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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Comparative Study of Seed and Straw Productivity of Italian Ryegrass(Lolium multiflorum Lam.) 'GreenCall' according to Inter-Row Spacing in the Southern Region

남부 지역에서 파종간격에 따른 이탈리안 라이그라스(Lolium multiflorum Lam.) '그린콜' 품종의 종자 및 짚 생산성 비교

  • Li, Yan Fen (Graduate School of International Agricultural Technology, SNU) ;
  • Wang, Li Li (Graduate School of International Agricultural Technology, SNU) ;
  • Yu, Young Sang (Graduate School of International Agricultural Technology, SNU) ;
  • Jeong, Eun Chan (Graduate School of International Agricultural Technology, SNU) ;
  • Ahmadi, Farhad (Research Institute of Eco-friendly Livestock Science, GBST, SNU) ;
  • Li, Sang Hoon (Department of Grassland and Forage Science, NIAS, RDA) ;
  • Kim, Jong Geun (Graduate School of International Agricultural Technology, SNU)
  • ;
  • ;
  • 유영상 (서울대학교 국제농업기술대학원) ;
  • 정은찬 (서울대학교 국제농업기술대학원) ;
  • ;
  • 이상훈 (국립축산과학원 초지사료과) ;
  • 김종근 (서울대학교 국제농업기술대학원)
  • Received : 2022.05.16
  • Accepted : 2022.06.14
  • Published : 2022.06.30
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Abstract

This experiment was conducted to investigate the change in the productivity of Italian ryegrass seeds according to the inter-row spacing in the southern region of the Korean Peninsula. Italian ryegrass (Lolium multiflorum Lam.) 'Green Call' variety was sown in Jinju, Gyeongnam in the fall of 2020 with three inter-row spacings (20, 30 and 40 cm). The experiment was arranged a randomized block design with three replications. The ryegrass was sown on October 17, 2020, and the harvest was on May 31, about 60 days from the first heading stage. There was no difference among treatments with an average of April 27th in heading stage. Plant height was significantly longer at 30 cm seeding interval and the shortest in 20 cm treatment. The length of the spike was the longest in the 40 cm seeding interval, and the number of seeds per spike was the highest in the 20cm seeding interval, but there was no significant difference among treatments. The seed yield was the highest at the 20 cm sowing interval (2,180 kg/ha), and decreased as the spacing increased. The dry matter content of seeds and straw was found to be 44.90% and 45.51% on average, and there was no significant difference among treatments. The amount of remaining straw after harvesting was found to be 7,506 kg/ha on average on DM basis, and was high at the 20 cm seeding interval. In view of the above results, it was found that it is most advantageous to sow at intervals of 20 cm when producing Italian ryegrass seeds through autumn sowing in the southern region.

본 시험은 남부지역에서 파종간격에 따른 이탈리안 라이그라스 종자의 생산성 변화를 구명하기 위하여 수행되었다. 이탈리안 라이그라스(Lolium multiflorum Lam.) '그린콜' 품종을 2020년 가을에 경남 진주지역에 파종하였다. 처리는 3처리의 파종간격(20cm, 30cm, 및 40cm)을 두고 난괴법 3반복으로 수행하였다. 시험구의 파종은 2020년 10월 17일에 하였으며 수확은 출수일로부터 약 60일째인 2021년 5월 31일에 하였다. 출수기는 평균 4월 27일로 처리 간에 차이는 없었다. 초장은 30cm 파종간격에서 유의적으로 길었고 20cm 처리구에서 가장 짧았다. 내도복, 내병성 및 내한성은 처리간에 유의적인 차이가 나타나지 않았지만, 도복이 심한 편이었다. 이삭의 길이는 40cm구에서 가장 길었고 이삭당 종자수는 20cm 파종구에서 가장 많았으나 처리간 유의성은 없었다. 종자 수량은 20cm 파종간격에서 2,180 kg/ha로 가장 많았으며 간격이 넓어질수록 줄어들었다. 종자 및 짚의 건물함량은 평균 44.90% 및 45.51%으로 나타났으며 처리간 유의적인 차이는 나타나지 않았다. 채종 후 남은 짚의 수량은 건물기준 평균 7,506 kg/ha로 나타났으며 20cm 파종간격에서 높았다. 이상의 결과를 종합하여 볼 때 남부지역에서 가을 파종을 통한 이탈리안 라이그라스 종자생산 시 20cm 간격으로 파종하는 것이 가장 유리한 것으로 나타났다.

Keywords

Acknowledgement

본 논문은 농촌진흥청 공동연구사업(과제번호 PJ01477503)의 지원에 의해 이루어진 것이며, 이의 지원에 감사드립니다.

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