Broadly defined, disease is any physiological abnormality or significant
disruption in the normal health of a plant that changes its appearance or function. Due
to viruses, bacteria or fungi and favored by certain environmental conditions (nutrient
deficiency, soil degradation, water problems, climate change, etc.) and certain pests
(sometimes playing a role of vector), plant diseases are sources of considerable
economic losses for agriculture and forestry, and as such studied by plant pathology or
phytopathology.
Keywords: Controlling methods, Diagnosis, Economic impact, Non parasitic
plant disease, Parasitic plant disease, Symptoms.
