Newspaper is removed when seeds germinate. Plants are rated as susceptible or resistant 5-7 days after inoculation. Susceptible plants wilt at point of inoculation. The wilt progresses along the stem. Resistant plants do not wilt.
Susceptible plants die.
If a desirable plant is presumed to be susceptible, a cutting can be inoculated to check disease reaction. Susceptible plants inoculated at the leaf tip may usually be saved by excising the inoculated leaf at the junction of the petiole and stem as soon as wilting appears.