Figure 4. Effect of the root exudates collected from own-root bottle gourd, grafted-root watermelon and own-root watermelon on FON growth.

Bars represent standard error for three replicates. Each treatment had three replications. Bars represent standard error for three replicates. Growth impact index = (The growth diameter in treatment – Control)/Control. The different letters represent the significance between pairs of mean values at P≤0.05 according to LSD test.