Fig. 2. The most significant inhibition was observed on the plates with 0.5% GSE, with only 34.9% of the length of the mycelial growth compared with the control, but rel- atively sparse hyphae. The combination of 0.1% GSE and 1% chitosan also achieved a good result, reducing the mycelium growth to 3.84 cm in length, as compared to 8.4 cm for the control. However, chitosan alone was not as effective as those formulae containing GSE, which resulted in a radial growth reduction of 36.1%, indicating an apparent combined anti fungal effect of chitosan and GSE. The positive control TBZ also h a good inhibitory effect, with radial growth of 4.18 cm.