Diseases of fruit plantation medicinal and aromatic crops (2+1)

Mosaic

Causal organism : Mosaic virus.
Symptoms

• Young growing leaves & inflorescence shows mosaic symptoms.
• Leaves become yellow from the veins.
• Later leaves roll & falls off.
• Primary .Sources of Inoculum: Affected planting material.
• Secondary .Sources of Inoculum: Viruliferous vector
Epidemiology

• Severe in summer due to high insect vector population.
Management

• Removal of alternate weed hosts, crop residues around main plot.
• Select healthy planting material.
• Application of less N and more K induces disease resistance.
• Spray systemic insecticide, dimethoate 0.2%, imidacloprid 0.05%.