Our isolate of M. roridum produced leaf spots within five days after inoculation. The first symptom developed three days after inoculation. The first symptom developed three days inoculation after inoculation. It took the form of a narrow brown band which spread from the point of inoculation to the leaf tip. Development of leaf symptoms slowed down after about one week and the disease spread to neighbouring plant after 5 to 6 weeks (Figure 1A).