Comparison of Soil Chemical Properties and Heavy Metal Contents in Organic and Conventional Paddy of Yongin and Anseong
2017
Gu, B.W., Hankyong National University, Anseong, Republic of Korea | Lee, T.G., Hankyong National University, Anseong, Republic of Korea | Kang, K., Hankyong National University, Anseong, Republic of Korea | Hong, S.G., Hankyong National University, Anseong, Republic of Korea | Hong, S.G., National Academy of Agricultural Science, Rural Development Administration, Wanju, Republic of Korea | Jang, T.I., Chonbuk National University, Jeonju, Republic of Korea | Kim, J.H., Jeollabuk-do Agricultural Research and Extension Services, Iksan, Republic of Korea | Park, S.J., Hankyong National University, Anseong, Republic of Korea
The aim of this study is to investigate the chemical properties and heavy metal concentration of soils in conventional and organic paddy. We sampled and analyzed topsoil (0~15 cm) and subsoil (15~30 cm) of conventional and organic paddy fields in Yongin and Anseong, South Korea. The statistical significance between groups was determined by Duncan's multiple range test and correlation between soil properties was also analyzed. The results show that organic matter (OM) and T-N of conventional paddy soil were higher than those of organic paddy soil. However, higher T-P concentration was observed in organic paddy soil than conventional paddy soil. As, Pb, and Zn concentration in organic paddy soil were statistically lower than those in conventional paddy soil. The couple of water content (WC) and As, OM and T-N, T-P and P2O5, T-P and Zn, P2O5 and Zn, and Cr and Ni had a good positive correlation but the couple of WC and T-P, WC and Zn, T-P and As, and As and Zn had a strong negative correlation. It can be concluded that organic farming is beneficial to soil environment by reducing the amounts of organic matter, T-N, As, Pb, and Zn concentration in paddy soil when compared to conventional farming.
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