Md. Abdul Latif
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
T H Ansari
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
Q S A Jahan
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
Md Rejwan Bhuiyan
Senior Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
M H Hossain
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
Salim Mian
Senior Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
Anjuman Ara
Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
An investigation was carried out to assess disease status in diffeent eco-system of Bangladesh. The survey was conducted during T. Aman/14 and Boro/14-15 seasons in 7 different locations. In T. aman season, survey was carried out in different upazillas of Rangpur and Satkhira districts. During Boro, the survey was conducted in Gazipur, Rangpur, Satkhira, Barisal, Hobiganj and Comilla districts. Incidence and severity of the disease(s) were recorded following standard evaluation system.In T. aman season, BB, brown spot, false smut and sheath blight diseases were prominent in the surveyed areas in both the districts. Incidences of other diseases were insignificant. In different upazillas of Barisal and Jhalokathi districts, incidence of brown spot, blast, narrow brown leaf spot and bacterial leaf blight disease were recorded as 38-66%, 10-16%, 8-17% and 18-29%, respectively. Brown spot seems to be predominant in T. Aman season followed by blast and other diseases. In boro season, survey was carried out in Khulna, Bagerhat, Gopalgonj and Pirojpur district. In the surveyed areas bacterial blight (BB), neck blast, brown spot (BS), sheath blight and sheath rot diseases were observed. In the early season, around 25-30% seedlings of 50% seedbed were found infected with seedling blight in Gopalganj and Rajshahi. Incidence of seedling blight in the trays was severe wherever it was grown. Among the major diseases neck blast, BB and BS were found severe. Among the diseases neck blast, BB and BS were found severe. Neck blast disease was found prominent in BRRI dhan28 in Bagerhat district (Incidence 32% and Severity 4), whereas, BB was observed in local and hybrid varieties in Gopalgonj Sadar (incidence 70%, Severity 5). Brown spot was severe in Gopalgonj district (incidence 82%, severity 6) next to Bagerhat district (incidence 40%, severity 3). In Rangpur region, survey was conducted in Lalmonirhat and Rangpur sadar upazilla. Blast incidence was epidemic in nature in BRRI dhan28. Most of the early planted variety which flowered at the time of drizzle raining was affected much with blast (5-90% panicle, severity 3-9). Other varieties like BRRI dhan29, few hybrid varieties were also affected with blast (% leaf infection 10%, panicle infected 5-10%, severity 3). Other diseases like BB (5% leaf, severity 3-5). In Barisal region, bacterial leaf blight (BB) disease showed highest incidence along with greater severity scale (7) followed by blast, brown spot, and leaf scald recorded as 22-48%, 8-19%, 23-37% and 7-13%, respectively. Survey was carried out in three upazillas Habigonj, Baniachang and Nabiganj of Habiganj disrict. Irrespective of locations, overall incidence of narrow brown leaf spot was observed highest (44% leaf, severity 2) which was followed by brown spot (43%, severity 3) and bacterial blight (10% leaf, severity 3). The incidence of sheath blight and neck blast was 1.3% (severity 3.6) and 2.0% (severity 3). Bacterial blight and narrow brown leaf spot were found less.
Rice, Assessment, Disease, Eco-system.
All regional stations of BRRI
Pest Management
Annual report, 2014-15.
Report/Proceedings