changing to a darker color
- The only difference is blackening of the stems in case in Erwinia chrysanthemi infections.
- 915 ml of gas bubbled through 25 ml of ammoniacal silver nitrate reagent to which has been added 3 ml of ammonia must not cause clouding or blackening of this solution
- In particular Erwinia chrysanthemi can cause leaf symptoms and wilt that is very similar to symptoms of C. m. sepedonicus. The only difference is blackening of the stems in case in Erwinia chrysanthemi infections.