Figure 2. Growth of necrotic lesions caused by P. palmivora on
para rubber leaves, with various chitosan treatments
compared to control (a). Growth curves of necrotic lesion
diameters (b) on para rubber leaves, for the various
treatment groups. Actual treatments applied 0.5, 1 and 2
mg/ml chitosan, while 0.05% acetic acid was used as
control.