Rice (Oryza sativa L.) is the most important and extensively cultivated cereal crops in Bangladesh. Rice
has been considered as staple food of the Bangladeshi people about 80% of the total cultivated lands in
Bangladesh are used for rice cultivation and its total production is 31.98 million metric tons (BBS,
2011).Rice supplies more than 70% of calories (Khush, 2008) and more than 50% proteins (Islam, 2009)
as well as contributes 95% of the cereals consumed in Bangladesh.