In this article we will discuss about the meaning and classification of symptoms. Meaning of Symptoms: The manifestation of a disease is known as symptom. After successful penetration, the pathogen colonises on the host, as a result many structural and physiological changes occur within the host, and finally the expression of the disease i.e., the symptom develops. The sympÂtom may [...]
The below mentioned article provides notes on plant pathology. Plant pathology is a branch of botany. It deals with the diseases of plants, helps to mainÂtain good health of plants, and also take proper steps to increase the productivity. Plant diseases caused disasters like famine in Ireland (1845- 1846) and Bengal (1943) by late blight disease of potato (C.O. Phytophthora [...]
The below mentioned article provides a study note on inoculum. During unfavourable conditions like sudden change in temperature (high or low), effect of poisonous gas, disturbance of soil moisture relation etc., pathogen may occur inside the perennating organ or organs. With the onset of favourable condition, it becomes active and causes disease. The portion of the pathogen responsible for infection [...]