Evaluation of Different Rates of Organic Manure and Water Management Practices on Methane Emission from Rice Production

2018 ◽  
Vol 8 (8) ◽  
Author(s):  
Ei Phyu Win ◽  
Kyaw Kyaw Win ◽  
Kyaw Ngwe ◽  
Than Da Min
Keyword(s):  
Water Management ◽  
Methane Emission ◽  
Management Practices ◽  
Organic Manure ◽  
Rice Production

scholarly journals Prediction of future methane emission from irrigated rice paddies in central Thailand under different water management practices

2016 ◽  
Vol 566-567 ◽  
pp. 641-651 ◽  
Author(s):  
Kazunori Minamikawa ◽  
Tamon Fumoto ◽  
Toshichika Iizumi ◽  
Nittaya Cha-un ◽  
Uday Pimple ◽  
...  
Keyword(s):  
Water Management ◽  
Methane Emission ◽  
Management Practices ◽  
Rice Paddies ◽  
Irrigated Rice ◽  
Central Thailand

scholarly journals Effects of Different Water Management and Fertilizer Applications on CO2 Fluxes from a Selected Myanmar Rice (Oryza sativa L.) Cultivar

2020 ◽  
pp. 22-37
Author(s):  
Saw Min ◽  
Martin Rulik
Keyword(s):  
Water Management ◽  
Co2 Emission ◽  
Management Practices ◽  
Oryza Sativa L ◽  
Management Practice ◽  
Co2 Flux ◽  
Organic Manure ◽  
Inorganic Fertilizer ◽  
Co2 Uptake ◽  
Co2 Fluxes

The application of nitrogen fertilizer and the water management practices are important to optimize potential yields in rice cultivation. Moreover, they may affect the emissions patterns of methane (CH4) and carbon dioxide (CO2) emission. Compared to methane, knowledge about the combined effects of different fertilizer rates together with different water management practices on CO2 fluxes are scarce. Therefore, this study aims to assess CO2 fluxes of a selected rice cultivar in response to different fertilizer applications and water management practices. The treatments included two different applications of inorganic fertilizer (recommended rate and farmer’s practice), organic manure application and water management practices; continuous flooding (CF) and alternate wetting and drying (AWD). Mean total CO2 flux in CF was -30.82 g CO2 m-2 d-1 during daytime and 29.64 g CO2 m-2 d-1 during nighttime. Surprisingly, the average net CO2 fluxes were negative under both CF (-49 mg CO2 m-2h-1) and AWD practices (-127 mg CO2 m-2h-1), indicating a net CO2 uptake by the rice plants. Inorganic fertilizer applications led to considerably higher net CO2 emissions compared to the control under both CF and AWD. Conversely, CO2 emission fluxes in the treatment with organic manure showed negative net CO2 fluxes under both water management practices and while revealing the same fresh biomass as observed in other treatments (inorganic fertilizer and control). Taken together, modifications of current cultivation systems toward using organic manure, that emit less CO2, could effectively mitigate CO2 impacts regardless of the selected water management practice.

Concepts and Practices for Improving Nitrogen Management for Vegetables

1992 ◽  
Vol 2 (1) ◽  
pp. 121-125 ◽  
Author(s):  
George J. Hochmuth
Keyword(s):  
Water Management ◽  
Management Practices ◽  
Management Strategies ◽  
N Fertilization ◽  
Nitrogen Management ◽  
Land Grant ◽  
Land Grant Universities ◽  
Production Practices ◽  
Negative Impacts ◽  
N Management

Efficient N management practices usually involve many potential strategies, but always involve choosing the correct amount of N and the coupling of N management to efficient water management. Nitrogen management strategies are integral parts of improved production practices recommended by land-grant universities such as the Institute of Food and Agricultural Sciences, Univ. of Florida. This paper, which draws heavily on research and experience in Florida, outlines the concepts and technologies for managing vegetable N fertilization to minimize negative impacts on the environment.

