Field Variability and Variable Rate Fertilization of Nitrogen in a Direct Seeding Paddy for Precision Agriculture
2005
Jung, Y.S. (Kangwon National University, Chuncheon, Republic of Korea), E-mail: [email protected] | Lee, H.J. (Seoul National University, Seoul, Republic of Korea) | Chung, J.H. (Seoul National University, Seoul, Republic of Korea) | Kang, C.S. (Jeonbuk National University, Jeonju, Republic of Korea) | Park, J.G. (Jeonbuk National University, Jeonju, Republic of Korea)
Since understanding on spatial variability of a field is essential to pursue precision agricultural technology, a field study for field variability and variable rate fertilization of nitrogen in a direct seeding paddy was attempted. Variable rate application of nitrogen was designed with soil test, and field application was tested in a direct seeding paddy in the Kimje, Jeonbuk, Korea. The grid samples of soil was collected from the field of which unit size was 35 m by 112 m on February before irrigating of the field. Soil organic matter, available phosphate and silicate, and extractable potassium were analyzed.
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