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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
권호 표지
DOI QR코드

DOI QR Code

Seed Productivity of Spring Sown Italian Ryegrass(Lolium multiflorum Lam.) Depending on Seeding Rate in Gangwon Province

강원 산간 지역에서 봄철 파종량에 따른 이탈리안 라이그라스(Lolium multiflorum Lam.)의 종자 생산성

  • Jeong, Eun Chan (Graduate School of International Agricultural Technology, SNU) ;
  • Kim, Hak Jin (Research Institute of Eco-friendly Livestock Science, GBST, SNU) ;
  • Li, Yan Fen (Graduate School of International Agricultural Technology, SNU) ;
  • Kim, Meing Joong (Research Institute of Eco-friendly Livestock Science, GBST, SNU) ;
  • Ji, Hee Chung (Department of Grassland and Forage Science, NIAS, RDA) ;
  • Kim, Jong Geun (Graduate School of International Agricultural Technology, SNU)
  • 정은찬 (서울대학교 국제농업기술대학원) ;
  • 김학진 (서울대학교 그린바이오과학기술연구원) ;
  • ;
  • 김맹중 (서울대학교 그린바이오과학기술연구원) ;
  • 지희정 (국립축산과학원 초지사료과) ;
  • 김종근 (서울대학교 국제농업기술대학원)
  • Received : 2021.02.02
  • Accepted : 2021.03.10
  • Published : 2021.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

This experiment was conducted to compare the seed productivity of Spring sown Italian ryegrass(Lolium multiflorum Lam.) depending on the seeding rates(20kg/ha, 30kg/ha, 40kg/ha) in Gangwon region. The experiment was a randomized block design with three replications. The test plots were located in alpine areas of about 600 m above sea level in Gangwon province. The tested Italian ryegrass variety was 'Greencall' developed by the National Institute of Animal Science, RDA. Italian Ryegrass was sown on March 26, 2020, and the seed harvesting was on the 60th day(2 July) from heading date. The heading date was May 8 with no difference, There were no significant differences in the agronomic characteristics including plant height. 30kg/ha seed rate was the highest at 146.8 seed/spike and 40kg/ha seed rate was the lowest at 114.7 seed/spike for the number of seeds per spike. The number of spikes per unit area was the highest in 40kg/ha at 886/㎡ and the lowest in 20kg/ha at 750/㎡. The yield of seed and straw was the highest in 40kg/ha at 1,288kg/ha and 2,970kg/ha respectively, but there was no difference. From the above results, the production of Italian ryegrass seeds through spring sowing in the Gangwon region is not much than autumn seeding, requiring the input of various technologies to increase productivity in the future, and it is desirable to determine the production cost through economic analysis was evaluated.

본 시험은 강원지역에서 봄에 파종한 이탈리안 라이그라스(Lolium multiflorum Lam.)의 파종 량(20, 30, 40 kg/ha)에 따른 종자 생산성을 비교하기 위해 수행되었다. 시험포장은 해발 600m 내외의 고지대 밭 포장으로 최근 육성된 극조생종 그린콜(Greencall) 품종을 공시하여 난괴법 3반복으로 수행하였다. 시험구의 파종은 2020년 3월 26일에 하였으며, 수확은 출수일로부터 60일째인 7월 2일에 하였다. 출수기는 5월 8일로 처리 간에 차이는 없었으며, 초장을 포함한 생육 특성에서도 유의적인 차이는 없었다. 이삭 당 종자 수는 30 kg/ha 파종량 시험구에서 146.8개로 가장 많았고, 40 kg/ha 파종량 시험 구에서 114.7개로 가장 적었다. ㎡ 당 이삭 수는 40 kg/ha 파종량 처리구에서 886개로 가장 많았고 20 kg/ha 파종량 처리구에서 750개로 가장 적었다. 종자 생산성과 채종 후의 짚 생산량 모두 유의성은 없었으며, 40 kg/ha 파종량 처리구에서 각각 1,288 kg/ha, 2,970 kg/ha로 상대적으로 높게 나타났다. 이상의 결과를 종합하여 볼 때 강원지역 고지대에서 봄 파종을 통한 이탈리안 라이그라스 종자 생산은 가을 파종에 비해 생산량이 낮아 향후 생산성을 높일 수 있는 다양한 기술의 투입이 필요하며, 경제성 분석을 통해 생산 단가를 고려하여 결정하는 것이 바람직한 것으로 판단되었다. 또한 국내에서 육성된 극조생종 "그린콜(Greencall)"의 경우 본 시험포에서 실험한 결과 파종량 처리마다 이삭 당 종자 개수, 단위 면적 당 이삭 수를 제외한 다른 조사 항목 간에 유의성이 나타나지 않았다.

