Carrot yellows (Phytoplasma)

Symptoms

• The affected leaves become yellow accompanied by vein clearing.
• Dormant buds in the crown grow out into chlorotic shoots, which give a withers broom appearance on the top.
• Size and quality of roots are reduced and malformed.
• The internal texture of roots show marked colour changes causing reduction in market value of carrots for fresh market as well as for processing.
• Roots of infected plants have a bitter taste with astringent flavour.

Management

• Rogue out the infected plants, collateral hosts and other weeds.

Chemical Control

Extremely Toxic

Highly Toxic

Moderately Toxic

Slightly Toxic