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Human Labour and Green Manure, Two Overlooked Factors for Energy Analysis in Agriculture

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Genetics, Biofuels and Local Farming Systems

Part of the book series: Sustainable Agriculture Reviews ((SARV,volume 7))

Abstract

Agriculture is both a “producer” and a “consumer” of energy. Since useful energy is in ever shorter supply and energy use is a pollution factor solutions are needed for enhancing production while reducing inputs. To this end it is necessary to get accurate data and adopt unequivocal analytic procedures permitting to compare and rank contrasting agricultural systems. In this report we show that two basic points are frequently mishandled in elaborating energy balances in agriculture: (1) the energy input of human labour and (2) the energy requirement for producing and applying organic manure. We show that the energy in human labour is often underestimated, probably at about 1/100 of its real value. It is also demonstrated that obtaining nitrogen from green manure is not less energy demanding than from synthetic fertilizers, opposite to the general belief. The correct evaluation of such two items would radically change the results usually obtained when working out energy balances, particularly when comparing organic and non-organic systems. Some scientific papers flawed with wrong assumptions and consequently conveying wrong information are listed. Spreading such misinformation seriously threatens the progress towards the sustainability of agricultural systems, since human labour and green manure are heavily conditioning energy balances, that in turn impact social, economical and environmental sustainability.

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References

  • Altieri M (2002) Lectures at the course on sustainable agriculture. Mediterranean Agronomic Institute of Bari, Bari

    Google Scholar 

  • Aronsson H, Torstensson G, Bergström L (2007) Leaching and crop uptake of N, P and K from organic and conventional cropping systems on a clay soil. Soil Use Manage 23:71–81. doi:10.1111/j.1475–2743.2006.00067.x

    Article  Google Scholar 

  • Bailey AP, Basford WD, Penlington N, Park JR, Keatinge JDH, Rehman T, Tranter RB, Yates CM (2003) A comparison of energy use in conventional and integrated arable farming systems in the UK. Agric Ecosyst Environ 97:241–253. doi:10.1016/S0167-8809(03)00115-4

    Article  Google Scholar 

  • Balfour E (1977) Towards a sustainable agriculture – the living soil. Available from soil and health library. http://www.soilandhealth.org/01aglibrary/01principles.html

  • Bankier C, Gale S (2006) Energy payback of roof mounted photovoltaic cells. The Environ Eng 7(4):11–14

    Google Scholar 

  • Berry PM, Sylvester-Bradley R, Philipps L, Hatch DJ, Cuttle SP, Rayns FW, Gosling P (2002) Is the productivity of organic farms restricted by the supply of available nitrogen? Soil Use Manage 18:248–255. doi:10.1079/SUM2002129

    Article  Google Scholar 

  • Bertilsson G, Kirschmann H, Bergström L (2008) Energy analysis of organic and conventional agricultural systems. In: Kirchmann H, Bergström L (eds) Organic crop production – ambitions and limitations. Springer, Dordrecht, pp 173–188, doi: 10.1007/978-1-40209316-6_9

    Google Scholar 

  • Cameron KC, Wild A (1984) Potential aquifer pollution from nitrate leaching following the plowing of temporary grasslands. J Environ Qual 13:274–278

    Article  Google Scholar 

  • Cleveland C (Lead Author), Costanza R (Topic Editor) (2010) Net energy analysis. In: Cleveland CJ (ed) Encyclopedia of Earth. Environmental information coalition, national council for science and the environment, Washington, DC. First published in the Encyclopedia of Earth 14 Sep 2006, Last revised 23 Jul2010. Available at http://www.eoearth.org/article/Net_energy_analysis

  • Crews TE, People MB (2004) Legume versus fertilizer sources of nitrogen: ecological tradeoffs and human needs. Agric Ecosyst Environ 102:279–297. doi:10.1016/j.agee.2003.09.018

    Article  Google Scholar 

  • Dawson CJ (2008) Food, fertilisers and footprints – an environmental essay. Paper presented to The International Fertiliser Society at a meeting in London, on 17th Apr 2008. ISBN 978-0-85310-260-1

