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Original Articles

Estimation of nitrogen release from coated urea using the Richards function and investigation of the release parameters using simulation models

Pages 693-701 | Received 25 Feb 2000, Accepted 17 May 2000, Published online: 04 Jan 2012

References

  • Fujita , T. , Maeda , S. , Shibata , M. and Takahashi , T. 1990 . Developments for coated fertilizer (Hihuku hiryou ni kansuru kaihatu) . Fertilizer (Hiryou) , 28 : 69 – 79 . (in Japanese)
  • Hara , Y. 2000 . Application of the Richards function to nitrogen release from coated urea at a constant temperature and relationships among the calculated parameters . Soil Sci. Plant Nutr. , 46 : 683 – 691 .
  • Ishibashi , E. , Konno , T. and Kimoto , H. 1992 . Estimation of the nitrogen liquation of coated ureas by kinetic method . Jpn. J. Soil Sci. Plant Nutr. , 63 : 664 – 668 . (in Japanese with English summary)
  • Kobayashi , A. , Fujisawa , E. , Kubo , S. and Hanyuu , T. 1997 . A mechanism of nutrient release from resin-coated fertilizers and its estimation by kinetic methods 3. An improved simulation model for nutrient release from coated urea with Gaussian correction . Jpn. J. Soil Sci. Plant Nutr. , 68 : 487 – 492 . (in Japanese with English summary)
  • Konno , T. and Sugihara , S. 1986 . Temperature index for characterizing biological activity in soil and its application to decomposition of soil organic matter . Bull. Natl. Inst. Agro-Environ. Sci. , 1 : 51 – 68 . (in Japanese with English summary)
  • Shibuya , T. and Hayashi , I. 1984 . A mathematical model for the time-variation of the rate of seed germination . Jap. J. Ecol. , 34 : 361 – 363 .

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