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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Seed Productivity by Varieties of Italian Ryegrass(Lolium multiflorum Lam.) Sown in Spring in Gangwon Highlands

강원 고지대에서 봄 파종한 이탈리안 라이그라스(Lolium multiflorum Lam.)의 품종에 따른 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 : 2020.10.14
  • Accepted : 2020.11.02
  • Published : 2020.12.31
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Abstract

This experiment was conducted to compare the seed productivity of the Italian ryegrass(Lolium multiflorum Lam.) varieties sown in the spring in Gangwon region. The experiment was randomized block design with three replications. The Experimental field was located in alpine areas of about 600 m above sea level in Gangwon province. The tested Italian Ryegrass varieties were 'Greenfarm', 'Greencall' and 'Kowinearly' developed by National Institute of Animal Science, RDA. Italian Ryegrass varieties were sown on March 26, 2020, and the harvest was on the 60th day of mean heading date, July 2. The heading date of Kowinearly was May 8, but Greenfarm and Greencall was May 4. The plant length was the largest in the Kowinearly variety. However, the Kowinearly suffered severe lodging. There was no significant difference in the length of spike among varieties, and the number of seeds per spike was the lowest in Greenfarm at 118.5 seed/spike. As for the seed weight per spike, the Greenfarm variety was significantly lower at 0.56 g/spike, but the 1,000 seed weight was the heaviest in the Greenfarm at 2.5g.. The number of spike per unit area was the highest in Greenfarm at 906/㎡. The dry matter content of seeds was the highest in Greenfarm at 54.3%, and for straw, Kowinearly was the highest at 35.3%. Seed productivity was not significant among varieties, and the average was 1,493 kg/ha. The yield of straw after seed production was also not significant among varieties (P>0.05), and the average was 3,172 kg/ha. 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 judged.

본 시험은 강원지역에서 봄철 파종한 이탈리안 라이그라스(Lolium multiflorum Lam.) 품종에 따른 종자 생산성을 비교하기 위해 수행되었다. 시험포장은 해발 600m내외의 고지대로 최근 육성된 그린콜(Greencall), 그린팜(Greenfarm) 그리고 코윈어리(Kowinearly) 품종을 공시하여 난괴법 3반복으로 수행하였다. 시험구의 파종은 2020년 3월 26일에 하였으며 수확은 평균 출수일로부터 60일째인 7월 2일에 하였다. 출수기는 코윈어리가 5월 8일로 가장 늦었으며 그린팜과 그린콜은 5월 4일에 출수하였다 초장은 코윈어리 품종이 가장 컸다. 그러나 코윈어리 품종은 도복이 심하게 일어났다. 이삭의 길이는 품종간에 유의적인 차이가 없었으며 이삭당 종자수는 그린팜이 118.5개/spike 로 가장 적었다. 이삭당 종자무게는 그린팜 품종이 0.56 g/spike로 유의적으로 적었으나 천립중은 그린팜이 2.5g으로 가장 무거웠다. 단위면적당 이삭수는 그린팜에서 906개/㎡로 가장 많았다. 수확시 종자의 건물함량은 그린팜이 54.3%로 가장 높았고 짚은 코윈어리가 35.3%로 가장 높았다. 종자 생산성은 그린콜이 가장 적었으며 평균 1,493 kg/ha로 나타났다. 채종후의 짚 생산량은 품종간에 유의성이 없었으며 평균 건물수량은 3,172 kg/ha로 나타났다. 이상의 결과를 종합하여 볼 때 강원지역 고지대에서 봄 파종을 통한 이탈리안 라이그라스 종자생산은 가을 파종에 비해 생산량이 낮지만 향후 생산성을 높일 수 있는 다양한 기술의 투입이 필요하며 경제성 분석을 통해 생산단가를 고려하여 결정하는 것이 바람직한 것으로 판단되었다.

Keywords

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