    Google Scholar 

  • DEFRA, Department for Environment, Food and Rural Affairs (2008) The contribution that organic farming makes in supplying public goods. Available at http://randd.defra.gov.uk/Document.aspx?Document=EV02007_4601_FRP.pdf

  • DFID (UK Department For International Development) (2004) Agricultural sustainability. Working paper no. 12. DFID, London

    Google Scholar 

  • Gelfand I, Snapp SS, Robertson GP (2010) Energy efficiency of conventional, organic, and alternative cropping systems for food and fuel at a site in the U.S. Midwest. Environ Sci Technol 44(10):4006–4011

    Google Scholar 

  • Giampietro M, Mayumi K, Munda G (2006) Integrated assessment and energy analysis: quality assurance in multi-criteria analysis of sustainability. Energy 31(1):59–86. doi:10. 1016/j.energy.2005.03.005

    Article  Google Scholar 

  • Gomiero T, Paoletti MG, Pimentel D (2008) Energy and environmental issues in organic and conventional agriculture. Crit Rev Plant Sci 27(4):239–254. doi: 10.1080/07352680802225456

    Article  Google Scholar 

  • Goulding KWT, Trewavas AJ (2009) Can organic agriculture feed the world? AgBioView, 23 Jun. Available at http://www.agbioworld.org/

  • Goulding K, Jarvis S, Whitmore A (2008) Optimizing nutrient management for farm systems. Philos Trans R Soc B 363:667–680. doi:10.1098/rstb.2007.2177. Available at http://rstb.royalsocietypublishing.org/

    Google Scholar 

  • Gündoğmus E (2006) Energy use on organic farming: a comparative analysis on organic versus conventional apricot production on small holdings in Turkey. Energy Convers Manage 47:3351–3359

    Article  Google Scholar 

  • Guzmàn GI, Alonso AM (2008) A comparison of energy use in conventional and organic olive oil production in Spain. Agric Syst 98:167–176

    Article  Google Scholar 

  • Hatirli SA, Ozkan B, Fert C (2006) Energy inputs and crop yield relationship in greenhouse tomato production. Renewable Energy 31(4):427–438

    Article  Google Scholar 

  • Heichel GH (1980) Assessing the fossil energy costs of propagating agricultural crops. In: Pimentel D (ed) Handbook of energy utilization in agriculture. CRC Press, Boca Raton

    Google Scholar 

  • Hülsbergen K-J, Feil B, Diepenbrock W (2002) Rates of nitrogen application required to achieve maximum energy efficiency for various crops: results of a long-term experiment. Field Crops Res 77(1):61–76

    Article  Google Scholar 

  • Kaltsas AM, Mamolos AP, Tsatsarelis CA, Nanos GD, Kalburtji KL (2007) Energy budget in organic and conventional olive groves. Agric Ecosyst Environ 122:243–251

    Article  Google Scholar 

  • Kirchmann H, Thorvaldson G (2000) Challenging targets for future agriculture. Eur J Agron 12:145–161

    Article  Google Scholar 

  • Lawyer DS (2008) Human energy accounting. In: Encyclopedia of Earth. Available at www.lafn.org/~dave/

  • Lillywhite R, Chandler D, Grant W, Lewis K, Firth C, Schmutz U, Halpin D (2007) Environmental footprint and sustainability of horticulture (including potatoes) – a comparison with other agricultural sectors. Final report produced for DEFRA

    Google Scholar 

  • MAFF, Ministry of Agriculture, Fisheries and Food (2000) Study OF0182 – project “Energy use in organic farming systems” final project report. Archived at http://orgprints.org/8169

  • MAFF, Ministry of Agriculture, Fisheries and Food (2006) Energy use in organic farming systems (OF0182). Available at http://www2.defra.gov.uk/research/project_data/More.asp?I=OF0182. Last modified 20 Aug 2009

  • Mandal KG, Hati KM, Misra AK (2009) Biomass yield and energy analysis of soybean production in relation to fertilizer-NPK and organic manure. Biomass Bioenergy 3(3):1670–1679. doi:10.1016/j.biombioe.2009.08.010

