HomeInternational Rice Research Notesvol. 27 no. 2 (2002)

The Occurrence of Bunt of Rice in Bangladesh

I. Hossain | M. Z. Rahman | G. A. Fakir

Discipline: Agriculture, Socioeconomics

 

Abstract:

Bunt of rice is caused by Tilletia barclayana (Bref.) Sacc. and Syd. The status of bunt at three selected sites in the northern part of Bangladesh–Bogra, Rajshahi, and Rangpur–was studied over 2 y (1999 and 2000). At each site, four upazillas (administration units), with one village per upazilla, were selected. Twenty farmers were randomly selected from each village. Just after harvest, farmers’ seeds of all varieties were collected and brought to the laboratory. Thousands of seeds per sample (80 samples location–1 each year) were tested. Rice seeds of 1999 boro and 2000 aman were investigated. The varieties/cultivars of rice were BR1, BR2, BR9, BR10, BR11, BR14, BR16, BR20, BR22, BR26, BR28, BR29, BR30, IR50, China, Iraatom-24, Pajam, Pariza-76, BRP, Pancahabati, Type, Tipea, Khatobada, Sarna, Gocha, Aman, P. Kaila, and 532. Collected seeds were tested according to detection methods described by Agarwal and Srivastava (1985). Moreover, collected seeds were categorized into different grades 0 to 5, where 0 = no infection, 1 = up to 10% area of the seed infected, 2 = 11–25% area, 3 = 26–50% area, 4 = 51–75% area, and 5 = >75% area. The study followed a completely randomized design.