Upendra M. Sainju^*

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USDA, Agricultural Research Service, Northern Great Plains Agricultural Research Laboratory, Sidney, Montana, USA.
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Abstract: Little is known about the effect of management practices on net global warming potential (GWP) and greenhouse gas intensity (GHGI) that account for all sources and sinks of greenhouse gas (GHG) emissions in dryland cropping systems. The objective of this study was to compare the effect of a combination of tillage, cropping system, and N fertilization on GWP and GHGI under dryland cropping systems with various soil and climatic conditions from 2008 to 2011 in western North Dakota and eastern Montana, USA. Treatments in western North Dakota with sandy loam soil and 373 mm annual precipitation were conventional till malt barley (Hordeum vulgarie L.) with 67 kg N ha^-1 (CTB/N1), conventional till malt barley with 0 kg N ha^-1 (CTB/N0), no-till malt barley-pea (Pisum sativum L.) with 67 kg N ha^-1 (NTB-P/N1), no-till malt barley with 67 kg N ha^-1 (NTB/N1), and no-till malt barley with 0 kg N ha^-1 (NTB/N0). In eastern Montana with loam soil and 350 mm annual precipitation, treatments were conventional till malt barley-fallow with 80 kg N ha^-1 (CTB-F/N1), conventional till malt barley-fallow with 0 kg N ha^-1 (CTB-F/N0), no-till malt barley-pea with 80 kg N ha^-1 (NTB-P/N1), no-till malt barley with 80 kg N ha^-1 (NTB/N1), and no-till malt barley with 0 kg N ha^-1 (NTB/N0). Carbon dioxide sink as soil C sequestration rate at the 0 - 10 cm depth was greater in NTB-P/N1 and NTB/N1 than the other treatments at both sites and greater in eastern Montana than western North Dakota. Carbon dioxide sources were greater with N fertilization than without and greater with conventional till than no-till. Soil total annual N2O and CH4 fluxes varied among treatments, years, and locations. Net GWP and GHGI were lower in NTB-P/N1 than the other treatments in western North Dakota and lower in NTB-P/N1 and NTB/N1 than the other treatments in eastern Montana. Net GWP across similar treatments was lower in eastern Montana than western North Dakota, but GHGI was similar. Annualized crop yield was greater in the treatments with N fertilization than without. Because of greater grain yield but lower GWP and GHGI, no-till malt barley-pea rotation with adequate N fertilization can be used as a robust management practice to mitigate net GHG emissions while sustaining dryland crop yields, regardless of soil and climatic conditions. Loam soil reduced GWP and crop yields compared with sandy loam soil.

Keywords: Carbon Sequestration, Crop Yields, Dryland Cropping Systems, Greenhouse Gas Mitigation, Management Practices

Cite this paper: Sainju, U. (2015) Comparison of Net Global Warming Potential and Greenhouse Gas Intensity Affected by Management Practices in Two Dryland Cropping Sites. Journal of Environmental Protection, 6, 1042-1056. doi: 10.4236/jep.2015.69092.

References

[1]   Robertson, G.P., Paul, E. and Harwood, R. (2000) Greenhouse Gases in Intensive Agriculture: Contribution of Individual Gases to the Radiative Forcing of the Atmosphere. Science, 289, 1922-1925.
http://dx.doi.org/10.1126/science.289.5486.1922

[2]   Mosier, A.R., Halvorson, A.D., Peterson, C.A., Robertson, G.P. and Sherrod, L. (2005) Measurement of Net Global Warming Potential in Three Agroecosystems. Nutrient Cyclingin Agroecosystems, 72, 67-76.
http://dx.doi.org/10.1007/s10705-004-7356-0

[3]   Mosier, A.R., Halvorson, A.D., Reule, C.A. and Liu, X.J. (2006) Net Global Warming Potential and Greenhouse Gas Intensity in Irrigated Cropping Systems in Northeastern Colorado. Journal of Environmental Quality, 35, 1584-1598.
http://dx.doi.org/10.2134/jeq2005.0232

[4]   Liebig, M.A., Tanaka, D.L. and Gross, J.R. (2010) Fallow Effects on Soil Carbon and Greenhouse Gas Flux in Central North Dakota. Soil Science Society of America Journal, 74, 358-365.
http://dx.doi.org/10.2136/sssaj2008.0368

[5]   Schlesinger, W.H. (1999) Carbon Sequestration in Soils. Science, 284, 2095-2097.
http://dx.doi.org/10.1126/science.284.5423.2095

