Hiunde (Boro) rice has not been popularized due to least attention given to this crop in Nepal. Inorder to estimate the production function of this crop, a field survey in Morang district during2002/2003 was carried out using a semi-structured questionnaire. The primary information wascollected through face to face interview. The result of the empirical model of Cobb-Douglasproduction function revealed the model significant at 1% level and defined 95% variation inHiunde rice production due to variation in independent variables included in the model. Thecoefficient of area, nitrogen, phosphorous, and tractor hour were found significant at 1% levelwhile the dummy for more than 10 times of irrigation was significant at 5% level and up to 10times of irrigation and potash was significant at 10% level. The effect of human and bullocklabor was found non-significant. Among the sampled farmers the average cropping intensity was194% and average yield of Hiunde rice was 4802.50 kg/ha. On an average 131 kg of nitrogen,phosphorous and potash was applied for one ha and 15 irrigations in average. The net benefitfrom Hiunde rice was found to be Rs. 14507.41/ha with 1.73 benefit cost ratio. About 31% costwas incurred in land preparation and transplanting which was highest among the operations. Itwas followed by the costs incurred in fertilizers and agrochemicals which counted 23%.Key words: Estimate; Hiunde rice; production functionDOI: 10.3126/narj.v7i0.1874Nepal Agriculture Research Journal Vol.7 2006 pp.88-97