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    • Studies on The Availability of Azolla N and Urea N for Rice Growth Using 15N 

      E.L. Sisworo | D.L. Eskew | W.H. Sisworo | H. Rasjid | H. Kadarusman (1989)
      Field experiments (20 m2 plots) were conducted to compare Azolla and urea as N sources for rice (Oryza sativa L.) in both the wet and dry seasons. Parallel microplot (1 m2) experiments were conducted using 15N. A total of ...