Reasonable Split Application Method of Nitrogen Fertilizer for Early Dry Seeding Culture of Rice in Honam Plant Area
2007
Kim, S.S. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea), E-mail: [email protected] | Choi, W.Y. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Back, N.H. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Choi, M.G. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea) | Park, H.K. (Honam Agricultural Research Institute, NICS, RDA, Iksan, Republic of Korea)
This study was carried out to elucidate the proper split application method of nitrogen fertilizer for early dry seeding culture of rice in Honam plain area from 1997 to 1998 in Korea. Dongjinbyeo was selected as rice variety for this experiment. The rate of 160 kg ha-¹ of nitrogen was split as 40-30-30% of total nitrogen at three different application time combination ; T1) basal-5th leaf-panicle formation(PF) stage, T2) 3rd leaf-5th leaf-PF, and T3) 3rd leaf-7th leaf PF. The content of NH₄-N in soil at 5th leaf stage was higher in top dressing plots(T2, T3) compared with basal application(T1), at 7th leaf stage it was most in top dressed at 3rd leaf and 5th leaf stage, but there was no difference at heading stage.
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