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New orchardgrass(Dactylis glomerata L.) variety named as "Jangbeol 101" was developed by the National Livestock Research Institute(NLRI) in 2002. To develope the new variety of orchardgras, 5 superior clones were selected and polycrossed for seed production. Synthetic seeds were examined on the agronomic growth characteristics and forage production at Suwon from 1995 to 1998, and regional trials were conducted in Suwon, Namwon and Pyungchang from 1999 to 2002 and Jeju from 2000 to 2002, respectively. "Jangbeol 101" showed semi-erect growth habit in fall and spring and medium type in length of flag leaf and upper internode. Plant height of "Jangbeol 101" was short compared to that of standard variety, "Ambassador" and heading date was delayed about 2 days as 14th May compared to Ambassador. Characters such as winter hardiness, regrowth, moisture tolerance, disease resistance of "Jangbeol 101" were stronger or better than those of Ambassador. "Jangbeol 101" showed 9% higher dry matter yield as 12,374 kg/ha compared to Amabassador. Nutritive value was appeared to be similar in both varieties.