Effect of Fly Ash Fertilizer on Paddy Soil Quality and Rice Growth

비산재로 제조한 비료가 논토양 질과 벼 생육에 미치는 영향

  • Oh, Se Jin (Department of Biological Environment, Kangwon National University) ;
  • Yun, Hyun Soo (Department of Biological Environment, Kangwon National University) ;
  • Oh, Seung Min (Department of Biological Environment, Kangwon National University) ;
  • Kim, Sung Chul (Department of Bioenvironmental Chemistry, Chungnam National University) ;
  • Kim, Rog Young (Department of Biological Environment, Kangwon National University) ;
  • Seo, Yung Ho (Agricultural Environment Research Section, Gangwondo Agricultural Research and Extension Services) ;
  • Lee, Kee Suk (Korea South East Power Co. Ltd.) ;
  • Ok, Yong Sik (Department of Biological Environment, Kangwon National University) ;
  • Yang, Jae E. (Department of Biological Environment, Kangwon National University)
  • Received : 2013.04.08
  • Accepted : 2013.07.23
  • Published : 2013.12.31


Coal ash can be added to agricultural soils to increase the chemical properties of soil such as pH, cation exchange capacity and nutrient availability of - B, Ca, Mo etc-. Therefore, the main purpose of this study was to evaluate the feasibility of fly ash as a soil amendment in paddy soils. Selected fly ash was mixed with bentonite and calcium hydroxide at the ratio of 80:15:5 (w/w) and manufactured as a pellet type at the size of 10 mm. Field experiments were conducted to evaluate the effects of fly ash fertilizer on the soil quality and crop growth compare to the control (no fertilizer) and, - traditional fertilizer. Results showed that soil pH and organic matter in paddy soils after applying the manufactured fly ash fertilizer were not increased compared to the other two treatments. However, the concentration of available phosphate and silicate in paddy soils were higher than those of the control and traditional fertilization. With regard to crop growth, no significant difference was observed between three different treatments. However, the content of protein in the rice grain cultivated with the fly ash fertilizer was higher than in the rice cultivated by other two treatments. Overall, fly ash fertilizer could increase the concentration of available silicate and phosphate in the paddy soil and improve the rice quality. In conclusion, fly ash can be utilized in agricultural soils as soil amendment, especially in the rice paddy soil.


Supported by : 한국에너지기술평가원(KETEP)


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