1.When infection takes place through contaminated seed rhizomes, sprouts fail to grow resulting in pre-emergence damping off
2.If the disease strikes after sprouting it manifests as a translucent brown lesion at collar region and later becomes water soaked and soft, extends to whole shoots
3.Infected plants can be easily pulled out
4.Leaves turn to pale yellow wither and dry up
5.The spear leaf and young upper leaves also wither and the entire plant dies
6.Soft rot extends from collar region to rhizomes which initially become discoloured and gradually decompose, forming a watery mass of putrifying tissues enclosed by tough skin
7.The fibrovascular strands are rarely affected. Roots arising from affected rhizome rot and soften. Rotting is also noticed in rhizomes collected from infected crop during storage

1.Crop rotation with non-hosts
2.Grow turmeric in light soils with good drainage
3.Use disease free rhizomes for planting
4.Rhizomes should be dipped in Metalaxyl + Mancozeb (Ridomil MZ 72) 2.5g/l for 40 minutes before planting to reduce seed rhizome borne infection
5.Drench the soil at root region with Bordeaux mixture 1% or Copper oxychloride 0.5% g or Metalaxyl + Mancozeb (Ridomil MZ 72) 2.5g/l in the initial stages of the disease
6.Control the Mimegralla insects by insecticide application as spray and baits

1.The disease is common during monsoon months
2.Initially disease appears as small, yellowish oval to elongated spots on the leaves measuring 0.5 to 1 mm
3.The spots enlarge; turn to white and papery at the centre with dark brown margin surrounded by a yellow halo
4.Spots are usually isolated but under humid conditions they coalesce with one another developing towards margin forming a big lesion
5.Black minute pycnidia develop in the white papery centre of the spots which is conspicuous in the later stages of the disease

1.Growing zinger in partial shade reduces the disease incidence
2.Spray Mancozeb 0.25% or Copper oxychloride 0.25% during monsoon