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http://dx.doi.org/10.7745/KJSSF.2012.45.3.385

Study on Forage Cropping System Adapted to Soil Characteristics in Reclaimed Tidal Land  

Yang, Chang-Hyu (Department of Rice and Winter Cereal Crop, NICS, RDA)
Lee, Jang-Hee (Department of Rice and Winter Cereal Crop, NICS, RDA)
Kim, Sun (Department of Rice and Winter Cereal Crop, NICS, RDA)
Jeong, Jae-Hyeok (Department of Rice and Winter Cereal Crop, NICS, RDA)
Baek, Nam-Hyun (Department of Rice and Winter Cereal Crop, NICS, RDA)
Choi, Weon-Young (Department of Rice and Winter Cereal Crop, NICS, RDA)
Lee, Sang-Bok (Department of Rice and Winter Cereal Crop, NICS, RDA)
Kim, Young-Doo (Department of Rice and Winter Cereal Crop, NICS, RDA)
Kim, Si-Ju (Nationl Institute of Crop Science, 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.3, 2012 , pp. 385-392 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 and Gyehwa region of Saemangum reclaimed tide land from October, 2009 to October, 2011. Whole crop barley (WCB), Rye, Italyan-ryegrass (IRG) as winter crops and Corn, Sorghum${\times}$sudangrass hybrid (SSH) as summer crops were cultivated. Soil chemical properties, nutrient uptake, feed value, growth and yield were examinated. The testing soil was showed saline alkali soil where the contents of organic matter, available phosphate and exchangeable calcium were very low, while exchangeable sodium and magnesium were higher. Changes of soil salinity during the growing season of forage crops were less than 0.2%, and the growth of forage crops was not affected by salt injury. Standing rates of winter crops were higher in the order of Rye, WCB, and IRG, while the dry matter yield of winter crops was higher in the order of IRG, Rye and WCB. The highest crude protein (CP) content was recorded in IRG, and total digestive nutrients (TDN) contents were increased in the order of WCB, IRG, and Rye. The TDN content was higher in corn, whereas other feed value was higher in SSH. The content of mineral nutrients on stem, leaf and grain in IRG, Corn were high. After experiment pH was lowed, contents of exchangeable magnesium, sodium and organic matter were decreased while contents of total nitrogen, available phosphate and exchangeable potassium, calcium were increased. Winer crops and summer crops after continually cultivating in cropping system, fresh matter yield increased, compared to WCB-Corn (74,740 kg $ha^{-1}$), IRG-SSH 10%, IRG-Corn 7%, Rye-SSH 6%, Rye-Corn and WCB-SSH 3%. Dry matter yield increased, compared to WCB-Corn (20,280 kg $ha^{-1}$), IRG-SSH 7%, Rye-SSH 6%, IRG-Corn/Rye-Corn/WCB-SSH 3%. The TDN yield increased, compared to WCB-Corn (13,830 kg $ha^{-1}$), IRG-SSH 2%, WCB-SSH and IRG-Corn 1%. Therefore, we suggest that the crop combination of IRG-SSH and WCB-SSH would be preferred for silage stable production.
Keywords
Forage crops; Cropping system; Soil characteristic; Reclaimed land;
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