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Influence of Gypsum, Popped Rice Hulls and Zeolite on Contents of Ca2+, Mg2+, Na+, K+ in Reclaimed Tideland Soils in Kyehwado
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 Title & Authors
Influence of Gypsum, Popped Rice Hulls and Zeolite on Contents of Ca2+, Mg2+, Na+, K+ in Reclaimed Tideland Soils in Kyehwado
Baek, Seung-Hwa; Lee, Sang-Uk; Lim, Hyo-Bin; Kim, Dae-Geun; Kim, Seong-Jo;
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The effect of application of gypsum (G), popped rice hulls (PRH), and zeolite (Z) in exchangeable cations concentrations of reclaimed tideland soil in Kyehwado was investigated for 3 years from 2004 to 2006 in a pot experiment with bermuda grass (Cynodon dactylon). Treatments with three soil conditioner and with three applications were established with three replications; G1 (1,550 kg ), G2 (3,100), and G3 (6,200) for gypsum, H1 (1,000), H2 (2,000), and H3 (3,000) for PRH, and HZ1 (200), HZ2 (400), and HZ3 (800) for co-application of zeolite with PRH at the 1,500 kg . At 60, 90, 120 days after treatment (DAT), exchangeable cations (, , , and ) were analyzed Gypsum application significantly decreased , , in the soil probably due to exchange and subsequent leaching of these cations by from the gypsum applied. Overall, concentration was gradually decreased by continuous application of soil conditioners and was in the order of 2004>2005>2006 regardless of the kinds and application rate of soil conditioners. Comparing concentrations among the soil conditioners in the same year, its concentration was in the order of gypsum concentration; i.e. concentration was in the order of gypsumPRH also showed a similar pattern to . Gypsum application significantly increased concentration and in the gypsum treated soil concentration increased with years.
Gypsum;Popped rice hulls;Zeolite;Aggregates;Soil Aggregation;Fine sandy loam;Silt loam;Cations;
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