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Carrot > Root > Hairy root
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Aster yellows
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
- More information on Aster Yellows
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Northern root knot nematode
Meloidogyne hapla
- Many fibrous roots may be present
- Tap root is stunted, deformed, or forked
- Many small round to irregular lumps and swellings can be found on both the tap root and fibrous roots
- In severely infected plants, carrot tops may be stunted, yellow, and wilt during the day
- More information on Northern Root Knot Nematode
