Antagonism (phytopathology)

In phytopathology, antagonism refers to the action of any organism that suppress or interfere the normal growth and activity of a plant pathogen, such as bacteria or fungi.

this organisms can be used for pest control and are reffered to as ``Biological Control Agents´´. they may be predators, parasites, parasitoides or pathogens which attacks harmful insect, weed or plant disease.

'Antagonism - Mechanism' antibiosis example- enzymes, toxins, antibiotics Direct parasitism example- biotrophic or necrotrophic competition example- for nutrients Induced resistance(indirect)