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http://dx.doi.org/10.5333/KGFS.2003.23.1.037

Effects of Split Nitrogen Application on Growth Characters, Yield Potential and Feed Value in Jeju Italian Millet  

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-Kil (Dept of Plant Resources Science, College of Agric. & Life Sci., Cheju National University)
Ko, Dong-Hwan (Dept of Plant Resources Science, College of Agric. & Life Sci., Cheju National University)
Cho, Young-Il (College of Agric. & Life Science, Sunchon Nat'l Univ.)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.23, no.1, 2003 , pp. 37-42 More about this Journal
Abstract
This study was conducted at a volcanic ash soil in the Experimental Farm of Cheju national university from May 1, 2000 to August 25, 2000 to determine the optimum frequency of split N application for. forage production of Jeju Italian millet(Setaria italica Beauvis). N .rate was applied with 200kg N/ha, and frequencies of the split application were 1. 2, 3, 4 and f times. Days to heading was 87 days in the N applied plot all at once, was delayed to 93 days at the five times split-applied plot. Plant height was the greatest (143cm) at the four times split-applied plot, but above o. below that was short. Leaf length, number of leaves and nodes were a similar tendency to plant height. SPAD(Soil Plant Analysis Development) reading values rose 34.3∼36.2 as N was split-applied from one to five times. Fresh forage, dry matter, crude Protein and TDN yield at the H split-applied to four times increased 33.08∼5l.50MT/ha, 9.94∼13.36MT/ha, 0.93∼1.70MT/ha and 5.06∼7.28MT/ha, respectively, but at the five tines split-applied plot decreased to 49.33MT/ha, 12.69MT/ha, 1.65MT/ha and 6.98 MT/ha, respectively. As the increasing of N split-applied. crude protein, crude fat NFE and TDN content increased 9.4∼13.0％, 1.5∼l.9％, 44.5∼45.5% and 50.9∼55.0％, respectively, whereas crude fiber and crude ash content decreased 35.3∼31.6% and 9.3∼8.3, respectively.
Keywords
Jeju Italian millet; Split nitrogen application; Growth characters; Feed value;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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