Powdery Mildew of Mango

Importance:

  • Occurs regularly in Pakistan.
  • Incidence recorded up to 100% in some orchards

Etiology:

Causal organism: Oidium mangiferae

Order: Erysiphales

Family: Erysiphaceae

Symptoms:

  • Small white spots on all parts of inflorescence*( the complete flower head of a plant including stalks, bracts, and flowers), leaves & fruits
  • In severe cases, inflorescence completely covered by mildew (growth of fungus) & become blackened
  • Young leaves curl, distorted (Twisted) & newly set fruits drop off

Disease cycle:

  • Fungus survive on malformed*(mishappen)/off season panicles & mildew leaves

Epidemiology:

  • Max temp 25-30°C
  • Min temp 10-16°C
  • 75-91 % RH

Management:

  • Cut & burn infected inflorescence in Sep & Oct
  • 3 spray of Benomyl (0.2%), Bavistin (0.1%) at flowering (A- pre bloom, B- full bloom, C- after fruit setting)
  • A bacterium Bacillus subtilis use as biological control

Download Files

powdery-mildew-of-mango.pptx (1.98 MB )