What is biological control?

Biological control is a natural process to control the size of animal, microorganism or plant populations. Biological control is based on the knowledge of inharmonious (negative) ecological interactions among species. Using such knowledge a parasite, competitor or predator species is introduced in an ecosystem in order to attain reduction of the population of another species with which it has inharmonious ecological interaction. The biological control shows the benefit of substituting the use of pesticides and other toxic chemical products in the control of plagues and diseases. It though should be employed with caution under serious previous study to avoid harmful ecological disequilibrium.