Any harmful introduced infectious agent, organism, or condition that reduces a plant’s overall vitality, inhibits its growth, or limits the ability of the plant to survive and reproduce. Pathogens can be delivered in a multitude of different ways. These include bacteria, fungi, viruses, nematodes, oomycetes, and abiotic toxicities. There are severa [..]

An organism (generally a bacterium, virus or fungus) that causes disease in plants