The Effect of Popped Rice Hulls Compost Application on Soil Chemical and Physical Properties in Fluvio-marine Plain Paddy Soils
2006
Yoo, C.H. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea), E-mail: [email protected] | Yang, C.H. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Kim, T.K. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Ryu, J.H. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Kim, B.S. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Kim, J.D. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Jung, K.Y. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea)
Fluvio-marine paddy soils in Korea consist of high silt content and have the hardpan located below 20~30 cm from surface soil. This properties cause poor rice rhizosphere conditions such as low permeability and porosity, high bulk density and hardness. The aims of this study was to investigate the effect of popped rice hulls compost(PRHC) on soil fertility changes in the Fluvio-marine plain paddy soils. Total nitrogen content and nitrogen mineralization rate of PRHC were 1.17 and 33.5, respectively, and its C/N ratio was 35.4. Application of PRHC increased the content of organic matter and exchangeable potassium and improved the bulk density and porosity.
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