What are the type of allelopathy?

There are three main types of allelopathy:

1. Autotoxicity or self-inhibition: This occurs when a plant produces chemicals that inhibit its own growth or germination. For example, some plants release allelopathic chemicals into the soil that prevent their own seeds from germinating or growing.

2. Interallelopathy: This occurs when a plant produces chemicals that inhibit the growth or germination of other plants. For example, some plants release allelopathic chemicals into the air or soil that can inhibit the growth of neighbouring plants.

3. Synergistic allelopathy: This occurs when the allelopathic effects of two or more plants interact with each other to produce a greater inhibitory effect than either plant would produce on its own. For example, some plants release allelopathic chemicals that can stimulate the release of allelopathic chemicals from other plants, resulting in a synergistic effect that can greatly inhibit the growth of other plants.