Bean yellow mosaic virus
Symptom:
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Mosaic viruses in which the leaves show sharply defined patches of unusual coloration may occur in beans.
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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.
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It is not possible to distinguish between the viruses based on symptoms alone.
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Laboratory tests (ELISA) are required to identify the viruses and confirm that they may be responsible for the mosaic symptoms.
Management:
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There are no recommended chemical controls for these problems.
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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.
Source-
- TamilNadu Agritech Portal