[6]   West, T.O. and Marland, G. (2002) A Synthesis of Carbon Sequestration, Carbon Emissions, and Net Carbon Flux in Agriculture: Comparing Tillage Practices in the United States. Agriculture Ecosystem and Environment, 91, 217-232.
http://dx.doi.org/10.1016/S0167-8809(01)00233-X

[7]   Paustian, K., Robertson, G.P. and Elliott, E.T. (1995) Management Impacts on Carbon Storage and Gas Fluxes in Mid-Latitudes Cropland. In: Lal, R., Ed., Soils and Global Climate Change, Advances in Soil Science, CRC Press, Boca Raton, 69-83.

[8]   Robertson, G.P. and Grace, P.R. (2004) Greenhouse Gas Fluxes in Tropical and Temperate Agriculture: The Need for a Full-Cost Accounting of Global Warming Potentials. Environmental Development and Sustainability, 6, 51-63.
http://dx.doi.org/10.1023/B:ENVI.0000003629.32997.9e

[9]   Drury, C.F., Reynolds, W.D., Tan, C.S., Welacky, T.W., Calder, W. and McLaughlin, N.B. (2006) Emissions of Nitrous Oxide and Carbon Dioxide: Influence of Tillage Type and Nitrogen Placement Depth. Soil Science Society of America Journal, 70, 570-581.
http://dx.doi.org/10.2136/sssaj2005.0042

[10]   Follett, R.F. (2001) Soil Management Concepts and Carbon Sequestration in Cropland Soils. Soil and Tillage Research, 61, 77-92.
http://dx.doi.org/10.1016/S0167-1987(01)00180-5

[11]   Sainju, U.M., Jabro, J.D. and Caesar-TonThat, T. (2010) Tillage, Cropping Sequence, and Nitrogen Fertilization Effects on Dryland Soil Carbon Dioxide Emission and Carbon Content. Journal of Environmental Quality, 39, 935-945.
http://dx.doi.org/10.2134/jeq2009.0223

[12]   Dusenbury, M.P., Engel, R.E., Miller, P.R., Lemke, R.L. and Wallander, R. (2008) Nitrous Oxide Emissions from a Northern Great Plains Soil as Influenced by Nitrogen Management and Cropping Systems. Journal of Environmental Quality, 37, 542-550.
http://dx.doi.org/10.2134/jeq2006.0395

[13]   Robertson, G.P. and Vitousek, P.M. (2009) Nitrogen in Agriculture: Balancing the Cost of an Essential Resource. Annual Review in Environmental Resources, 34, 97-125.
http://dx.doi.org/10.1146/annurev.environ.032108.105046

[14]   Bronson, K.F. and Mosier, A.R. (1994) Suppression of Methane Oxidation in Aerobic Soil by Nitrogen Fertilizers, Nitrification Inhibitors, and Urease Inhibitors. Biology and Fertility of Soils, 17, 263-268.
http://dx.doi.org/10.1007/BF00383979

[15]   Al-Kaisi, M.M., Kruse, M.L. and Sawyer, J.E. (2008) Effect of Nitrogen Fertilizer Application on Growing Season Carbon Dioxide Emissions in a Corn-Soybean Rotation. Journal of Environmental Quality, 37, 325-332.
http://dx.doi.org/10.2134/jeq2007.0240

[16]   Bauer, A. and Black, A.L. (1994) Quantification of the Effect of Soil Organic Matter Content on Soil Productivity. Soil Science Society of America Journal, 58, 185-193.
http://dx.doi.org/10.2136/sssaj1994.03615995005800010027x

[17]   Sainju, U.M., Jabro, J.D. and Stevens, W.B. (2008) Soil Carbon Dioxide Emission and Carbon Content as Affected by Irrigation, Tillage, Cropping System, and Nitrogen Fertilization. Journal of Environmental Quality, 37, 98-106.
http://dx.doi.org/10.2134/jeq2006.0392

[18]   McCarl, B.A. and Schneider, U.A. (2001) Greenhouse Gas Mitigation in US Agriculture and Forestry. Science, 294, 2481-2482.
http://dx.doi.org/10.1126/science.1064193

[19]   Council for Agricultural Science and Technology (2003) Agriculture’s Response to Global Climate Change. CAST, Ames.

