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http://dx.doi.org/10.5333/KGFS.2005.25.4.239

Effect of the Planting Densities and Nitrogen Levels on the Growth Characteristics, Dry Matter Yield and Nutritive Value of Corn for Silage in Alpine Areas  

Lee Joung Kyong (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Park Hyung Soo (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Chung Jong Won (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Kim Jong Geun (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Lim Young Chul (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Kim Young Geun (Hanwoo Experiment Station, National Livestock Research Institute, RDA)
Lee Sung Chul (Woosuk University)
Jung Jae Rok (Kongju National Univ.)
Sung Kyung Il (Kangwon National Univ.)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.25, no.4, 2005 , pp. 239-244 More about this Journal
Abstract
This study was conducted to investigate the effect of the planting densities and nitrogen levels on the growth characteristics, dry matter yield and nutritive value of corn for silage in alpine area(altitude 800m a.s.1.) of National Livestock Research Institute from 2001 to 2002. The experiment was arranged in a split plot design with three replications. Main plots consisted of three planting densities, low(67,000 plants/ha), medium(89,000 plants/ha) and high(95,000 plants/ha). Sub plots consisted of three nitrogen levels, 150 kg/ha, 200 kg/ha, and 250 kg/ha. Tassel height of corn was increased with decreasing planting density, and nitrogen level of 200 kg/ha in all main plots. Ear height of corn was decreased with increasing planting density, and 150 kg/ha of three nitrogen levels. But there were no significant differences among treatment in tassel and ear height. Although dry matter ear ratio of whole com was increased with decreasing planting density, there were no significant differences among treatments. But there were significant differences among nitrogen levels(P<0.05). Dry matter yield of com was high with increasing planting density, but there were no significant differences among treatments. And DM yield of corn was significant difference among nitrogen levels(P<0.05). Crude protein content of corn was the highest with high planting density and low nitrogen level. NDF and ADF content of com was the highest with low planting density and nitrogen levels of 200 kg/ha in all main treatments. These results indicate that low planting density(67.000 plants/ha) and nitrogen of 150-200 kg/ha would be the optimum level fur dry matter yield and nutritive value of silage com in alpine area.
Keywords
Com silage; Planting density; Nitrogen level; Dry matter yield; Nutritive Value;
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Times Cited By KSCI : 1  (Citation Analysis)
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