A new variety of Alfalfa (Medicago sativa L.), named 'Alfaking' was developed between 2015 and 2023 at the Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan, Republic of Korea. The variety was produced through artificial hybridization, with ‘Paravivo’ serving as the maternal line and ‘WL514’ as the paternal line. ‘Alfaking’ underwent field tests across four regions (Cheonan, Pyeongchang, Jeongeup, and Jinju) to evaluate its agronomic characteristics and forage production over two years (2022-2023). The dry matter yield of ‘Alfaking’ reached 22,516 kg/ha, which is 11% higher than the control variety, ‘Vernal.’ ‘Alfaking’ exhibited 2.1% higher crude protein content than ‘Vernal’ in forage nutritive value. The development of this new alfalfa variety, which exhibits excellent adaptability to challenging environmental conditions, is expected to enhance forage cultivation and productivity in Korea.

Ⅰ. INTRODUCTION
Ⅱ. MATERIALS AND METHODS
    1. Selection of superior individuals and creation ofcross combinations
    2. Investigation of inherent characteristics of ‘Alfaking’
    3. Regional adaptability trials
    4. Evaluation of forage nutritive value
    5. Statistical analysis
Ⅲ. RESULTS AND DISCUSSION
    1. Inherent characteristics of the new alfalfa variety'Alfaking'
    2. Dry matter yield of the new alfalfa variety 'Alfaking'
    3. Forage nutritive value of the new alfalfa variety'Alfaking'
Ⅳ. CONCLUSIONS
Ⅴ. ACKNOWLEDGEMENTS
Ⅵ. REFERENCES

• Ki-Won Lee(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea) Corresponding author
• Chang-Woo Min(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea)
• Jae Hoon Woo(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea)
• Bo Ram Choi(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea)
• Hyung Soo Park(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea)
• Sang-Hoon Lee(Grassland & Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Republic of Korea)