2008 Joint Annual Meeting (5-9 Oct. 2008): The Uptake and Release Characteristics of Nutrients from Aquatic Ponds Constructed under Different Compost Application for Lotus (Nelumbo nucifera) Cultivation in Lake Juam, Korea.
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593-4 The Uptake and Release Characteristics of Nutrients from Aquatic Ponds Constructed under Different Compost Application for Lotus (Nelumbo nucifera) Cultivation in Lake Juam, Korea.



Monday, 6 October 2008
George R. Brown Convention Center, Exhibit Hall E
Han Myung Ja1, Seo Dong Cheol2, Lee Yong Chol3, Bang Seok Bae4, Oh Eun Jeong5, Chun Young Moon6, DeLaune Ronald D2, Lee Sung Tae6, Heo Jong Soo7 and Cho Ju Sik1, (1)Department of Bio-Environmental Sciences, Sunchon National University, 315 Maegokdong, Sunchon, 540-742, South Korea
(2)Wetland Biogeochemistry Institute, Louisiana State University, 275 west roosevelt st., Louisiana, LA 70802
(3)Juamdam Office, Korea Water Resources Corporation, Suncheon, 540-861, South Korea
(4)Juamdam Office, Korea Water Resources Corporation, Suncheon 540-861, Suncheon, 540-861, South Korea
(5)Water Analysis & Research Center, Korea Water Resources Corporation, Daejeon 306-711, Daejeon, 306-711, South Korea
(6)Division of Plant Production Sciences, Sunchon National University, 315 maegokdong, Sunchon, 540-742, South Korea
(7)Division of Applied Life Science, Gyeongsang National University, 900 Gajwadong, Jinju, 660-701, South Korea
To evaluate the uptake and release characteristics of nutrients from aquatic ponds constructed under different compost application for lotus cultivation, the experiment was consisted of a lotus pond with compost application (site I) and a lotus pond without compost application (site II) in Lake Juam, Korea. The maximum amount of TN uptake by lotus (Nelumbo nucifera) in site I (with compost application) and II (without compost application) were 56.3 and 32.1 g m-2, respectively. The maximum amount of TP uptake by lotus in site I and II were 12.1 and 5.7 g m-2, respectively. The amount of COD, TN and TP release from soil in site I was higher than that in site II. In the case of COD balance, the total amount of COD inflow from agricultural water and rainfall in site I and II during the growing period were 157.44 and 6.69 kg 10a-1, respectively. The total amount of COD release from site I and II were about 31.10 and 13.46 kg 10a-1, respectively. In the case of TN balance, the total amount of TN inflow from agricultural water and rainfall in site I and II during the growing period were 7.23 and 3.43 kg 10a-1, respectively. In site I and II, the total amount of TN uptake by lotus were 56.27 and 32.07 kg 10a-1, respectively. The total amount of TN release from site I and II were about 1.39 and 1.13 kg 10a-1, respectively. In the case of TP balance, the total amount of TP inflow from agricultural water and rainfall in site I and II during the growing period were 8.08 and 0.19 kg 10a-1, respectively. In site I and II, the total amount of TP uptake by lotus were 12.20 and 5.72 kg 10a-1, respectively. The amount of TP release from site I and II were about 1.01 and 0.66 kg 10a-1, respectively.
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