Effects of Split Application of SCB Liquid Fertilizer on Rice Yield and Soil Chemical Property in Honam Plain Field
2011
Lee, S.B., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Cho, K.M., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Yang, C.H., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Oh, Y.J., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Park, T.I., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Kim, K.J., National Institute of Crop Science, RDA, Iksan, Republic of Korea
In order to establish the application method of slurry composting and biofilteration liquid fertilizer (SCB LF) in rice cultivation, experiments were studied on split application method of it and effects of it on soil chemical properties and rice yields. Land leveling by rotary tillage within 2 days after application of SCB LF, NH₄-N concentration in soil was maintained uniformly in all paddy field. Initial concentrations of NH₄-N and NO₃-N in soil were high at standard fertilization and 100% application of SCB LF as basal fertilization, however, after tillering stage they maintained similar concentrations in all experimental plots. NO₃-N content in infiltration water was slightly lower at 70% application of SCB LF as basal fertilization and 30% application of SCB LF as fertilization at panicle initiation stage than at standard fertilization. Yields of rice by split application of SCB LF were lower at 100% application of SCB LF as basal fertilization, however, those of the other application of SCB LF were similar with that of standard fertilization. In case of rice quality, perfect kernel rates were high and protein contents were lower at non-application and 100% application of SCB LF. Rice quality of 70% application of SCB LF as basal fertilization and 30% application of SCB LF as fertilization at panicle initiation stage were similar with that of standard fertilization.
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