Bean yellow mosaic virus
Mosaic viruses in which the leaves show sharply defined patches of unusual coloration may occur in beans.
The causal agents of these symptoms may be a nutrient imbalance or herbicide injury or result from infection by one of the several viruses. Southern peas can be infected by Cowpea aphid-borne mosaic virus,Bean common mosaic virus and several others.
It is not possible to distinguish between the viruses based on symptoms alone.
Laboratory tests (ELISA) are required to identify the viruses and confirm that they may be responsible for the mosaic symptoms.
There are no recommended chemical controls for these problems.
Many of these viruses are transmitted by aphids and are also transmitted through seed. For this reason, it is unwise to save seeds from year to year.
- TamilNadu Agritech Portal