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http://dx.doi.org/10.5333/KGFS.2004.24.3.231

Effects of Seeding Date on Ecological Response, Forage Yield Potential and Chemical Composition in Jeju Native Sorghum(Sorhgum bicolor L.)  

Cho, Nam-Ki (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Kang, Young-Kil (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Song, Chang-Khil (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Jeun, Yong-Chull (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Oh, Jang-Sik (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Cho, Young-Il (College of Agric., & Life Sci., Seoul National University)
Park, Sung-Jun (Dept. of Plant Resources Science, College of Agric., & Life Sci., Cheju National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.24, no.3, 2004 , pp. 231-236 More about this Journal
Abstract
In order to identify the growth characteristics, the yield and chemical composition of Jeju native sorghum(Sorghum bicolor L.) based on seeding date in Jeju region. Seeding carried out the 10-day intervals from March 27 to May 27 in 2000, respectively. Plant height was 222.9 cm, Showing the highest on seeding date, April 7 among that of any other seeding date. On the other hand, those of early and late seeding gradually decreased. The results of stem diameter, number of leaves were similar to those of the plant height. The yield of fresh, dry matter forage, crude protein and TDN found the highest on April 7 seeding, 48.0 MT/ha, 12.0 MT/ha, 1.0 MT/ha, 5.3 MT/ha, respectively. In early and late seeding, the yield was gradually decreased. According to delaying the seeding date, March 27 to May 27, the contents of crude protein (from 7.8 to $11.4\%$) ether extract(from 1.7 to $3.3\%$), nitrogen free extract(from 34.1 to $40.0\%$) and TDN(from 42.9 to $52.5\%$) were gradually increased, respectively. On the other hand, those of crude fiber (from 40.6 to $32.3\%$) and crude ash (from 10.3 to $7.6\%$) were decreased. These results showed that April 7 was the optimum seeding date with the sole object of feed production of Jeju native sorghum.
Keywords
Jeju native sorghum; Seeding date; Forage yield; Feeding value;
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Times Cited By KSCI : 1  (Citation Analysis)
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