Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)
- Volume 5 Issue 1
- /
- Pages.62-72
- /
- 1985
- /
- 2287-5824(pISSN)
- /
- 2287-5832(eISSN)
Effect of seeding date on growth , dry matter accumulation and chemical composition of sorghum , sudangrass and sorghum-sudangrass Hybrid
파종기 이동이 수수 , 수단그라스 및 수수$\times$ 수단그라스 교잡종의 생육 , 건물축적 및 성분 함량에 미치는 영향
Abstract
In order to find out the effects of seeding time on growth, dry matter production and nutritive content of Pioneer 931, Pioneer 988 and Piper, this study was carried out on the experimental field of Livestock Experiment Station in 1981-83. Seeding time were 7 with 14-day interval from April 16 to July 9. The results are summarized as follows: 1. It tool about 12 to 13 days from seeding to emergence in case of Mid-April seeding and 7 to 8 days in Late-June. Earlier seeding, more longer growth period from emergence to heading they required. 2. Plant height of Pioneer 931 seeded lately was longer than 4.5 meters in primary growth and Sudangrass was about 2.0 to 2.5 meters. Leaf area was the greatest in Mid-August by early seeding but it was increased until Early-October by late seeding. 3. Sorghum gas brought the highest yield in dry mater and Sudangrass the lowest. In general dry matter yield reduced gradually in response to later seeding but Pioneer 931 has brought more than 10 tons per hecter until Late-June. 4. Relative Growth Rate, Leaf Area Ratio and Leaf Weight of all varieties decreased in accordance with growth development. 5. Crude protein content of leaf was higher than stem and the younger the plants, the more protein they contain. Nitrogen Free Extract was just opposite to crude protein.
파종기(播種期)를 이동(移動)할 때 수수, 수단그라스, 그리고 수수
Keywords