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http://dx.doi.org/10.7745/KJSSF.2012.45.5.698

Characteristics in Chemical Properties of Agricultural Groundwater in Gyeongnam Province  

Lee, Seong-Tae (Gyeongsangnamdo Agricultural Research and Extension Services)
Kim, Eun-Seok (Gyeongsangnamdo Agricultural Research and Extension Services)
Song, Won-Doo (Gyeongsangnamdo Agricultural Research and Extension Services)
Kim, Jin-Ho (Rural Development Administration)
Kim, Min-Kyeong (Division of Climate Change & Agro-Ecplogy, NAAS, RDA)
Lee, Young-Han (Gyeongsangnamdo Agricultural Research and Extension Services)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.45, no.5, 2012 , pp. 698-703 More about this Journal
Abstract
This survey was conducted to obtain basic data of the quality of groundwater for agriculture in Gyeongnam province. Groundwater samples from paddy 15, upland 15, and plastic film house 30 sites were collected on April, July, and October in every two years from 2002 to 2008. According to the result of water quality analysis, groundwater quality was suitable for irrigation purpose averagely. The $NO_3$-N contents by land use were in the order of plastic film house > upland > paddy field and its contents were 6.53, 4.80, and $3.68mg\;L^{-1}$, respectively. In annual changes of water quality, pH was no significant change in paddy, upland, and plastic film house by 6.6~6.9. EC was increased in upland and plastic film house in 2008 and majors factors were $NO_3$-N and $Cl^-$. In upland and plastic film house, $NO_3$-N contents were 4.72 and $6.52mg\;L^{-1}$ in 2002, respectively, whereas they were 5.63 and $8.70mg\;L^{-1}$ in 2008, respectively. Of the investigated sites, $NO_3$-N was exceeded water quality standards for agriculture by 3.3~15.0% in plastic film house and $Cl^-$ was exceeded water quality standards for agriculture by 2.2% in upland of 2004. The $NO_3$-N contents were decreased with well depth and their contents were $5.38mg\;L^{-1}$ from 3~10 m, $4.87mg\;L^{-1}$ from 10~20 m, and $2.58mg\;L^{-1}$ from above 30 m. The $NO_3$-N contents by soil texture were highest in sandy loam by $5.73mg\;L^{-1}$ and lowest in clay loam by $4.13mg\;L^{-1}$. The $NO_3$-N contents by crops category were in order of fruit vegetables > leaf vegetables > rice > fruits > beans, contents of fruit vegetables and leaf vegetables were 5.81 and $5.30mg\;L^{-1}$, respectively.
Keywords
Groundwater; Soil texture; Well depth;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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