Greenhouse gases emissions in sugarcane in Tucumán, Argentina: Incidence of trash burning and nitrogen fertilization
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Greenhouse gases emissions in sugarcane in Tucumán, Argentina: Incidence of trash burning and nitrogen fertilization

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Presentation of Jorge Chalco Vera at 2013 Kick-Off workshop of the Climate Food and Farming Network: http://ccafs.cgiar.org/climate-food-and-farming-network

Presentation of Jorge Chalco Vera at 2013 Kick-Off workshop of the Climate Food and Farming Network: http://ccafs.cgiar.org/climate-food-and-farming-network

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  • 1. PhD Thesis: Greenhouse gases emissions in sugarcane in Tucumán, Argentina: incidence of trash burning and nitrogen fertilization. Ing. Agr. Jorge Chalco Vera EEA Famaillá INTA-CONICET ARGENTINA
  • 2. One of the most important sources of anthropogenic GHG emissions is agriculture, producing 12-14% of the total GHG generated by humans (IPCC, 2006) 60 to 80% of the total emissions of N2O in the world comes from agricultural soils (Cameron et al., 2000; Wrage et al., 2004) Therefore, the study of fertilization is important. Argentinean agricultural and livestock sectors produce 44% of the total GHG emissions generated in the country Fundación Bariloche, 2005 However, these estimates were calculated using the international global factors proposed by IPCC, NOT WITH SPECIFIC LOCAL ONES.
  • 3. Treatments Native forest Sugarcane without trash burning after harvest Without nitrogen fertilization With nitrogen fertilization Sugarcane with trash burning after harvest Without nitrogen fertilization With nitrogen fertilization
  • 4. 1.6 m
  • 5. Closed vented chambers Protocol from USDA-ARS GRACEnet (Parkin et al., 2010). Close vented chambers circular Iron Anchor Height (cm) Area (cm2) 15 201.1 Volum (cm3) 3015.9 PVC Headspace
  • 6. Measurements Soil and air thermometers Chronometer Vacuum pump Evacuated vials
  • 7. Other Measurements Detail of logger Soil borer Soil N-NO3 and N-NH4 content and humidity Probes: «Loggers»
  • 8. Determination of soil microbial activity Fluorescein diacetate hydrolysis method. (Schnürer J. et al ., 1982)
  • 9. Flame ionization detector CO2 and CH4 Electron capture detector N2O Gas Chromatography Linear and non-linear regression models are used to obtain the emissions factors.
  • 10. Quantify GHG emissions from sugarcane in Tucumán, generating specific and local emission factors. For this: a) Determine the CO2, CH4 and N2O emission factors for sugarcane in Tucumán. b) Define the contribution of traditional agricultural practices of sugarcane (burning and fertilization) to GHG emissions. c) Compare the emissions in systems with different anthropogenic modifications (sugarcane cultivation) and a system without human disturbance (native forest). d) Determine the main soil, environmental and microbiological factors behind the emissions. e) Infer on possible crop management strategies that could serve as mitigation tools.
  • 11. Regarding the proposed project under the CLIFF grant in 2014 Host institution: Center for International Forestry Research (CIFOR), Nairobi-Kenya Directed by: Mariana Rufino -Senior Scientist in Forest and Environment Advisor researcher: Klaus Butterbach-Bahl The objective is to evaluate the potential GHG emissions in soil chronosequence studies The idea is to do a research GHG emissions in sugarcane in western Kenya, where there is an ongoing project. I will work in the field and in the lab, and I will learn all the techniques to do sampling and analyses.
  • 12. Thank you very much!!
  • 13. Soil nitrate and ammonium contents. Technique: distillation by steam Brenmer, 1965; Keeney and Nelson, 1982