Around 1% of Bangladesh’s annual rice production, totaling 4 crore tonnes, is damaged by blast diseases due to the absence of resistant varieties, according to the Bangladesh Rice Research Institute (BRRI). The institute is currently conducting experimental cultivation of a new rice variety resistant to blast diseases during the ongoing Boro season. If successful, the variety will undergo final approval from the National Seed Board.
Blast diseases pose a threat to rice and wheat crops, and while wheat has seen mitigated damage through tolerant varieties, rice remains vulnerable. The peak incidence of blast diseases occurred between 2015 and 2017, attributed to climate change effects, with ongoing annual damage affecting various rice varieties. The highest incidence is observed in Cumilla, Gazipur, and Rangpur regions, impacting less than 1% of national rice production but causing devastating effects in severely affected areas.