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http://dx.doi.org/10.13087/kosert.2011.14.4.001

Soil Surface Fixation by Direct Sowing of Zoysia japonica with Soil Improvement on the Dredged Soil Slope  

Jeong, Yong-Ho (Division of Forest Water and Soil Conservation, Korea Forest Research Institute)
Lee, Im-Kyun (Division of Forest Water and Soil Conservation, Korea Forest Research Institute)
Seo, Kyung-Won (Division of Forest Water and Soil Conservation, Korea Forest Research Institute)
Lim, Joo-Hoon (Division of Forest Water and Soil Conservation, Korea Forest Research Institute)
Kim, Jung-Ho (Kalim Environment Co., LTD.)
Shin, Moon-Hyun (Division of Forest Water and Soil Conservation, Korea Forest Research Institute)
Publication Information
Journal of the Korean Society of Environmental Restoration Technology / v.14, no.4, 2011 , pp. 1-10 More about this Journal
Abstract
This study was conducted to compare the growth of Zoysia japonica depending on different soil treatments in Saemangeum sea dike, which is filled with dredged soil. Zoysia japonica was planted using sod-pitching method on the control plot. On plots which were treated with forest soil and soil improvement, Zoysia japonica seeds were sprayed mechanically. Sixteen months after planting, coverage rate, leaf length, leaf width, and root length were measured and analyzed. Also, three Zoysia japonica samples per plot were collected to analyze nutrient contents. Coverage rate was 100% in B treatment plot(dredged soil+$40kg/m^3$ soil improvement+forest soil), in C treatment plots (dredged soil+$60kg/m^3$ soil improvement+forest soil), and D treatment plots (dredged soil+$60kg/m^3$ soil improvement), while only 43% of the soil surface was covered with Zoysia japonica on control plots. The width of the leaf on C treatment plots (3.79mm) was the highest followed by D treatment (3.49mm), B treatment (2.40mm) and control plots (1.97mm). Leaf and root length of D treatment was 30.18cm and 13.18cm, which were highest among different treatments. The leaf length of D treatment was highest followed by C, B, and A treatments. The root length of D treatment was highest followed by C, A, and B treatments. The nitrogen and phosphate contents of the above ground part of Zoysia japonica were highest in C treatment, followed by D, B, and A treatments. The nitrogen and phosphate contents of the underground part of Zoysia japonica were highest in D treatment, followed by C, A, and B treatments. C and D treatments showed the best results in every aspect of grass growth. The results of this study could be used to identify the cost effective way to improve soil quality for soil surface fixation on reclaimed areas using grass species.
Keywords
Coverage rate; Direct seeding; Growth; Nutrient content; Sea dike;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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