• MEANING AND CAUSES OF DISEASES OF CROPS
    AGRICULTURAL SCIENCE

    MEANING AND CAUSES OF DISEASES OF CROPS

    A plant disease may be defined as a departure or deviation of the plant from the normal state of health, presenting marked symptoms or outward visible signs. In other words, disease is an unfavourable condition caused either by the pathogens present within a living organism or by nutritional deficiency. It usually results in physiological and anatomical abnormalities expressed in characteristic symptoms. The harmful effects of a disease to the plant or to any of its parts and products generally result in the reduction of the economic value of the plant.   Causes of Diseases The primary causes of disease can be classified into two groups – pathogens and physiological factors.…

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