An assessment of greenhouse gas emissions: implications for the Australian cotton industry

SUMMARY The majority of cotton produced in Australia is exported. The Australian cotton industry must maintain product quality in order to remain globally competitive. In addition, carbon-conscious consumers need reassurance that the system used to grow the product is environmentally sustainable. The aim of the present study was to estimate greenhouse gas (GHG) emissions due to various farm inputs in three common types of cotton farming systems on the Darling Downs region, southern Queensland. Analysis revealed that GHG emissions for dryland solid-plant and dryland double-skip cotton farming systems are similar, but emissions are much higher for irrigated solid-plant cotton farming (1367, 1274 and 4841 kg CO2e/ha, respectively). However, if comparisons of GHG emissions are based on yield (per tonne), the positions of dryland double-skip farming and dryland solid-plant farming are reversed, but the position of irrigated cotton farming still remains as the highest GHG emitter. If the cotton industry comes under the Australian Government Carbon Pollution Reduction Scheme (CPRS) without any subsidies and preconditions, and with a carbon price of A$25/t CO2e, the costs borne by each system would be A$66.8/t for the irrigated cotton industry, A$39.7/t for the dryland solid-plant cotton industry and A$43.6/t for the dryland double-skip cotton industry. This suggests that irrigated cotton would be more profitable in financial terms but with heavy environmental sustainability costs.

[1]  D. Gunasekera,et al.  Climate Change - Issues and Challenges for Australian Agriculture and Forestry , 2007 .

[2]  Bill Stout,et al.  Handbook of Energy for World Agriculture , 1990 .

[3]  Liding Chen,et al.  The effects of global warming on soybean yields in a long-term fertilization experiment in Northeast China , 2009, The Journal of Agricultural Science.

[4]  Rattan Lal,et al.  Food Security and Environmental Quality in the Developing World , 2002 .

[5]  M. Semenov,et al.  The impact of climate change on sugarbeet yield in the UK: 1976–2004 , 2007, The Journal of Agricultural Science.

[6]  P. Peltonen-Sainio,et al.  Declining rapeseed yields in Finland: how, why and what next? , 2007, The Journal of Agricultural Science.

[7]  Rolf Sommer,et al.  Energy Use and CO2 Production in Tropical Agriculture and Means and Strategies for Reduction or Mitigation , 2004 .

[8]  A. Cowie,et al.  Options for including all lands in a future greenhouse gas accounting framework , 2007 .

[9]  John Gaunt,et al.  Bio-char Sequestration in Terrestrial Ecosystems – A Review , 2006 .

[10]  Jing Wu,et al.  Estimating Farm Equipment Depreciation: Which Functional Form is Best? , 2004 .

[11]  K. P. Pandey,et al.  Improving energy productivity in paddy production through benchmarking—An application of data envelopment analysis , 2006 .

[12]  S. Gower.  Patterns and Mechanisms of the Forest Carbon Cycle1 , 2003 .

[13]  D. Heenan,et al.  Long-term impact of rotation, tillage and stubble management on the loss of soil organic carbon and nitrogen from a Chromic Luvisol , 2003 .

[14]  S. Hatfield-Dodds.  Rural Australia providing climate solutions , 2007 .

[15]  Shahbaz Mushtaq,et al.  Greenhouse gas emissions from rice farming inputs: a cross-country assessment , 2009, The Journal of Agricultural Science.

[16]  P. Graham,et al.  Optimal technological choices in meeting Australian energy policy goals , 2003 .

[17]  Jo Smith,et al.  Greenhouse gas mitigation in agriculture , 2008, Philosophical Transactions of the Royal Society B: Biological Sciences.

[18]  Guangnan Chen,et al.  DEVELOPMENT OF ENERGYCALC - A TOOL TO ASSESS COTTON ON-FARM ENERGY USES , 2007 .

[19]  Zane R. Helsel,et al.  Energy in plant nutrition and pest control , 1987 .

[20]  Masanori Okazaki,et al.  Effects of charcoal addition on N2O emissions from soil resulting from rewetting air-dried soil in short-term laboratory experiments , 2007 .

[21]  D. Gunasekera,et al.  Climate Change - Impacts on Australian Agriculture , 2007 .

[22]  B. Stout,et al.  Energy for world agriculture. , 1979 .

[23]  R. Desjardins,et al.  Agricultural production, greenhouse gas emissions and mitigation potential , 2007 .

[24]  Rolf Sommer,et al.  Energy Use and CO 2 Production in Tropical Agriculture and Means and Strategies for Reduction or Mitigation , 2004 .

[25]  Z. Helsel.  Chapter 13 – Energy and Alternatives for Fertilizer and Pesticide Use , 1992 .

[26]  K. Chan,et al.  Scoping Paper: Soil Organic Carbon Sequestration Potential for Agriculture in NSW , 2008 .

[27]  R. Lal,et al.  Carbon emission from farm operations. , 2004, Environment international.

[28]  K. Hülsbergen,et al.  A method of energy balancing in crop production and its application in a long-term fertilizer trial , 2001 .

[29]  Armando Apan,et al.  A comparison of greenhouse gas emissions from inputs into farm enterprises in Southeast Queensland, Australia , 2007, Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering.

[30]  Harry C. Watson,et al.  Fuel-cycle greenhouse gas emissions from alternative fuels in Australian heavy vehicles , 2002 .

[31]  J. Skjemstad,et al.  Greenhouse Chemistry Not Only in the Atmosphere , 2004 .