    Article  Google Scholar 

  • McNeill AM, Eriksen J, Bergstrom L, Smith KA, Marstorp H, Kirchmann H, Nilsson I (2005) Nitrogen and sulphur management: challenges for organic sources in temperate agricultural systems. Soil Use Manage 21:82–93. doi:10.1079/SUM2005303

    Google Scholar 

  • Odum HT (1996) Environmental accounting: emergy and environmental decision making. Wiley, New York

    Google Scholar 

  • Ortiz-Cañavate J, Hernanz JL (1999) Energy for biological systems. In: International Commission of Agricultural Engineering (ed) CIGR handbook of agricultural engineering, vol 5. American Society of Agricultural Engineers, St Joseph

    Google Scholar 

  • Pimentel D (2003) Ethanol fuels: energy balance, economics, and environmental impacts are negative. Nat Resour Res 12(2):127–134, Jun 2003

    Google Scholar 

  • Pimentel D (2006) Impacts of organic farming on the efficiency of energy use in agriculture. The Organic Centre, Cornell University, Ithaca

    Google Scholar 

  • Pimentel D, Patzek TW (2005) Ethanol production using corn, switchgrass, and wood;biodiesel production using soybean and sunflower. Nat Resour Res 14(1):65–76. doi:10.1007/s11053-005-4679-8, Mar 2005

    Article  CAS  Google Scholar 

  • Powlson DS, Jenkinson DS, Johnston AE, Poulton PR, Glendining MJ, Goulding KWT (2010) Comments on “synthetic nitrogen fertilizers deplete soil nitrogen: a global dilemma for sustainable cereal production,” by R.L. Mulvaney, S.A. Khan, and T.R. Ellsworth in the Journal of Environmental Quality 2009 38:2295–2314. J Environ Qual 39:749–752. doi:10.2134/jeq2010.0001le

    Google Scholar 

  • Pretty J (2008) Agricultural sustainability: concepts, principles and evidence. Philos Trans R Soc B 363:447–465. doi:10.1098/rstb.2007.2163

    Article  Google Scholar 

  • Pretty JN, Noble AD, Bossio D, Dixon J, Hine RE, Penning De Vries FWT, Morison JIL (2006) Resource-conserving agriculture increases yields in developing countries. Environ Sci Technol 40(4):1114–1119

    Article  PubMed  CAS  Google Scholar 

  • Reganold JP, Jerry D, Glover JP, Andrews PK, Hinman HR (2001) Sustainability of three apple production systems. Nature 410:926–930, 19 Apr 2001

    Google Scholar 

  • Robertson GP, Vitousek PM (2009) Nitrogen in agriculture: balancing the cost of an essential resource. Annu Rev Environ Resour 34:97–125. doi:10.1146/annurev.environ.032108.105046

    Article  Google Scholar 

  • Robertson GP, Paul EA, Harwood RR (2000) Greenhouse gases in intensive agriculture: contributions of individual gases to the radiative forcing of the atmosphere. Science 289:1922–1925, Sep 2000

    Article  PubMed  CAS  Google Scholar 

  • Rogner H (2000) Energy resources. In: Goldemberg J (ed) World Energy Assessment. United Nations Development Programme, New York, pp 135–171

    Google Scholar 

  • Russo MA, Belligno A, Wu JY, Sardo VI (2010) Comparing mineral and organic nitrogen fertilizer impact on the soil-plant-water system in a succession of Three crops. Recent Res in Sci Technol 2(1):014–022, ISSN: 2076-5061

    Google Scholar 

  • Scialabba NE, Hattam C (2002) Organic agriculture, environment and food security, vol 4, Environment and natural resources management series. FAO, Rome. ISBN 9251048193

    Google Scholar 

  • Stolze M, Piorr A, Häring A, Dabbert S (2000) The environmental impacts of organic farming in Europe – organic farming in Europe: economics and policy. Universität Hohenheim, Stuttgart-Hohenheim. ISBN 3-933403-05-7

    Google Scholar 

  • Stopes C, Lord EI, Philipps L, Woodward L (2002) Nitrate leaching from organic farms and conventional farms following best practice. Soil Use Manage 18:256–263. doi:10. 1079/SUM2002128

