The research aimed to assess better P fertilization method for wetland rice which used quickly dissolving P fertilizer given in split application. The research concluded that the application of quickly dissolving P fertilizer to Alfisol and Oxisol applied in split application twice (0 and 30 days after planting) and three times (0, 15 and 30 days after planting) increased the eficiency of P fertilization in wetland rice. The split application of 75 kg ha -1 (50% of recommended dose) in Alfisol

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... ielded dry seed as high as 6,374 kg ha -1 (at twice application), 6,280 kg ha -1 (at threetime application), while the control treatment yielded as high as 6,027 kg ha -1 . In Oxisol the yield of rice was 8,200 kg ha -1 for the control treatment, 8,027 kg ha -1 for the twice application and 8,440 kg ha -1 for the three time applications.