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Influence of puddling procedures on the quality of rice paddy drainage water

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  • Somura, Hiroaki
  • Takeda, Ikuo
  • Mori, Yasushi

Abstract

Drainage water quality in rice paddies was strongly influenced by the puddling of soil in the paddy fields by tractors and in response to opening of drainage gates. The concentrations of contaminants in drainage water increased rapidly when the puddling process began and were maintained at high concentrations throughout the puddling period. Moreover, the high concentrations did not decrease immediately after the puddling procedures ceased. Additionally, the ratio of dissolved nitrogen and phosphorous to total nitrogen and total phosphorous increased daily during the last half of the puddling period, due to discharge of chemical fertilizers with the drainage water. Also, the loads of particulate nitrogen and phosphorus discharged during the puddling period were larger than the loads discharge during irrigation. The discharge from paddy fields during puddling also increased the total annual contaminant load.

Suggested Citation

  • Somura, Hiroaki & Takeda, Ikuo & Mori, Yasushi, 2009. "Influence of puddling procedures on the quality of rice paddy drainage water," Agricultural Water Management, Elsevier, vol. 96(6), pages 1052-1058, June.
    • Handle: RePEc:eee:agiwat:v:96:y:2009:i:6:p:1052-1058
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    References listed on IDEAS

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    1. Feng, Y. W. & Yoshinaga, I. & Shiratani, E. & Hitomi, T. & Hasebe, H., 2004. "Characteristics and behavior of nutrients in a paddy field area equipped with a recycling irrigation system," Agricultural Water Management, Elsevier, vol. 68(1), pages 47-60, July.
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    Cited by:

    1. Hama, Takehide & Nakamura, Kimihito & Kawashima, Shigeto, 2010. "Effectiveness of cyclic irrigation in reducing suspended solids load from a paddy-field district," Agricultural Water Management, Elsevier, vol. 97(3), pages 483-489, March.

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