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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of the Sowing and Harvesting Dates on the Agronomic Characteristics and Feed Value of Corn and Sorghum×Sorghum Hybrid in Youngnam Mountain Area

영남산간지역에서 옥수수와 수수×수수 교잡종의 파종시기와 수확시기가 조사료 생육 특성과 사료가치에 미치는 영향

  • Lee, Hyuk-Jun (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University) ;
  • Joo, Young-Ho (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University) ;
  • Lee, Seong-Shin (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University) ;
  • Paradipta, Dimas Hand Vidya (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University) ;
  • Han, Ouk-Kyu (Department of Crop Science, Korea National College of Agriculture and Fisheries) ;
  • Ku, Ja-Hwan (Central Area Crop Breeding Division, NICS, RDA) ;
  • Min, Hyeong-Gyu (Sancheong Agricultural Technology center) ;
  • Oh, Jung-Sik (Sancheong Agricultural Technology center) ;
  • Kim, Sam-Churl (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University)
  • 이혁준 (경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) ;
  • 주영호 (경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) ;
  • 이성신 (경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) ;
  • ;
  • 한옥규 (국립한국농수산대학 식량작물학과) ;
  • 구자환 (국립식량과학원 중부작물부) ;
  • 민형규 (산청군 농업기술센터) ;
  • 오정식 (산청군 농업기술센터) ;
  • 김삼철 (경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원))
  • Received : 2019.01.31
  • Accepted : 2019.05.07
  • Published : 2019.06.30
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Abstract

This study was carried out from 2015 to 2016 to identify the suitable sowing and harvesting dates of summer crops in the mountain of Yeongnam, South Korea. The experimental design consisted of the different sowing and harvesting dates as follows: corn hybrid (Z. mays, Kwangpyeongok) of sowing (May 8, 19, and 27) and harvesting (August 10, 20, and 30); sorghum${\times}$sorghum hybrid (Sorghum bicolor ${\times}$ Sorghum bicolor, SS405) of sowing (May 27, June 19 and June 27) and harvesting (August 10, 20, and 30). In corn hybrid, ear rate and dry matter (DM) yield decreased (p<0.05) with the postponement of sowing date. Otherwise, ear rate and DM yield increased (p<0.05) with the postponement of harvesting date. Crude protein content decreased (p<0.05) with the postponement of sowing date, but neutral detergent fiber content increased (p<0.05). In sorghum${\times}$sorghum hybrid, plant length and DM yield with the postponement of harvesting date increased (p<0.05), while crude protein content with the postponement of harvesting date decreased (p<0.05). This study concluded that sowing corn hybrid in early May and sorghum${\times}$sorghum hybrid in early June then harvest in the middle of August was recommend to increase dry matter yield and feed value.

본 연구는 영남산간지역에서 옥수수와 수수${\times}$수수 교잡종의 파종시기와 수확시기를 구명하고자 2015년부터 2016년까지 수행하였다. 옥수수는 국내 육성품종인 광평옥을 5월 8일, 19일 및 27일에 파종하였고 8월 10일, 20일 및 30일에 수확하였다. 수수${\times}$수수 교잡종은 수입품종인 SS405를 5월 27일, 6월 6일과 16일에 파종하였고 8월 10일, 20일 및 30일에 수확하였다. 옥수수의 생산성 측면에서는 파종시기가 빠를수록 간장, 생엽수, 이삭비율, 생초수량 및 건물수량이 증가하였으며, 수확시기가 빠를수록 건물수량은 감소하였다. 사료가치 측면에서는 파종시기가 빠를수록 건물과 조단백질 함량은 증가하였고, 수확시기가 빠를수록 NDF와 ADF 함량은 감소하였다. 수수${\times}$수수 교잡종의 생산성 측면에서는 파종시기가 빠를수록 초장, 생초수량 및 건물수량은 증가한 반면, 수확시기가 빠를수록 초장, 생초수량 및 건물수량은 감소하였다. 사료가치 측면에서는 파종시기가 빠를수록 건물 함량은 증가하였으나, NDF 함량은 감소하였다. 조단백질 함량은 수확시기가 빠를수록 증가하였다. 이상의 결과에서 영남산간지역에서 여름사료작물로 옥수수와 수수${\times}$수수 교잡종을 생산할 경우 6월 초순 이전까지는 파종하여 8월 중순 이후에 수확하는 것이 조사료 생산성과 사료가치의 향상에 유리할 것으로 판단되었다.

Keywords

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