Effects of Electro-conductivity on Growth of Beet and Turnip in the Reclaimed Land Soil
2018
Jo, J.Y., Chungnam National University, Daejeon, Republic of Korea | Sung, H.Y., Chungnam National University, Daejeon, Republic of Korea | Chun, J.H., Chungnam National University, Daejeon, Republic of Korea | Park, J.S., Chungnam National University, Daejeon, Republic of Korea | Park, S.U., Chungnam National University, Daejeon, Republic of Korea | Park, Y.J., Rural Research Institute, Korea Rural Community Corporation, Ansan, Republic of Korea | Kim, S.J., Chungnam National University, Daejeon, Republic of Korea
BACKGROUND: The present study aimed to examine the crops capable of growing and adapting to the external environment and various stresses of reclaimed agriculture land for the development of high value-added agricultural utilization technology based on reclaimed land through standardization and empirical study of cultivation environment for cultivating crops. METHODS AND RESULTS: Two crops namely turnips and beets were selected for the salt tolerance test of soil environmental conditions on reclaimed land. Turnip and beet seedlings were planted on the soil collected at the 'Seokmun' reclaimed land. There are five treatments such as non-treatment, 1.0, 2.0 (control), 4.0 and 8.0 dSㆍm-1 of EC. The contents of betacyanin in beet roots was highest in control and decreased with increasing salt concentration. The GSL contents in the turnip roots waswere highest at EC 2.0 and decreased with increasing salt concentration, whereas those in turnip leaves waswere high both in the non-treated control and atthe EC 1.0-treatment. But, tThere was, however, no statistical differences among the treatments. CONCLUSION: The degree of salt tolerance of crops was examined, and the limit EC iswas expected to be 3.0~4.0 dS‧m-1 as reported to date. If the soil improvement is performed and irrigation systems are used in the actual reclaimed land, the EC of supplied irrigation will be low, and desalination effecttreatment by the lower EC of the supplied irrigation on the soil will lead to more favorable soil condition of the rhizosphere and cultivation environment offor the crops than those in the port experiment. Therefore, monitoring the salinity, water content and ground water level will enable prediction of the rhizosphere environment, and setting up irrigation management and supplying irrigation will lead to crop cultivation results that are close to normal.
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