Solcielo lawrencia;112204 said:There is an assumption that the lower the concentrations, the less of an effect there is. However, it is possible that the concentration of allelochemicals are so small that they go undetected by the target plant and thus, the target plant cannot mount an immune response. This allows the allelochemicals to enter the plant and inhibit growth.
So far, from what I've read, some tests have used massive amounts of allelochemicals by the blender method to extract toxins. Has there been any test that uses far smaller amounts in the ppb range or smaller to see if there is an effect?