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http://dx.doi.org/10.7745/KJSSF.2012.45.2.235

Effects of Nitrogen Fertilization Increment on Forage Crops Cultivation in Saemangum Reclaimed Land  

Yang, Chang-Hyu (Department of Rice and Winter Cereal Crop, NICS, RDA)
Kim, Sun (Department of Rice and Winter Cereal Crop, NICS, RDA)
Lee, Jang-Hee (Department of Rice and Winter Cereal Crop, NICS, RDA)
Baek, Nam-Hyun (Department of Rice and Winter Cereal Crop, NICS, RDA)
Kim, Taek-Kyum (National Academy of Agricultural Science, RDA)
Choi, Weon-Young (Department of Rice and Winter Cereal Crop, NICS, RDA)
Jeong, Jae-Hyuk (Department of Rice and Winter Cereal Crop, NICS, RDA)
Lee, Sang-Bok (Department of Rice and Winter Cereal Crop, NICS, RDA)
Lee, Gyeong-Bo (Department of Rice and Winter Cereal Crop, NICS, RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.45, no.2, 2012 , pp. 235-240 More about this Journal
Abstract
This study was conducted to find out the optimum cropping system for the stable production of forage crops in the newly reclaimed land located at Gwanghwal region of Saemangum reclaimed land in which the soil is sandy loam (Munpo series). There were two treatments of nitrogen fertilization 20% increment based on the standard fertilization of 150, $200kg\;ha^{-1}$. Whole crop barley as the winter crop sowed on 27 October. After the whole crop barley was harvested at the end of May. Corn and sorghum${\times}$sudangrass as the summer crop sowed at the early of June successively on the same field. Emergence rate the whole crop barley was high while the summer crops were low. Soil salinity was increased during cultivation of summer crops. However, corn and sorghum${\times}$sudangrass were not damaged by salt. Increase of nitrogen fertilization made the growth of cultivation crops good, stem and leaf tended to have a lot of the mineral nutrients at heading stage and silking stage. After experiment, among soil chemical properties pH, content of exchangeable sodium were decreased and content of organic matter, available phosphate were increased. Dry matter yield were showed whole crop barley $13,170kg\;ha^{-1}$ and sorghum${\times}$sudangrass $19,440kg\;ha^{-1}$ by increment of nitrogen fertilization. Therefore, to improve the product and nutrient balance of reclaimed saline land comprehensive soil management should be considered.
Keywords
Forage crop; Nitrogen fertilization increment; Reclaimed land;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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