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2018 Vol.51, Issue 4 Preview Page
November 2018. pp. 616-625
Abstract

Advanced understanding of SOC still requires further studies on diverse soils including a wide spectrum of paddy soils and agricultural practices. The objectives of this study were to investigate the effects of long-term fertilization on both light fraction (LF) and heavy fraction (HF) of soil organic matter and the relationships among total C, C/N ratio, clay content, and fertilization type in paddy soils. Compost application led to a significant increase in HF and consequently in C and N contents. Compost plots had a higher C/N ratio compared to those of treatments without compost in HF as well as LF. Correlation of C/N ratio to LF and HF was clearly separated into two groups as a boundary of about 9.5 of C/N ratio. These results clearly show that balanced fertilization together with composting could lead to synergic effects on enhancing C sequestration as well as plant nutrition in plow layer of paddy soils in Korea.

Correlation between C/N ratios of LF and C/N ratio of HF with long-term treatment of different fertilizers.

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Information
  • Publisher :Korean Society of Soil Science and Fertilizer
  • Publisher(Ko) :한국토양비료학회
  • Journal Title :Korean Journal of Soil Science and Fertilizer
  • Journal Title(Ko) :한국토양비료학회 학회지
  • Volume : 51
  • No :4
  • Pages :616-625
  • Received Date :2018. 11. 05
  • Accepted Date : 2018. 12. 03