Technical Terms in Plant Pathology
Epidemic Disease : If disease spread over large area and causing considerable loss to the crop plant. Eg: Guava Wilt, Apple Scab, Bacterial Blight of rice.
Endemic Disease: When disease is more or less constantly present from year to year in moderate to severe form in a particular part of a country or state is called endemic disease Eg; Early blight of Potato.
Pandemic: Epidemic is spread too many country many time at the continental level is called pandemic eg. Yellow rust of wheat.
Sporadic Disease: Occur at very irregular intervals and location. Eg: Greet ear disease of Bajra.
Compound interest Pathogen: When pathogen complete several life cycle in a crop season is called compound interest disease. Eg. Late blight of potato, Rice Blast, Wheat Rust, Major epidemic is caused by compound interest disease.
Simple or Single Interest Pathogen: When a pathogen complete only one life cycle in a crop season is called single interest disease. Eg: Lose smut of wheat
Symptoms : Host + Pathogen + Environment
Parasite: It is a living organism depending on host for its nutrition
Pathogenicity : This is the ability of pathogen to interfere with one or more function of the host and finally lead for the disease development.
Saprophyte : They are those who derive their nutrition from dad organic matter by enzymatic degradation of substrate.
Facultative parasite : Parasite which lives generally on the dead organic matter but occasionally becomes parasite. Eg. Mucor
