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.
| Original language | English |
|---|---|
| Pages (from-to) | 1052-1058 |
| Number of pages | 7 |
| Journal | Agricultural Water Management |
| Volume | 96 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 2009 |
| Externally published | Yes |
Fingerprint
Keywords
- Drainage water
- Load discharge
- Puddling and transplanting period
ASJC Scopus subject areas
- Agronomy and Crop Science
- Soil Science
- Water Science and Technology
- Earth-Surface Processes
Cite this
Influence of puddling procedures on the quality of rice paddy drainage water. / Somura, Hiroaki; Takeda, Ikuo; Mori, Yasushi.
In: Agricultural Water Management, Vol. 96, No. 6, 06.2009, p. 1052-1058.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of puddling procedures on the quality of rice paddy drainage water
AU - Somura, Hiroaki
AU - Takeda, Ikuo
AU - Mori, Yasushi
PY - 2009/6
Y1 - 2009/6
N2 - 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.
AB - 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.
KW - Drainage water
KW - Load discharge
KW - Puddling and transplanting period
UR - http://www.scopus.com/inward/record.url?scp=62249130838&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=62249130838&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2008.12.005
DO - 10.1016/j.agwat.2008.12.005
M3 - Article
VL - 96
SP - 1052
EP - 1058
JO - Agricultural Water Management
JF - Agricultural Water Management
SN - 0378-3774
IS - 6
ER -