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

Santavery root disease

The causal organism Fusarium oxysporum

Classification:
Class- Deuteromycotina,
Order- Moniliales,
Family- Tuberculaiaceae.

Symptoms

• Sudden wilting, yellowing of leaves followed by defoliation and death of aerial parts.
• Roots show, brown to pinkish discoloration of the inner portion in transverse section. Scrapping the bark of the stem near ground level shows internal discoloration.
Favourable factors

• Low or high soil temperature, poor physical conditions of soil, moisture stress, inadequate shade & wounds on the roots are the predisposing factors for disease development.
Management

• Uproot the dead dying plants & destroy.
• Treat affected blocks with compost manure @ 10-15 kg per plant to improve the soil fertility.
• Drench the soil with carbendazim @ (0.1%) or carboxin @ (0.3%) in the initial stage of the disease.
• Maintain adequate overhead shade.
• Apply balanced nutrients & follow good cultural operations to maintain the vigour of the plants.
• Lime the soil to raise its PH, if highly acidic.