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Salt Removal in a Reclaimed Tidal Land Soil with Gypsum, Compost, and Phosphate Amendment
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 Title & Authors
Salt Removal in a Reclaimed Tidal Land Soil with Gypsum, Compost, and Phosphate Amendment
Lee, Jeong-Eun; Seo, Dong-Hyuk; Yun, Seok-In;
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 Abstract
High salinity and sodicity of soils play a negative role in producing crops in reclaimed tidal lands. To evaluate the effects of soil ameliorants on salt removal in a highly saline and sodic soil of reclaimed tidal land, we conducted a column experiment with treating gypsum, compost, and phosphate at 0-2 cm depth and measured the salt concentration of leachate and soil. Electrical conductivity of leachate was at 1 pore volume (PV) of water and decreased to less than at 3 PV of water. Gypsum significantly decreased SAR (sodium adsorption ratio) of leachate below 3 at 3 PV of water and soil ESP (exchangeable sodium percentage) below 3% for the whole profile of soil column. Compost significantly decreased ESP of soil at 0-5 cm depth to 5% compared with the control (20%). However, compost affected little the composition of cations below a depth of 5 cm and in leachate compared with control treatment. It was concluded that gypsum was effective in ameliorating reclaimed tidal lands at and below a soil layer receiving gypsum while compost worked only at a soil layer where compost was treated.
 Keywords
Exchangeable sodium percentage;Salinity;Salt leaching;Sodicity;Sodium adsorption ratio;
 Language
Korean
 Cited by
1.
퇴비, 석고, 인산으로 개량한 염류-나트륨성 간척지 토양에서 배추의 생육,이정은;서동혁;노희명;윤석인;

원예과학기술지, 2016. vol.34. 4, pp.587-595 crossref(new window)
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