Rice is the most important
and prestigious food crop of Nepal. It is grown in a diverse
environment ranging from tropical plains to foot of the
mountain at highest elevation (3050 masl) in Chhumchure,
Jumla. Nepal is considered as one of the origin center of
rice. It is one of the most important cereal crops in Nepal.
Rice is grown in 1440 thousand ha and the productivity is
2.56 t/ha. It contributes nearly 20 per cent to the agricultural
gross domestic product and provides more than 50 per cent
of the total calorie requirement of the Nepalese people.
Productivity increment is the only way to increase the production.
The promising technologies generated by agricultural research
play the pivotal role to increase productivity. Nepal has
released fifty five (55) rice varieties with full package
of growing practices in the last 40 years. The coverage
by improved varieties is 85 percent of the total rice cultivated
land. Popularly cultivated improved varieties are Radha-4,
Radha-12, Masuli, Sabitri, CH-45, Bindeswori in terai, Khumal-4,
Khumal-11, Taichung-176, Chainung-242 in Mid-hills and Chandannath-3