Best Viewed in Mozilla Firefox, Google Chrome

Mechanism of damage of Rice Blast

PrintPrintSend to friendSend to friend

1. Disease cycle begins when conidia are deposited on rice leaves and germinate by producing a germ tube and an appressorium. 

2. Under favorable conditions, symptoms within 4-5 days of infection.

3. Conidia are produced on the lesions 6-7 days after infection. The rate of sporulation increases with increase in relative humidity (RH). 

4. A typical leaf blast lesion produces 2000-6000 conidia each day for about 14 days. Most of the spores are produced and released during night, particularly between 2:00 and 6:00 a.m.

5. Longer the dew period, more spores are released. These conidia are mostly disseminated by means of wind. 

 

File Courtesy: 
Rice Blast Disease and its Management ( Dr. Krishnaveni)
Copy rights | Disclaimer | RKMP Policies