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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.

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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  • 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. UPLAND RICE PRODUCTION AREA• Approach “Survey”: Historical Upland Rice Yield Data from 1976 to 2006 (free)
  • 3. YIELD DETRENDHistorical Yield = interaction (climate variability x technological advances)
  • 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. Checking Environment Groups with MTEs Enviroments for the Mult Trial Experiments HFE FE LFE Uncertainty 150235 436484 656363 index
  • 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. 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. 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. 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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