In this article we will discuss about the general symptoms of plant diseases. The changes in the host plant which serve to recognise the disease are called the signs and symptoms of the disease. The sign of a disease is the external appearance of some portion of the pathogen of the host. It may be some portion of the [...]
In this article we will discuss about the leaf curl of peaches caused by fungi. Introduction to the Leaf Curl of Peaches: Although Peach leaf curl disease is worldwide in distribution, it occurs more predominantly in Europe and North America. In India, the disease is prevalent in peach orchards of Kumaon, Kulu and other parts of the Sub- Himalayan range. [...]
In this article we will discuss about the mycoplasmal diseases of potato. (a) Purple Top Roll: The disease occurs particularly in North America but reported for the first time in India which can cause 15 to 20% of loss of Potato yield. Symptoms: The disease is characterised by rolling and purple or pink coloration of the basal part of leaflets [...]