Figure 3. The % inhibition of the root exudates of the three rice cultivars (PI and TN, allelopathic cultivars PI312777 and Taichung Native1; Le, non-allelopathic cultivar Lemont) at 3–6 leaf stages.

Significant differences (P < 0.05) between rice cultivars at the same leaf stage were indicated by different lowercases, according to Tukey’s honestly test.