In this article we will discuss about the powdery mildew of peas caused by fungi. Introduction to the Powdery Mildew of Peas: The powdery mildew of peas is worldwide in occurrence causing serious losses to the crop. The disease is considered to be much more serious than the downy mildew of peas. Physiologic races of the fungus attack beans, urd, [...]
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 [...]
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, [...]