Influences of Site-specific N Application on Rice Grain Yield and Quality in Small Size Paddy Field
2006
Choi, M.G. (National Institute of Crop Science, RDA, Suwon, Republic of Korea), E-mail: [email protected] | Choi, W.Y. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Park, H.K. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Nam, J.K. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Back, N.H. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Lee, J.H. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Kim, S.S. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Kim, C.K. (National Institute of Crop Science, RDA, Suwon, Republic of Korea)
For precision farming the influences of site-specific N application on rice grain yield and quality were investigated in 0.5 ha paddy field from 2001 to 2003. In pre-cultured soil, EC, O.M. , total nitrogen, phosphate and potassium content showed high spatial variation, ranging from 11.63 to 52.03% of coefficient of variation, while that of pH was relatively low. In rice growth characteristics, tiller number at panicle formation stage was more than 10% in coefficient of variation, but plant height, SPAD figure at panicle formation stage and milled rice yield, protein content in brown rice showed less below 10%.
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