Plant pathology is study of the living organisms and environmental factors which cause disease in plants, as well as the mechanisms through which these factors cause disease in plants, the interaction between the disease-causing agents and diseased plants, and the methods for preventing disease, reducing damage it causes, or attempting to control disease either before it develops in a plant. The majority of plant diseases are caused by biotic organisms. The majority of plant diseases are triggered by fungus, bacteria, phytoplasmas, viruses, viroids, nematodes, and parasitic higher plants. Non-infectious factors are what produce abiotic disorders. Disorders may have an almost infinite number of causes, although the majority of them are caused by factors. Factors include air pollution, high winds, hail, incorrect cultural practices, and extremes of temperature, humidity, light, nutrients, pesticides, alkalinity/alkalinity. saltiness, soil texture, and pesticide toxicity. The damage resulting from insect assaults and competition from noxious plants (weeds) are additional problems. Plant pathology studies often do not include plant damage from humans, other animals, or insects.