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Does Climate Smart Agriculture Lead to Resilience?

  1. Does Climate Smart Agriculture Contribute to Resilience? Alex De Pinto Senior Research Fellow Environment and Production Technology Division International Food Policy Research Institute Addis Ababa, MAY 2014
  2. A few definitions  From one of the last documents circulated by the CSA Alliance: Climate Smart Agriculture, three pillars • Sustainably increasing agricultural productivity; • Adapting and building resilience to climate change; • Mitigating greenhouse gas emissions.  Distinction between Adaptation and Resilience: • Adaptation capacity: the ability of humans to deal with change in their environment (Folke et al., 2004). Page 2
  3. An empirical example from India  ACIAR project on: Capturing the potential for greenhouse gas offsets in Indian agriculture  Period under consideration 2010-2050  Essential components are: • IMPACT model: a global partial equilibrium model of agricultural commodities • A spatially-explicit model of land use choices which captures the main determinants of land use choices • Crop model (DNDC) to simulate yield, GHG emissions, and changes in soil organic carbon Page 3
  4. Data and Simulations  Basic data on output prices (country-wide) and production costs (state-wide) taken from the Agricultural Statistics, 2013.  Extensive (but not exhaustive yet) search of published, and not yet published, data on changes in production costs related to adoption of alternative agricultural practices.  From DNDC we derive: • Yields changes • Carbon dioxide (CO2, from mineralization of organic matter) • Nitrous oxide (N2O) • Methane (CH4) • Soil organic carbon (SOC) accumulation/depletion Page 4
  5. Simulated Cropping Systems Cropping system Karif Rabi Groundnut-wheat Groundnut Wheat Maize-wheat Maize Wheat Pearl millet-wheat Pearl Wheat Rice-fallow Rice fallow Rice-pulses Rice pulses Rice-rice Rice Rice Rice-wheat Rice Wheat Sorghum-wheat Sorghum Wheat Soybean-wheat Soybean Wheat Source: Efficient alternative cropping systems. Gangwar and Singh, 2012 Page 5
  6. Simulated Practices Management technique Description Conventional Prior to first crop in rotation tillage to 30cm depth; subsequent tillages (following each crop in rotation) to 10cm depth. fertilizer N applied as urea on plant date; manure applied on plant date No-till Tillage only mulches residue AWD Rice paddy is initially flooded to 10 cm – water level is reduced at rate of -0.5 cm/day to -5cm and then re-flooded at rate of 0.5 cm/day till to 10 cm No-till + organic fertilizer (manure) Tillage only mulches residue 50% of chemical fertilizer N replaced with organic fertilizer N (manure) Page 6
  7. Technical Mitigation Potential Page 7
  8. Relevant Information: CSA (calculated from a selection of states)  Effects of Adoption of Select Mitigation Practices on Yields  Effects of Adoption of Select Mitigation Practices on GWP  Effects of Adoption of Select Mitigation Practices on SOC  Effects of Adoption of Select Mitigation Practices on Net Revenues Page 8
  9. Climate Smart Agriculture Sustainably Increase Productivity Adaptation Mitigation Best CSA Output SOC SOC Net Revenue GWP No Till + + ++ + + Org. Fert. + No Till -- -- +++ -- ++ AWD - + + 0 +++ Page 9
  10. Sustainably Increase Productivity Adaptation Mitigation Best CSA Output SOC SOC Net Revenue GWP No Till + + ++ + + Org. Fert. + No Till -- -- +++ -- ++ AWD - + + 0 +++ Page 10
  11. Sustainably Increase Productivity Adaptation Mitigation Best CSA Output SOC SOC Net Revenue GWP No Till + + ++ + + Org. Fert. + No Till -- -- +++ -- ++ AWD - + + 0 +++ Page 11
  12. Sustainably Increase Productivity Adaptation Mitigation Best CSA Output SOC SOC Net Revenue GWP No Till + + ++ + + Org. Fert. + No Till -- -- +++ -- ++ AWD - + + 0 +++ Page 12
  13. Relevant Information: Resilience (resilience refers to the production system)  Effects of Adoption of Select Mitigation Practices on Yields under extreme events  Effects of Adoption of Select Mitigation Practices on Yield variability  Climate extremes were calculated by considering 97.5 and 0.25 percentiles based on annual precipitation records for the period of 2004 to 2050 at each pixel. Then assumed that climate extremes would be. upper 2.5% and lower 2.5% events at each pixel Page 13
  14. CSA vs. Resilience Sustainably Increase Productivity Adaptation Mitigation Resilience Output SOC SOC Net Revenue GWP Better Output in Weather Extreme years Reduced yield variability Net Revenue No Till + ++ ++ + + + - + Org. Fert. + No Till - - +++ +++ - - ++ - - - - - - AWD - + + 0 +++ - + 0 Page 14
  15. Conclusions  There seems to be compatibility between CSA and increased resilience of the productive system, but….  We first need to fully explore and agree on the definition of CSA, i.e. boundaries and trade-offs,  The analysis results indicate a large spatial variability: difficult to make blanket statements of best practices,  This type of multi-objective analysis becomes complicated very quickly and it complicates the formulation of policy recommendations. Page 15
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