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Effect of Varieties and Seeding Date on Over Winter and Dry Matter Yield of Italian Ryegrass in Paddy Field

논에서 이탈리안 라이그라스 품종별 파종시기가 월동 및 건물수량에 미치는 영향

  • Kim, Meing-Jooung (Hanwoo Experiment Station, National Institute of Animal Science, RDA) ;
  • Choi, Ki-Jun (National Institute of Animal Science RDA) ;
  • Kim, Jong-Geun (National Institute of Animal Science RDA) ;
  • Seo, Sung (National Institute of Animal Science RDA) ;
  • Yoon, Sei-Hyung (National Institute of Animal Science RDA) ;
  • Lim, Young-Chul (National Institute of Animal Science RDA) ;
  • Im, Seok-Ki (Hanwoo Experiment Station, National Institute of Animal Science, RDA) ;
  • Kwon, Eung-Gi (Hanwoo Experiment Station, National Institute of Animal Science, RDA) ;
  • Chang, Sun-Sik (Hanwoo Experiment Station, National Institute of Animal Science, RDA) ;
  • Kim, Hyeong-Cheol (Hanwoo Experiment Station, National Institute of Animal Science, RDA) ;
  • Kim, Tae-Il (Hanwoo Experiment Station, National Institute of Animal Science, RDA)
  • 김맹중 (농촌진흥청 국립축산과학원 한우시험장) ;
  • 최기준 (농촌진흥청 국립축산과학원) ;
  • 김종근 (농촌진흥청 국립축산과학원) ;
  • 서성 (농촌진흥청 국립축산과학원) ;
  • 윤세형 (농촌진흥청 국립축산과학원) ;
  • 임영철 (농촌진흥청 국립축산과학원) ;
  • 임석기 (농촌진흥청 국립축산과학원 한우시험장) ;
  • 권응기 (농촌진흥청 국립축산과학원 한우시험장) ;
  • 장선식 (농촌진흥청 국립축산과학원 한우시험장) ;
  • 김형철 (농촌진흥청 국립축산과학원 한우시험장) ;
  • 김태일 (농촌진흥청 국립축산과학원 한우시험장)
  • Published : 2009.12.31

Abstract

This experiment was carried out to investigate the effect of cultivar and seeding date on the winter survival rate, quality and DM yield of Italian ryegrass on paddy field for three years in Suwon. Seeding started from 30th Sep. 2003. at intervals of five days and finished 20th Oct. New varieties of Italian ryegrass used in this experiment were "Kospeed", "Kowinmaster" and "Hwasan 101". The winter survival average rate of 5th Oct. seeding plot was 89.8% and it decreased with delayed seeding date. The heading date of "Kospeed" was 7th~13rd May, "Kowinmaster" was 16th May, but "Hwasan 101 ho" didn't show heading until 17th May. Dry matter (DM) yields of 30th Sep. seeding plot were Kospeed 7,909kg/ha, Kowinmaster 6,398 kg/ha and Hwasan 101 ho 5,204 kg/ha. DM yield was decreased with delayed seeding date. Total digestible nutrient (TDN) yield was also decreased with delayed seeding date. Crude protein (CP) content was the highest in Kospeed. seeding plot as 18.3% and in vitro dry matter digestibility (IVDMD) was not showed significant difference among seeding dates.

Keywords

Italian ryegrass;Seeding date;New variety;Yield;Over winter

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