To improve rice productivity in Myanmar, we evaluated two Korean rice cultivars and one Myanmar rice cultivar comprised of planting density and fertilization amount in three experiments from rainy season 2014 to dry and rainy season 2015. In the planting density experiment during wet season 2014, the rice yield in ‘Yeongpoong’ and ‘Shwethweyin’ cultivars increased considerably under high planting density but there was no significant differences in rice yield of ‘Dasan 2’ cultivar between planting density treatment. In dry season cultivation 2015, rice yield increased considerably under high planting density at all experimental cultivars. In wet season cultivation 2015, the rice yield of ‘Dasan 2’ and ‘Yeongpoong’ cultivars was significantly increased except ‘Shwethweyin’ cultivar. The yield of ‘Dasan 2’ cultivar was high in rainy season but there was much variation in yield among the planting density treatment and cultivation years. The yield of ‘Yeongpoong’ cultivar was higher in wet season cultivation than dry season cultivation and significantly increased with planting density. In the fertilization amount experiment, the yield of ‘Dasan 2’ cultivar cultivated in wet season 2014 was increased considerably with increasing fertilization amount but there was no difference between ‘Yeongpoong’ and ‘Shwethweyin’ cultivar. The yield of ‘Yeongpoong’ cultivar cultivated in dry and wet season 2015 was increased significantly with increasing fertilization amount. The Myanmar rice cultivar ‘Shwethweyin’ was no difference in yield with increasing fertilization amount. The yield of Korea cultivars ‘Dasan 2’ and ‘Yeongpoong’ was increased significantly with increasing fertilization amount but there was some yearly and seasonal variation. From the above results, if cultivation techniques would be applied in Myanmar, it is possible to raise productivity by using Korean rice cultivars.

To select appropriate Korean varieties in Myanmar, a serial experiments using rice varieties developed in Korea were conducted for 2 years, 2014 and 2015. Among the yield components, panicle number per hill of Shwe Thwe Yin, Myanmar variety, was 14, 19, 17 for 2014 dry season, 2014 wet season and 2015 dry season, respectively, which are 6, 1.3 and 5 panicles more than that of Korean varieties. The grain number per panicle, the ripened grain rate, 1,000 grain weight and yield of Korean rice varieties higher than that of Shwe Thwe Yin, Myanmar variety, at 2014 dry season and wet season. However, grain numbers per panicle, ripened grain rate of Shwe Thwe Yin were similar to that of Korean varieties, the yield of Myanmar variety was higher than yield of Korean varieties, at 2015 dry season. And to study the wide area adoptability, korean rice varieties and Shwe Thwe Yin were tested for 2 years, 2014, 2015 and 3 regions, the yield of Hanareum, Hangangchal 1 and Dasan 2 were higher than the yield of Shwe Thwe Yin and the regional variation of these korean varieties lower than that of Shwe Thwe Yin at 2014 wet season. Dasan 2 and Hangangchal 1 were selected as promising rice varieties in Myanmar.