The Seasonally Integrated Flux (SIF) of N 2 O emission during pulse cultivation in Rabi season (Season-I: December to April) in rain-fed uplands of Orissa, was found to be 17.7±0.07, 18.7±0.16 and 43.3±0.14gha −1 for horse gram (HG), black gram (BG) and green gram (GG) respectively. During the subsequent Rabi season (Season-II), the SIF of N 2 O for BG and GG cultivated in the same fields were 20.9±0.24 and 38.0±0.42gha −1 respectively. Similarly SIF values during rice cultivation with different cultivars have also been calculated to be in the range −20.05±0.33 to 21.98±0.29. Statistical analysis showed good correlation of N 2 O emission with climatic and soil parameters like temperature, nutrient N and organic matter in soil during pulse cultivation. Multivariate analysis was carried out to factorize the results obtained. Using student ‘t’ test, the N 2 O emission was observed to be similar for two consecutive Rabi seasons for pulses like BG and GG.