In this article we will discuss about the wilt of arhar caused by deuteromycetes. Host: Cajanus Cajan Pathogen: Fusarium oxysporum f.udum Introduction to the Wilt of Arhar: The wilt disease of arhar is a most severe threat to the arhar producing states in the country such as U.P., M.P., Bihar and in parts of Bombay. Symptoms of Wilt Disease: The [...]
In this article we will discuss about the covered smut of barley caused by basidiomycetes. Host: Hordeurn vulgare Pathogen: UstHago hordei Introduction to the Covered Smut of Barley: The disease is of common occurrence in the barley growing tracts of India. It causes considerable damage in the Punjab, Uttar Pradesh, Madhya Pradesh and certain parts of Bihar. Symptoms of Covered [...]
The following points highlight the three main stages of host pathogen relationship. The stages are: 1. Pre-Penetration Stage 2. Penetration Stage 3. Post-Penetration Stage. 1. Pre-Penetration Stage: During pre-penetration stage the pathogen (inoculum) on arrival on the host surface interacts sharply with the surrounding environment and host itself. The enÂvironment which is an aggregate of all external conditions including temperature, [...]