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Long-term Assessment of Chemical Properties from Paddy Soils in Gyeongnam Province
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 Title & Authors
Long-term Assessment of Chemical Properties from Paddy Soils in Gyeongnam Province
Son, Daniel; Sonn, Yeon-Kyu; Kang, Seong-Soo; Heo, Jae-Young; Kim, Dae-Ho; Choi, Yong-Jo; Lee, Sang-Dae; Ok, Yong Sik; Lee, Young Han;
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Field monitoring was performed to evaluate the chemical properties of 260 paddy soils every 4 years from 1999 to 2015 in Gyeongnam province. Soil chemical properties, including soil pH, electrical conductivity, amount of organic matter (OM), available phosphate (), exchangeable potassium (K), calcium (Ca), magnesium (Mg) and sodium (Na), and available silicate () were analyzed. In 2015, the average values of pH, OM, available , exchangeable K, Ca, and Mg, and available was 5.8, , , , , and , , respectively. The frequency distribution within optimum range of paddy soils was 49.2%, 20.8%, 18.5%, and 5.8% for soil pH, OM, available , and available , respectively. The available concentrations in 2015 was excess level with portion of 58% and did not alter significantly during the experimental period. Although the average of available concentration has tended to increase with every year, the insufficient proportion of available concentration in 2015 was 48%. These results indicated that a balanced management of soil chemical properties can properly control the amount of fertilizer applied for sustainable agriculture in paddy field.
Chemical property;Paddy;Soil fertility;Long-term monitoring;
 Cited by
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