[20]   Sainju, U.M., Caesar-TonThat, T. and Caesar, A. (2012) Comparison of Soil Carbon Dioxide Flux Measurements by Static and Portable Chambers in Various Management Practices. Soil and Tillage Research, 118, 123-131.
http://dx.doi.org/10.1016/j.still.2011.10.020

[21]   Intergovernmental Panel on Climate Change, IPCC (2007) Climate Change 2007. The Physical Science Basis. 4th Assessment Report, IPCC Secretariat, Geneva.

[22]   Crutzen, P.J., Mosier, A.R., Smith, K.A. and Winiwarter, W. (2008) N2O Release from Agro-Biofuel Production Negates Global Warming Reduction by Replacing Fossil Fuels. Atmospheric Chemistry and Physics, 8, 389-395.
http://dx.doi.org/10.5194/acp-8-389-2008

[23]   Lal, R. (2004) Carbon Emission from Farm Operations. Environmental International, 30, 981-990.
http://dx.doi.org/10.1016/j.envint.2004.03.005

[24]   Nelson, D.W. and Sommers, L.E. (1996) Total Carbon, Organic Carbon, and Organic Matter. In: Sparks, D.L., Ed., Methods of Soil Analysis, Part 3, Chemical Methods, Book Series 5, Soil Science Society of America, Madison, 961-1010.

[25]   Littell, R.C., Milliken, G.A., Stroup, W.W. and Wolfinger, R.D. (1996) SAS System for Mixed Models. SAS Institute Inc., Cary.

[26]   Halvorson, A.D., Wienhold, B.J. and Black, A.L. (2002) Tillage, Nitrogen, and Cropping System Effects on Soil Carbon Sequestration. Soil Science Society of America Journal, 66, 906-912.
http://dx.doi.org/10.2136/sssaj2002.9060

[27]   Halvorson, A.D., Reule, C.A. and Follett, R.F. (1999) Nitrogen Fertilization Effects on Soil Carbon and Nitrogen in a Dryland Cropping System. Soil Science Society of America Journal, 63, 912-917.
http://dx.doi.org/10.2136/sssaj1999.634912x

[28]   Sylvia, D.M., Fuhrman, J.J., Hartel, P.G. and Zuberer, D.A. (1998) Principles and Applications of Soil Microbiology. Prentice Hall, Upper Saddle River.

[29]   Archer, D.W. and Halvorson, A.D. (2010) Greenhouse Gas Mitigation Economics for Irrigated Cropping Systems in Northeastern Colorado. Soil Science Society of America Journal, 74, 446-452.
http://dx.doi.org/10.2136/sssaj2009.0080

[30]   Lemke, R.L., Zhong, Z., Campbell, C.A. and Zentner, R. (2007) Can Pulse Crops Play a Role in Mitigating Greenhouse Gases from North American Agriculture? Agronomy Journal, 99, 1719-1725.
http://dx.doi.org/10.2134/agronj2006.0327s

[31]   Barsotti, J.L., Sainju, U.M., Lenssen, A.W., Montagne, C. and Hatfield, P.G. (2013) Net Greenhouse Gas Emissions Affected by Sheep Grazing in Dryland Cropping Systems. Soil Science Society of America Journal, 77, 1012-1025.
http://dx.doi.org/10.2136/sssaj2012.0386

[32]   Pittelkow, C.M., Adviento-Borbe, M.A., Hill, J.E., Six, J., van Kissel, C. and Linquist, B.A. (2013) Yield-Scaled Global Warming Potential of Annual Nitrous Oxide and Methane Emissions from Continuously Flooded Rice in Response to Nitrogen Input. Agriculture, Ecosystem and Environment, 177, 10-20.
http://dx.doi.org/10.1016/j.agee.2013.05.011

[33]   Adviento-Borbe, M.A., Haddix, M.L., Binder, D.L., Walters, D.A. and Dobermann, A. (2007) Soil Greenhouse Gas Fluxes and Global Warming Potential in Four High-Yielding Maize Systems. Global Change Biology, 13, 1972-1988.
http://dx.doi.org/10.1111/j.1365-2486.2007.01421.x

[34]   Miller, P.R., McConkey, B., Clayton, G.W., Brandt, S.A., Staricka, J.A., Johnston, A.M., Lafond, G.P., Schatz, B.G., Baltensperger, D.D. and Neill, K.E. (2002) Pulse Crop Adaptation in the Northern Great Plains. Agronomy Journal, 94, 261-272.
http://dx.doi.org/10.2134/agronj2002.0261