Determination of environment groups and TPE characterization (Zoom-in)

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Presented by Michael Dingkuhn at the CCAFS Workshop on Developing Climate-Smart Crops for a 2030 World, ILRI, Addis Ababa, Ethiopia, 6-8 December 2011.

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Determination of environment groups and TPE characterization (Zoom-in)

  1. 1. Determination of Environment Groups and TPE Characterization (Zoom-in) Bryan Alexandre (EMBRAPA)Developing Climate-Smart Crops for a 2030 World Workshop ILRI, Addis Ababa, Ethiopia 6-8 December 2011
  2. 2. UPLAND RICE PRODUCTION AREA• Approach “Survey”: Historical Upland Rice Yield Data from 1976 to 2006 (free)
  3. 3. YIELD DETRENDHistorical Yield = interaction (climate variability x technological advances)
  4. 4. 100 80Probability of Exceeding (%) 60 40 20 LFE FE HFE 0 500 1000 1500 2000 2500 3000 3500 4000 -1 Adjusted Yield (kg ha )
  5. 5. Checking Environment Groups with MTEs Enviroments for the Mult Trial Experiments HFE FE LFE Uncertainty 150235 436484 656363 index
  6. 6. Environment Group Characterization• Enviroment Group → Target Population Enviroment; – Define the main constraints for increasing yield; • HOW??? – Participatory Breeding; – Work Researcher Time Meetings; – Mult Trial Experiments (MTEs) and other technics. • Example: Main Constraints – DROUGTH – Application of crop model (RICE – ECOTROP, CIRAD) for TPE characterization (water stress index)
  7. 7. PROFILE STRESS FOR THE TPE UPLAND RICE SHORT CULTIVAR Days After Emergence 24 31 38 45 52 59 67 73 80 1.0 0.9 0.8Estress Level 0.7 0.6 stress L – no soil amendment stress M – no soil amendment stress T – no soil amendment stress L – soil amendment 0.5 stress M – soil amendment stress T – oil amendment Reproductive Grain Filling Phase 0.4 400 500 600 700 800 900 1000 1100 1200 Degree Days ( C.Day)
  8. 8. TPE x Site (Planting Date) L M T cnpaf-dec-31No Soil Amendment cnpaf-dec-15 cnpaf-dec-01 cnpaf-nov-15 cnpaf-nov-01 TPE-dec-31 TPE-dec-15 TPE-dec-01 TPE-nov-15 TPE-nov-01 TPE-dec-31 TPE-dec-15 Soil Amendment TPE-dec-01 TPE-nov-15 TPE-nov-01 cnpaf-dec-31 cnpaf-dec-15 cnpaf-dec-01 cnpaf-nov-15 cnpaf-nov-01 0 10 20 30 40 50 60 70 80 90 100 Frequency of Stress (%)
  9. 9. TPE x Interannual and Site Variation Soil Amendment Scenario TPE Site 1 Site 2 T M L T M L T M L 1999 2000Year 2001 2002 2003 Stress Frequence (%) Stress Frequence (%) Stress Frequence (%)

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