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http://dx.doi.org/10.5389/KSAE.2013.55.4.021

Application of Surface Cover Materials and Soil Amendments for Reduction of Non-Point Source Pollution from Upland Fields  

Shin, Min Hwan (강원대학교 농업생명과학대학 지역건설공학과)
Jang, Jeong Ryeol (한국농어촌공사 농어촌연구원)
Shin, Hyun Jun (한국건설기술연구원)
Kum, Dong Hyuk (강원대학교 농업생명과학대학 지역건설공학과)
Choi, Yong Hun (강원대학교 농업생명과학대학 지역건설공학과)
Won, Chul Hee (강원대학교 농업생명과학대학 지역건설공학과)
Lim, Kyoung Jae (강원대학교 농업생명과학대학 지역건설공학과)
Choi, Joong Dae (강원대학교 농업생명과학대학 지역건설공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.55, no.4, 2013 , pp. 21-28 More about this Journal
Abstract
The objective of the study was to investigate the effect of rice straw mat, rice straw mat with PAM (Polyacrylamide) and gypsum addition on surface runoff and sediment discharge in field. Six experimental plots of $5{\times}22m$ in size and 3 % in slope prepared on gravelly sandy loam soil were treated with control, rice straw mat cover with gypsum and rice straw mat cover with gypsum and PAM. Radish in Spring and Chinese cabbage in autumn growing seasons were cultivated. Non point source (NPS) pollution discharge was monitored and compared among the treatments. Rainfall of the 10 monitored events ranged from 17.0 mm to 93.5 mm. Runoff coefficient of the events was 0.005~0.239 in control plot, 0~0.176 in rice straw plot with gypsum and 0~0.046 in rice straw mat plot with gypsum and PAM. When compared to the control plot, the runoff amount was reduced by 10.4~100 % (Ave. 60.8) in rice straw plot with gypsum and 80.7~100 % (Ave. 96.7 %) in rice straw mat plot with gypsum and PAM. The reduction of NPS pollution load was 54.6 % for BOD5, 71.5 % for SS, 41.6 % for TN and 61.4 % for T-P in rice straw with gypsum plot and 91.9 % for BOD5, 92.0 % for SS, 88.0 % for TN and 88.5 % for T-P in rice straw mat with gypsum and PAM plot. This research revealed that rice straw mat cover with soil amendments on the soil surface could not only increase the crop yield but also reduce the NPS pollution loads substantially.
Keywords
Gypsum; NPS; PAM; Pollution load; Runoff;
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Times Cited By KSCI : 4  (Citation Analysis)
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