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Plant Pathology Introduction

Because of the reliance of humans on plants for food, fibres and other resources, understanding plant diseases and their control is of vital importance to our survival. Plant disease epidemics can cause famines, eliminate a thriving industry or poison animals and humans. Plant diseases are the result of infection by other organisms that adversely affect the growth, physiological functioning and productivity of a plant, manifesting outwardly as visible symptoms. Parasitic organisms that cause disease are called pathogens.

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