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


Brown leaf spot on rice

Cochliobolus miyabeanus (Bipolaris oryzae)
  • Pre-soak seeds in cold water for 8 hours, then hot water (53-54°C) for 10-12 minutes before planting.
  • Only transplant seedlings which have no brown spot symptoms.
  • Destroy infected rice crop by burning soon after harvest.
  • Control of weeds during and post-season.
  • Addition of calcium and potassium in soil to boost disease resistance.
  • Avoid irrigation from infected to uninfected plots.
  • Monitor crops weekly during growth season. Observe for small, brown, circular lesions on the leaves, sheaths, glumes and panicles. As lesions age they become oval, light brown, grey centre with a red-brown margin.
  • As soon as symptoms are observed, undertake direct control measures.
  • Remove infected plants and burn.

PRODUCED BY: Plantwise

©CAB International. Published under a CC-BY-SA 4.0 licence.