Spatial Variations in Salinity and Sodicity of Reclaimed Tideland Paddy Soils in Coastal Areas of Southwestern Korea

Reclaimed tidelands (RTLs) in the southwestern coastal areas of South Korea has been used for rice (Oryza sativa L.) cultivation due to high salinity soils. However, there is increased social pressure utilize RTLs upland crop decreased consumption. In this study, and sodicity 16 located were investigated explore suitability cultivation. Surface (0 - 20 cm) soil samples collected from 241 paddy fields RTL districts analyzed electrical conductivity saturated paste extracts (ECe), exchangeable sodium percentage (ESP), pH at 1:5 soil:water ratio (pH1:5). The ECe (range: 2.5 15.8 dS m-1), ESP (1.6 67.2%), pH1:5 (6.6 9.0) soils differed (P < 0.001) with districts. Though are indications ECe, ESP, year after reclamation, pattern was not statistically significant, suggesting that land management practices such as liming organic matter application required facilitate desalinization desodification RTLs. Of RTLs, normal (ECe 4.0 m-1, 15%, 8.5) found seven including Wolchen, Sanae, Baiksoo proportion these three 75%, 56%, 47%, respectively. Therefore, be more suitable than other because growth crops also susceptible moisture stress, information groundwater levels drainage successful RTLs.Distribution normal, saline, sodic, saline-sodic reclaimed area Korea.