. The beneficial effect can be called positive allelopathy, the detrimental effect negative allelopathy. The process, by which a plant acquires more of the available resources (such as nutrients, water or light) from the environment without any chemical action on the surrounding plants is called resource competition. This process isn't negative allelopathy, but both processes can act together to enhance the survival rate of the plant species. Although allelopathic science is a relatively new fi… (More on Allelopathy)