Cookies on Plantwise Knowledge Bank

Like most websites we use cookies. This is to ensure that we give you the best experience possible.


Continuing to use means you agree to our use of cookies. If you would like to, you can learn more about the cookies we use.

Plantwise Knowledge Bank

Your search results


Management of Rice blast

Pyricularia oryza, Magnaporthe grisea
  • Deep ploughing with organic matter
  • Use of disease/spot free seed
  • Avoid the use of exessive N and apply balanced fertilizer
  • Weed control to remove alternate host plants
  • Regular visits and observation of the rice plants immediately if low night and high day temperature, drizzly rain, morning dew and windy weather
  • Look for angular shaped lesions (eye shaped) with pointed ends on the leaves
  • Look for infected nodes, panicle and neck
  • Observe alternative host grasses for symptoms
  • Late wet and dry season is favorable
  • Sandy loam soil and dry condition also favour the disease
  • Spraying of MOP (@6g/L) and elemental sulphur (@6g/L) during PI-boot stage
  • Split application of nitrogen fertilizer do not exceed recommended dose
  • Keep soil moist and apply irrigation during drought
  • Apply fungicides during early morning and or late afternoon
  • Use mask during spraying of pesticides
  • Don’t apply fungicides high concentrations of chemical or more than two times
  • Application of fungicide during boot and after flowering is recommended Spray premixed Tebuconazole+Trifloxystrobin usually @ 0.5g/L of water
  • Trifloxystrobin- WHO U , FRAC 11; Tebuconazole- WHO II , FRAC 3 (Use two sprays 7-10 day intervals apart)
  • Spraying of powder formulation of Tricyclazole @ 0.75g/L of water
  • WHO II FRAC 16.1 (Use two sprays 7-10 day intervals apart)
  • Spraying premixed Tricyclazole and Propiconazole- @ 2-3 ml/L water
  • Tricyclazole- WHOII, FRAC 16.1; Propiconazole- WHO II, FRAC 3 (Use two sprays 7-10 day intervals apart)
AUTHOR(S): Dr. Tahmid Hossain Ansari (BRRI), Prof. Dr. Md. Razzab Ali (SAU), Md. Azhar Ali Mondal (DAE), Suvash Chandra Gayen (DAE)

PRODUCED BY: Plantwise