Diseases of Fruit Plantation Medicinal and Aromatic Crops

Leaf fall and Die back

Causal organisms: Colletotrichum sp.
Symptoms

• Younger leaves dries up & branches dries from tip downwards.
• In sever cases entire plant may die.
Etiology

• Septate mycelia, Inter & intracellular haustoria.
• Sexual spores: Ascospores.
• Asexual spores: Conidia
• Primary source of inoculum: Dormant mycelia.
• Secondary source of inoculum: Air & soil borne conidia.
Epidemiology

• Temp: 30-32⁰C.
• R h: 90-95 %.
• Susceptible host.
Management

• Use healthy planting material.
• Maintain proper spacing: 60 x 45 cm.
• Cut & burn the affected portion.
• Chemicals: Carbendazim 0.1% as soil drenching.