Effect of Spatial Soil Salinity Variation on the Emergence of Soiling and Forage Crops Seeded at the Newly Reclaimed Tidal Lands in Korea
2009
Sohn, Y.M., Rural Research Institute, KARICO, Ansan, Republic of Korea | Jeon, G.Y., Rural Research Institute, KARICO, Ansan, Republic of Korea | Song, J.D., Rural Research Institute, KARICO, Ansan, Republic of Korea | Lee, J.H., Rural Research Institute, KARICO, Ansan, Republic of Korea | Park, M.E., Rural Research Institute, KARICO, Ansan, Republic of Korea
Relation between spatial variation of soil salinity and emergence of five upland crops such as sudan grass, sesbania, barnyard grass, corn and soybean was studied in the three reclaimed lands of Korea during two years from 2007 to 2008. Although soil salinity is vary high at seeding season, desalting treatment by three days-flooding before seeding, reach at favorable level lower than 6 dS m-¹ of soil salinity for emergence of soiling and forage crops and then plant number emerged(No. m-² ) was 55∼149 for sudan grass, 118∼266 for barnyard grass, 46∼115 for sesbania, 3∼11 for corn and 6∼19 for soybean in 2007. However plant number emerged under no desalting treatment varies place by place because of soil salinity difference in 2008. Plant number emerged after seeding according to soil salinity was well expressed as logarithmic function, and sharply decrease with increase of soil salinity. It is accordingly concluded that desalting treatment of flooding before seeding of upland crops is essential for good emergence in the newly reclaimed land from tidal flat.
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