Yellow leaf disease: Phytoplasma

Symptom:

• Yellowing of tips of leaflets in 2 or 3 leaves of outermost whorl.
• Brown necrotic streaks run parallel to veins in unfolded leaves.
• The yellowing extends to the middle of the lamina. Tips of the chlorotic leaves dry up. In advanced stage all the leaves become yellow.
• Finally the crown leaves fall off leaving of a bare trunk. Root tips turn black and gradually rot.

Yellowing of tips	Yellowing of leaves	Infected trees

Management:

• Maintain trees in seed vigour.
• Growing resistant varieties like true Mangala and south Kanara
• Application of potassium and magnesium more than the recommended level.

Image Source:

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