Banana Bract Virus
- The disease is characterised by the presence of spindle shaped pinkish to reddish streaks on pseudostem, midrib and peduncle
- Typical mosaic and spindle shaped mild mosaic streaks on bracts, peduncle and fingers also observed
- Suckers exhibit unusual reddish brown streaks at emergence and separation of leaf sheath from central axis
- Clustering of leaves at the crown with a travellers palm appearance, elongated peduncle and half filled hands are its characteristic symptom.
Identification of pathogen:
- The disease is caused by a virus belonging to potyvirus group. The virions are flexuous filamentous
- The virus is transmitted by aphid vectors. The virus is primarily spread through infected suckers. In the field, aphids vectors such as Aphis goosypii, and Rhopalosiphum maidis transmits the disease.
- The diseased plants should be removed as and when noticed to avoid the spread of the disease
- Disease free planting materials should be used for new planting
- The banana gardens should be kept free from weeds
- Weeds in the nearby areas should be removed as the virus survives in them in off-season
- Early detection by regular inspection of planting and eradication of diseased plants from the field as soon as they are noticed
- Control of insect vector by spraying Phosphomidon at 1 ml per litre or Methyl Demeton at 2 ml per litre or Monocrotophos at 1ml per litre.
- TamilNadu Agritech Portal