Relationship between farming activities and water quality variations of drainage water from paddy fields area

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We paid attention to relationship between farming activities and changes in drainage water quality from a paddy fields area, especially in land preparation period for transplanting of paddy. Drainage water quality during land preparation period became highest concentration of all items through a year. In 2006, average water qualities in the period were 7.9 mg/L in T-N, 1.6 mg/L in T-P, 15.3 mg/L in TOC, and 372 mg/L in SS. In addition, maximum values in the period were 36.2 mg/L in T-N, 12.3 mg/L in T-P, 83.2 mg/L in TOC, and 3020 mg/L in SS. The changes in water quality moved on with land preparation by tractor and drainage gate operation on each paddy field by farmers. Moreover, relatively high concentrations of drainage water were also observed during non-irrigation period. As no agricultural activities were done during the period, it is considered that residual nutrient in soil will infiltrate by rain water and flow to the drainage channel.

Original languageEnglish
Title of host publicationWorld Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
Volume316
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventWorld Environmental and Water Resources Congress 2008: Ahupua'a - Honolulu, HI, United States
Duration: May 12 2008May 16 2008

Other

OtherWorld Environmental and Water Resources Congress 2008: Ahupua'a
CountryUnited States
CityHonolulu, HI
Period5/12/085/16/08

Fingerprint

drainage water
paddy field
Drainage
Water quality
water quality
Water
drainage
Nutrients
Rain
nutrient
Soils
land
soil

Keywords

  • Agriculture
  • Drainage
  • Water quality

ASJC Scopus subject areas

  • Management, Monitoring, Policy and Law
  • Water Science and Technology
  • Pollution

Cite this

Somura, H., Takeda, I., & Mori, Y. (2008). Relationship between farming activities and water quality variations of drainage water from paddy fields area. In World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008 (Vol. 316) https://doi.org/10.1061/40976(316)110

Relationship between farming activities and water quality variations of drainage water from paddy fields area. / Somura, Hiroaki; Takeda, Ikuo; Mori, Yasushi.

World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008. Vol. 316 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Somura, H, Takeda, I & Mori, Y 2008, Relationship between farming activities and water quality variations of drainage water from paddy fields area. in World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008. vol. 316, World Environmental and Water Resources Congress 2008: Ahupua'a, Honolulu, HI, United States, 5/12/08. https://doi.org/10.1061/40976(316)110
Somura H, Takeda I, Mori Y. Relationship between farming activities and water quality variations of drainage water from paddy fields area. In World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008. Vol. 316. 2008 https://doi.org/10.1061/40976(316)110
Somura, Hiroaki ; Takeda, Ikuo ; Mori, Yasushi. / Relationship between farming activities and water quality variations of drainage water from paddy fields area. World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008. Vol. 316 2008.
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