Aster Yellows Phytoplasma
- Numerous hairy secondary roots develop in lines along the root
- Older leaves first yellow, then turn a reddish-purple
- Leaves may become twisted
- New leaves are small, weak, pale and clustered in a short bunchy top
- Carrot has a bitter taste and may be off color
- Infected plants are scattered randomly through the field, and may flower in year one
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