Water management — A tool for methane mitigation from irrigated paddy fields

2010 ◽  
Vol 408 (5) ◽  
pp. 1085-1090 ◽  
Author(s):  
Larisha Tyagi ◽  
Babita Kumari ◽  
S.N. Singh
Keyword(s):  
Water Management ◽  
Paddy Fields ◽  
Methane Mitigation

Runoff pattern of pesticides from paddy fields in the catchment area of Rikimaru reservoir, Japan

1994 ◽  
Vol 30 (7) ◽  
pp. 137-144 ◽  
Author(s):  
O. Nagafuchi ◽  
T. Inoue ◽  
S. Ebise
Keyword(s):  
Water Management ◽  
Linear Correlation ◽  
Irrigation Water ◽  
Catchment Area ◽  
Paddy Fields ◽  
Raw Water ◽  
Irrigation Water Management ◽  
Pesticide Runoff

Patterns of runoff behaviours in concentration and loading of pesticides from paddy fields have been intensively observed in the catchment area of Rikimaru Reservoir, mainly during the regular application period of fungicide during the summer. The runoff characteristics of three pesticides (pyroquilone, isoprothiolane and flutolanil) from paddy fields to the drainage river differed from one another due to their water solubilities. The linear correlation between the water solubilities and the amounts of pesticide runoff loadings from paddy fields to the drainage river and reservoir during dry weather days was confirmed as good on log-log paper. To reduce the risk to raw water for drinking in the reservoir the method of irrigation water management for paddy fields should be improved.

scholarly journals Development of SWAT-Paddy for Simulating Lowland Paddy Fields

2018 ◽  
Author(s):  
Ryota Tsuchiya ◽  
Tasuku Kato ◽  
Jaehak Jeong ◽  
Jeffrey G. Arnold
Keyword(s):  
Water Management ◽  
Assessment Tool ◽  
Irrigation Management ◽  
Soil Layer ◽  
Infiltration Rate ◽  
Agricultural Watershed ◽  
Paddy Fields ◽  
Agricultural Watersheds ◽  
Discharge Rates ◽  
Paddy Cultivation

The recent increase in global consumption of rice has led to increased demand for sustainable water management in paddy cultivation. In this study, we propose an enhanced paddy simulation module to be introduced to Soil and Water Assessment Tool (SWAT) to evaluate the sustainability of paddy cultivation. The enhancements added to SWAT include: (1) modification of water balance calculation for impounded fields, (2) addition of an irrigation management option for paddy fields that are characterized by flood irrigation with target water depth, and (3) addition of a puddling operation that influences the water quality and infiltration rate of the top soil layer. In a case study, the enhanced model, entitled SWAT-Paddy, was applied to an agricultural watershed in Japan. The results showed that the SWAT-Paddy successfully represented paddy cultivation, water management, and discharge processes. Simulated daily discharge rates with SWAT-Paddy (R2 = 0.8) were superior to the SWAT result (R2 = 0.002). SWAT-Paddy allows the simulation of paddy management processes realistically, and thus can enhance model accuracy in paddy-dominant agricultural watersheds.

scholarly journals Climate-Based Suitability Assessment for Methane Mitigation by Water Saving Technology in Paddy Fields of the Central Plain of Thailand

2020 ◽  
Vol 4 ◽  
Author(s):  
Punyaporn Prangbang ◽  
Kazuyuki Yagi ◽  
Jorrel Khalil S. Aunario ◽  
Bjoern Ole Sander ◽  
Reiner Wassmann ◽  
...  
Keyword(s):  
Water Saving ◽  
Paddy Fields ◽  
Methane Mitigation ◽  
Central Plain ◽  
Suitability Assessment
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