Reducing greenhouse gas emissions, water use, and grain arsenic levels in rice systems

2014 ◽  
Vol 21 (1) ◽  
pp. 407-417 ◽  
Author(s):  
Bruce A. Linquist ◽  
Merle M. Anders ◽  
Maria Arlene A. Adviento-Borbe ◽  
Rufus L. Chaney ◽  
L. Lanier Nalley ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Gas Emissions

scholarly journals Optimization of the Water and Fertilizer of Rice in the Cold Field and the Biochar Application Amount Based on RAGA Model

2021 ◽  
Vol 20 (3) ◽  
Author(s):  
Y. Li ◽  
S. Yi ◽  
Y. Lin ◽  
S. Liu
Keyword(s):  
Water Use Efficiency ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Greenhouse Gas Emission ◽  
Rice Yield ◽  
Regression Equations ◽  
Gas Emissions ◽  
Use Efficiency ◽  
Application Volume

This paper proposes an optimization method based on the RAGA model. Taking rice from a cold area as the research object, this article selects irrigation volume, nitrogen application volume, and biochar application volume as experimental factors, and rice yield, water use efficiency, greenhouse gas emission comprehensive warming potential as influencing indicators. The research design is D311 Field trials by 3 factors of 5 levels of saturation. Hence, we can obtain the data on rice yield, water use efficiency, greenhouse gas emissions and comprehensive warming potential under different levels of water and fertilizer, and biochar application, and regression equations were established respectively. The RAGA model was used to simulate the regression equations. The optimal combination of water and fertilizer, and biochar was obtained as follows: irrigation amount is 7230 m3.hm-2, nitrogen fertilizer application amount is 92.13 kg.hm-2, and biochar application amount is 30 t.hm-2. The optimal rice yield obtained under this combination is 9452.20 kg.hm-2. The water use efficiency is 1.94 kg.m-3, and the comprehensive warming potential of greenhouse gas emissions is 4546.73 kg.hm-2. The combined application of water and fertilizer, and biochar optimized by this model can provide a theoretical basis for achieving high yield, water-saving, and emission reduction of rice in cold areas, and it can also provide a reliable calculation method and idea for solving similar optimization problems in the field of agricultural production.

scholarly journals The Impacts of Dietary Change on Greenhouse Gas Emissions, Land Use, Water Use, and Health: A Systematic Review

PLoS ONE ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. e0165797 ◽  
Author(s):  
Lukasz Aleksandrowicz ◽  
Rosemary Green ◽  
Edward J. M. Joy ◽  
Pete Smith ◽  
Andy Haines
Keyword(s):  
Systematic Review ◽  
Land Use ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Dietary Change ◽  
Gas Emissions

scholarly journals Socio-Technical Changes for Sustainable Rice Production: Rice Husk Amendment, Conservation Irrigation, and System Changes

2021 ◽  
Vol 3 ◽  
Author(s):  
Benjamin R. K. Runkle ◽  
Angelia L. Seyfferth ◽  
Matthew C. Reid ◽  
Matthew A. Limmer ◽  
Beatriz Moreno-García ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Toxic Metal ◽  
Climate Impacts ◽  
Rice Production ◽  
Rice Husks ◽  
Gas Emissions ◽  
Production Practices ◽  
Field Production