Keywords

References

  1. APQA. 2020. Quarantined statistical report. Animal and Plant Quarantine Agency. Gimcheon. Korea
  2. Choi, G.J., Jung, E.S., Rim, Y.W., Lim, Y.C., Kim, K.Y., Sung, B.R. and Park, G.J. 2002. Effects of drill widths and nitrogen application levels in early spring on the growth characteristics and seed productivity of Italian Ryegrass(Lolium multiflorum Lam.). Journal of the Korean Society of Grassland and Forage Science. 22(3):221-228. doi.org/10.5333/KGFS.2002.22.3.221
  3. Dumas, J.B.A. 1831. Procedes de I'analyse organique. Annales de Chimie et de Physique. 47:198-205.
  4. Goering, H.K. and Van Soest, P.J. 1970. Forage fiber analysis. Agic. Handbook 379, U.S. Government Print Office, Washington, D.C.
  5. Holland, C., Kezar, W., Kautz, W.P., Lazowski, E.J., Mahanna, W.C. and Reinhart, R. 1990. The pioneer forage manual: A nutritional guide. Pioneer Hi-Bred International, INC., Desmoines, IA. pp. 1-55.
  6. Jeong, E.C., Kim, H.J., Li, Y.F., Kim, M.J., Ji, H.J. and Kim, J.G. 2020. Seed productivity by varieties of Italian ryegrass sown in spring in Gangwon highlands. Journal of the Korean Society of Grassland and Forage Science. 40(4):221-226. doi.org/10.5333/KGFS.2020.40.4.221
  7. Ji, H.C., Hwang, T.Y., Lee, K.W., Kim, W.H., Woo, J.H., Hong, K.H. and Cheo, K.H. 2018. Growth characteristics and productivity of Italian ryegrass(Lolium multiflorum Lam) new variety, 'Green Call'. Journal of the Korean Society of Grassland and Forage Science. 38(4):247-252. doi.org/10.5333/KGFS.2018.38.4.247
  8. Kang, C.H., Lee, I.S. and Kwon, S.J. 2020. Identification of ideal seed harvest time for Itallian ryegrass (IRG) 'Kowinearly' variety in reclaimed land. Korean Journal of Crop Science. 65(2):142-150. doi.org/10.7740/kjcs.2020.65.2.142
  9. Kim, K.Y., Choi, G.J., Lee, S.H., Hwang, T.Y., Lee, G.W., Ji, H.C. and Park, S.M. 2016. Effect of different seeding rates on seed productivity of the "Kowinearly" cultivar of Italian ryegrass (Lolium multiflorum Lam.) in paddy field. Journal of the Korean Society of Grassland and Forage Science. 36(4):340-343. doi.org/10.5333/KGFS.2016.36.4.340
  10. Kim, K.Y., Ji, H., Lee, S.H., Lee, K.W., Kim, W.H., Jung, M.W., Seo, S. and Choi, G.J. 2010. Yield and nutritive value of spring-seeded early and late maturity Italian ryegrass(Lolium multiflorum Lam.). Journal of the Korean Society of Grassland and Forage Science. 30(2):97-102. doi.org/10.5333/KGFS.2010.30.2.097
  11. KMA. 2019. Annual climatological report. Korea Meteorological Administration.
  12. MAFRA. 2019. The current situation of forage increase production and supplementation policy. Ministry of Agriculture, Food and Rural Affairs.
  13. Moore, J.E. 1970. Procedure for the two-stage in vitro digestion of forage. University of Florida, Department of Animal Science.
  14. Nam, C.H., Kim, K.S., Park, M.H., Yun, I.A., Bae, H.S. and Jang, H.S. 2020. The effect of cultivation environments on seed yield and quality of Italian ryegrass in Samsan reclaimed land. Journal of the Korean Society of Grassland and Forage Science. 40(2):73-79. doi.org/10.5333/KGFS.2020.40.2.73
  15. NIAS(National Institute of Animal Science). 2012. Standard tables of feed composition in Korea. National Institute of Animal Science, RDA, Suwon, Korea.
  16. NIAS(National Institute of Animal Science). 2018. 2018 Key tasks. National Institute of Animal Science, RDA, Suwon, Korea.
  17. SAS Institute Inc. 2003. SAS/STAT user guide: Statics, Version 9.0 (7th ed.). SAS Institute Inc. Cary, NC, USA.
  18. Simic, A., Vuckovic, S., Maletic, R., Sokolovic, D. and Djordjevic, N. 2009. The impact of seeding rate and inter-row spacing on Italian ryegrass for seed in the first harvest year. Turkish Journal of Agriculture and Forestry. 33(5):425-433. doi:10.3906/tar-0812-12
  19. Tilley, J.M.A. and Terry, D.R. 1963. A two-stage technique for the in vitro digestion of forage crops. Grass and Forage Science. 18(2):104-111. doi.org/10.1111/j.1365-2494.1963.tb00335.x