Diseases of Fruit Plantation Medicinal and Aromatic Crops

Stem canker

Causal organism: Phytophthora palmivora.
Symptom

• Reddish brown liquid oozes out from the lesion which later become dry and form a rusty deposit.
• Tissues beneath the lesion appear as reddish brown
• The cankers girdle the main stem or branches & the pods in them wilt the leaves are discoloured.
Mode of spread

• The infection spreads from peduncle and then to the cushion and bark .


Management

• Infected pod should be removed & destroyed.
• Disease can be controlled in the early stage by excision of diseased bark followed by wound dressing with Bordeaux paste.