Rice is a staple food and primary source of calories for much of the world. However, rice can be a dietary source of toxic metal(loid)s to humans, and its cultivation creates atmospheric greenhouse gas emissions and requires high water use. Because rice production consumes a significant amount of natural resources and is a large part of the global agricultural economy, increasing its sustainability could have substantial societal benefits. There are opportunities for more sustainable field production through a combination of silicon (Si) management and conservation irrigation practices. As a Si-rich soil amendment, rice husks can limit arsenic and cadmium uptake, while also providing plant vigor in drier soil conditions. Thus, husk addition and conservation irrigation may be more effective to attenuate the accumulation of toxic metal(loid)s, manage water usage and lower climate impacts when implemented together than when either is implemented separately. This modified field production system would take advantage of rice husks, which are an underutilized by-product of milled rice that is widely available near rice farm sites, and have ~10% Si content. Husk application could, alongside alternate wetting and drying or furrow irrigation management, help resolve multiple sustainability challenges in rice production: (1) limit arsenic and cadmium accumulation in rice; (2) minimize greenhouse gas emissions from rice production; (3) decrease irrigation water use; (4) improve nutrient use efficiency; (5) utilize a waste product of rice processing; and (6) maintain plant-accessible soil Si levels. This review presents the scientific basis for a shift in rice production practices and considers complementary rice breeding efforts. It then examines socio-technical considerations for how such a shift in production practices could be implemented by farmers and millers together and may bring rice production closer to a bio-circular economy. This paper's purpose is to advocate for a changed rice production method for consideration by community stakeholders, including producers, millers, breeders, extension specialists, supply chain organizations, and consumers, while highlighting remaining research and implementation questions.

Resource use and environmental impacts from beef production in eastern Australia investigated using life cycle assessment

2016 ◽  
Vol 56 (5) ◽  
pp. 882 ◽  
Author(s):  
Stephen Wiedemann ◽  
Eugene McGahan ◽  
Caoilinn Murphy ◽  
Mingjia Yan
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Fresh Water ◽  
Water Use ◽  
Water Consumption ◽  
Arable Land ◽  
Beef Production ◽  
Land Occupation ◽  
Gas Emissions ◽  
Eastern Australia

Resource use and environmental impacts are important factors relating to the sustainability of beef production in Australia. This study used life cycle assessment to investigate impacts from grass-finished beef production in eastern Australia to the farm gate, reporting impacts per kilogram of liveweight (LW) produced. Mean fossil fuel energy demand was found to vary from 5.6 to 8.4 MJ/kg LW, mean estimated fresh water consumption from 117.9 to 332.4 L/kg LW and crop land occupation from 0.3 to 6.4 m2/kg LW. Mean greenhouse gas emissions ranged from 10.6 to 12.4 kg CO2-e/kg LW (excluding land use and direct land-use change emissions) and were not significantly different (P > 0.05) for export or domestic market classes. Enteric methane was the largest contributor to greenhouse gas emissions, and multiple linear regression analysis revealed that weaning rate and average daily gain explained 80% of the variability in supply chain greenhouse gas emissions. Fresh water consumption was found to vary significantly among individual farms depending on climate, farm water supply efficiency and the use of irrigation. The impact of water use was measured using the stress-weighted water use indicator, and ranged from 8.4 to 104.2 L H2O-e/kg LW. The stress-weighted water use was influenced more by regional water stress than the volume of fresh water consumption. Land occupation was assessed with disaggregation of crop land, arable pasture land and non-arable land, which revealed that the majority of beef production utilised non-arable land that is unsuitable for most alternative food production systems.

scholarly journals Algal food and fuel coproduction can mitigate greenhouse gas emissions while improving land and water-use efficiency

2016 ◽  
Vol 11 (11) ◽  
pp. 114006 ◽  
Author(s):  
Michael J Walsh ◽  
Léda Gerber Van Doren ◽  
Deborah L Sills ◽  
Ian Archibald ◽  
Colin M Beal ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Gas Emissions ◽  
Algal Food ◽  
Use Efficiency

Implications of high renewable electricity penetration in the U.S. for water use, greenhouse gas emissions, land-use, and materials supply

2014 ◽  
Vol 123 ◽  
pp. 368-377 ◽  
Author(s):  
Doug Arent ◽  
Jacquelyn Pless ◽  
Trieu Mai ◽  
Ryan Wiser ◽  
Maureen Hand ◽  
...  
Keyword(s):  
Land Use ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Water Use ◽  
Renewable Electricity ◽  
Gas Emissions ◽  
The U.S
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