Economic incentives encourage farmers to improve water management in California

Water Policy ◽  
2006 ◽  
Vol 8 (3) ◽  
pp. 269-285 ◽  
Author(s):  
Dennis Wichelns
Keyword(s):  
Water Management ◽  
Program Implementation ◽  
Management Practices ◽  
Economic Incentives ◽  
Irrigation District ◽  
Drain Water ◽  
Scarce Resources ◽  
San Joaquin River ◽  
Water Volumes ◽  
Individual Use

Economic incentives are used in many situations to motivate improvements in the use of scarce resources. In some areas, implementing appropriate incentives is made challenging by the nature of existing institutions or the inability to assign property rights and measure individual use of key resources. Higher prices for irrigation water can motivate wiser use of water in regions where the opportunity cost of water is rising, due to increasing municipal, industrial and environmental demands. This paper describes how an increasing block-rate pricing structure was designed and implemented in an irrigation district in central California. The goals of the program were to improve water management practices and reduce the volume of subsurface drain water discharged into the San Joaquin River. Results describing reductions in average irrigation depths and drain water volumes, collected throughout the 1990s, demonstrate the potential for achieving resource management goals with economic incentives that motivate changes in farm-level management practices. Complementary incentive programs and issues regarding program implementation and the sustainability of drain water reduction efforts in an arid region also are discussed.

Agricultural best management practices and surface water improvement and management

1995 ◽  
Vol 31 (8) ◽  
pp. 109-121 ◽  
Author(s):  
D. L. Anderson ◽  
E. G. Flaig
Keyword(s):  
Water Management ◽  
Surface Water ◽  
Best Management Practices ◽  
Management Practices ◽  
Agricultural Runoff ◽  
South Florida ◽  
Lake Okeechobee ◽  
Runoff Water ◽  
Best Management ◽  
Management Plans

Restoration and enhancement of Lake Okeechobee and the Florida Everglades requires a comprehensive approach to manage agricultural runoff. The Florida Surface Water Improvement and Management (SWIM) Act of 1987 was promulgated to develop and implement plans for protecting Florida waters. The South Florida Water Management District was directed by Florida legislature to develop management plans for Lake Okeechobee (SWIM) and the Everglades ecosystem (Marjory Stoneman Douglas Everglades Protection Act of 1991). These plans require agriculture to implement best management practices (BMPs) to reduce runoff phosphorus (P) loads. The Lake Okeechobee SWIM plan established a P load reduction target for Lake Okeechobee and set P concentration limitations for runoff from non-point source agricultural sources. Agricultural water users in the Everglades Agricultural Area (EAA) are required to develop farm management plans to reduce P loads from the basin by 25%. The Everglades Forever Act of 1994 additionally emphasized linkage of these landscapes and consequent protection and restoration of the Everglades. Agricultural BMPs are being developed and implemented to comply with water management, environmental, and regulatory standards. Although BMPs are improving runoff water quality, additional research is necessary to obtain the best combination of BMPs for individual farms. This paper summarizes the development of comprehensive water management in south Florida and the agricultural BMPs carried out to meet regulatory requirements for Lake Okeechobee and the Everglades.

Managing Water Resources, Past and Present

2004 ◽  
Keyword(s):  
Water Management ◽  
Middle Ages ◽  
Southern Africa ◽  
Management Practices ◽  
Social Groups ◽  
Water Politics ◽  
European Water ◽  
The Usa ◽  
British Experience ◽  
Over Exploitation

A multi-disciplinary analysis of the evolution of water politics and policy by an international team of distinguished experts. Water management in the Middle Ages in Europe, its evolution in the USA, the elaboration of the European Water Framework Directive, the British experience of water management, the over-exploitation of African aquifers, and the evolution of the water situation in Southern Africa are all examined. This volume underlines the fact that only an integrative and interdisciplinary understanding can lead to genuinely improved water management practices that will not benefit some social groups at the expense of others.

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