disease  have occurred the year before at this stage of culture. Steam disinfection seems to give good results. 
 
A balanced fertiliser program should be used and excess nitrogen use should be avoided because it leads to the production of exuberant plants with succulent tissues more susceptible to the bacteria.
 
Resistant tobacco varieties do exist. The resistance initially used, obtained from Nicotiana longiflora, seems to distinguish the two bacteria. Indeed, it is effective against Pseudomonas syringae pv. tabaci, but provides various control against Pseudomonas syringae pv. angulata. This resistance has been bypassed in the U.S. by race 1 of Pseudomonas syringae pv. tabaci. This race  was subsequently introduced in Zimbabwe through contaminated seeds. To control  this race, breeders have used a dominant monogenic resistance from Nicotiana rustica cv. Brasilia. This gene shows higher resistance than the previous one with respect to Pseudomonas syringae pv. angulata and it also controls the race 1 of Pseudomonas syringae pv. tabaci.