A field trial was conducted for two consecutive seasons (2013/14 and 2014/15), at the Gezira Research Station, Wad Medani, Sudan, to evaluate the agronomic performance of fourteen early maturing soybean germplasm introduced from USA, South Korea, Vietnam, Taiwan, and Croatia, under irrigated cropping environment. Highly significant differences (P ≤ 0.0001) were detected among the fourteen varieties for the eight agronomic traits in 2013/14 and 2014/15. Over the two seasons, Vietnam coll. 1 had the high grain yield (945 kg/ha), followed by N04-9859 (828 kg/ha) and AGS 327 (798 kg/ ha). Days to maturity ranged from 71 to 86 days over the two seasons. In both seasons, Vietnam coll. 1 and AGS 327 had the high agronomic performance in fodder yield, plant height and height to first pod. The agronomic performance of Vietnam coll. 1 and AGS 327 provides a clear example of the adaptability of tropical soybean germplasm to irrigated environments in Sudan comparing to other temperate germplams. The relative high yield of Vietnam coll. 1 and AGS 327 can be maximized by increasing plant populations/unit area. The unique soybean germplasm from the southern US and South Korea is valuable genetics resource for soybean germplasms at Agricultural Research Corporation (ARC), Sudan to broaden the genetic base of the released soybean varieties through introgression of potentially useful genes for drought-related and nutritional quality traits.

Introduction
 Materials and Methods
 Results and Discussion
 Conclusions
 적 요
 ACKNOWLEDGMENTS
 REFERENCES

• Seifeldin Elrayah Ibrahim(Gezira Research Station, Agricultural Research Corporation (ARC), Wad Medani, Sudan, 수단 농업연구청 게지라연구소) | 세이펠딘 엘라야 이브라힘
• Won Young Han(Crop Production Technology Research Division, National Institute of Crop Science, Rural Development Administration (RDA), 농촌진흥청 국립식량과학원 생산기술개발과) | 한원영 Corresponding author
• In Youl Baek(Crop Production Technology Research Division, National Institute of Crop Science, Rural Development Administration (RDA), 농촌진흥청 국립식량과학원 생산기술개발과) | 백인열
• Gyoung Rae Cho(International Technology Cooperation Center (ITCC), RDA, 농촌진흥청 기술협력국 국제기술협력과) | 조경래