    Article  Google Scholar 

  • Strapatsa AV, Nanos GD, Tsatsarelis CA (2006) Energy flow for integrated apple production in Greece. Agric Ecosyst Environ 116:176–180

    Article  Google Scholar 

  • Sullivan P (2003) Overview of cover crops and green manures – fundamentals of sustainable agriculture. ATTRA publication. IP024. http://attra.ncat.org/attra-pub/PDF/covercrop.pdf

  • Torstensson G, Aronsson H, Bergström L (2005) Nutrient use efficiencies and leaching of organic and conventional cropping systems in Sweden. Agron J 98:603–615. doi:10. 2134/agronj2005.0224

    Article  Google Scholar 

  • Trewavas A (2004) A critical assessment of organic farming-and-food assertions with particular respect to the UK and the potential environmental benefits of no-till agriculture. Crop Prot 23:757–781

    Article  Google Scholar 

  • Tzilivakis J, Warner DJ, May M, Lewis KA, Jaggard K (2005) An assessment of the energy inputs and greenhouse gas emissions in sugar beet (Beta vulgaris) production in the UK. Agric Syst 85:101–119. doi:10.1016/j.agsy.2004.07.015

    Article  Google Scholar 

  • Undersander D, Laboski C (2008) Late summer planting legumes to produce nitrogen credits for next year. University of Wisconsin. http://www.uwex.edu/ces/crops/teamforage http://www.uwex.edu/ces/crops/teamforage/TF_2009_POW_and_EVAL.doc

  • UNEP/CBD/SBSTTA/14/INF/34 (2010) Sustainable agriculture and the sustainable use of agricultural biodiversity: concepts, trends and challenges. Available at http://www.cbd.int/sbstta14/meeting/documents.shtml

  • University of California Sustainable Agriculture Research and Education Program (2010) Online covercrop database. Available at www.sarep.ucdavis.edu/cgi-bin/ccrop.ex

  • University of Manitoba (2005) Welcome to the Glenlea study – Canadas oldest organic-conventional crop comparison study. Available at http://www.umanitoba.ca/faculties/afs/plant_science/glenlea/glenleacurrent.html

  • USDA, United States Department of Agriculture, Natural Resources Conservation Service (2005) Use of manures or legumes for nutrients – conservation activity job sheet, Dec 2005

    Google Scholar 

  • Williams AG, Audsley E, Sandars DL (2006) Determining the environmental burdens and resource use in the production of agricultural and horticultural commodities. Main report. Defra research project IS0205. Cranfield University and Defra, Bedford. Available on www.silsoe.cranfield.ac.uk, and www.defra.gov.uk

  • Wu JY, Sardo V (2009) Sustainable vs organic agriculture – a review In: Lichtfouse E (ed) Sociology, organic farming, climate change and soil science, vol 3, Sustainable agriculture review. Springer, Dordrecht. doi: 10.1007/978-90-481-3333-8_3

    Google Scholar 

  • Ziesemer J (2007) Energy use in organic food system. Food and Agriculture Organization of the United States, Rome

    Google Scholar 

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Author information

Authors and Affiliations

  1. Research and Development Center for Grasses and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, P.R. China

    J. Y. Wu

  2. Department of Environmental Engineering, University of Novi Sad, Trg Dositeja Obradovića 6, 21000, Novi Sad, Serbia

    M. Martinov

  3. Department of Agricultural Engineering, University of Catania, via Santa Sofia, 100, 95123, Catania, Italy

    Vito I. Sardo

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  1. J. Y. Wu
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  2. M. Martinov
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  3. Vito I. Sardo
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Editors and Affiliations

  1. INRA-CMSE-PME, rue Sully 17, Dijon, 21000, France

    Eric Lichtfouse

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Wu, J.Y., Martinov, M., Sardo, V.I. (2011). Human Labour and Green Manure, Two Overlooked Factors for Energy Analysis in Agriculture. In: Lichtfouse, E. (eds) Genetics, Biofuels and Local Farming Systems. Sustainable Agriculture Reviews, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1521-9_7

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