Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of Fall Sowing Dates on Winter Survival and Dry Matter Yields of Alfalfa in the Central Area of South Korea

  • Seung Min Jung (Grassland & Forages Division, National Institute of Animal Science) ;
  • Bae Hun Lee (Grassland & Forages Division, National Institute of Animal Science) ;
  • Ki Won Lee (Grassland & Forages Division, National Institute of Animal Science) ;
  • Mirae Oh (Grassland & Forages Division, National Institute of Animal Science) ;
  • Hyung Soo Park (Grassland & Forages Division, National Institute of Animal Science)
  • Received : 2023.09.01
  • Accepted : 2023.09.26
  • Published : 2023.09.30
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Abstract

This study was conducted to determine the appropriate seeding dates by verifying the difference in winter survival and productivity of alfalfa according to fall sowing dates in the central area of South Korea. The experiment was conducted for 2 years (2020 and 2021) at the field in the Department of Animal Resources Development, NIAS located in Cheonan. Sowing dates started from September 18 to November 8 with 10 days of intervals during 2020 and 2021; SO1 (September 18), SO2 (September 28), SO3 (October 8), SO4 (October 18), SO5 (October 28), and SO6 (November 8). After sowing, the winter survival rate was measured in the spring of the following year, and the dry matter yield was measured by harvesting at 10% flowering and harvesting five times a year. SO6 failed to winter survival, and SO5 also had a lower winter survival rate than SO1~4 (p<0.05). The average annual dry matter yield of alfalfa linearly decreased with delaying sowing dates (p<0.05). The feed value did not differ in the same year by delaying the sowing date in the same year. These results suggest that sowing date should be started before October 18 to increase winter survival and productivity of alfalfa in the central area of South Korea.

Keywords

Acknowledgement

This research was supported by the "Development of stable cultivation, preservation, and utilization techniques for alfalfa (PJ01593901)" and 2023 the RDA Fellowship Program of National Institute of Animal Science, Rural Development Administration, Republic of Korea.

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