The effect of tillage practice and residue management   on wheat yield and yield stability in two agro-         ecological...
Two cropping systems        Cd. Obregón (39 m):        Irrigated wheat-based system                     El Batán (2249 m) ...
Strategic research ● Long-term and component technology trials ● Different environments  Contrasts and similarities => pr...
El Batán: Characteristics●   Non-equatorial semi-arid highlands (2240 masl)●   Rain fed agriculture●   Periodical drought●...
El Batán: Characteristics● Soil: Haplic Phaeozem       (Clayic)
El Batán: target environment
Treatments● Zero tillage● Conventional tillage   after harvest     One pass with a chisel plough to 30 cm depth     Two...
Govaerts et al., 2005Govaerts et al., 2005
Govaerts et al., 2005Govaerts et al., 2005
Zero vs. Conventional                                ZT   CTGovaerts et al., 2005        Govaerts et al., 2005
Total monthly precipitation(mm) El Batán, México          Average                     2008     2009Month    1991-2007June ...
Zero vs. Conventional                          ZT   CT  Govaerts et al., 2005
El Batán: results                                 8                                 7 Grain yield (t/ha at 12% H2O)       ...
El Batán: resultsManagement                 Average yield             Coefficient ofpractice                (t ha-1 at 12%...
El Batán: results                 Management                  Slope          Inter-   R²                 practice         ...
Cd. Obregón: Characteristics● Arid coastal plains (39 masl)● Irrigated agriculture● Irrigation applied in furrows
Cd. Obregón: Characteristics● Soil: Haplic Vertisol  (Calcaric, Chromic)                15 cm                35 cm        ...
Cd. Obregon: target environment
Treatments● Permanent beds● Conventional tillage   after harvest of each crop     disk harrow to 0.20 m depth (2–3 passe...
Cd. Obregón: results                                     8.0     Grain yield (t/ha at 12% H2O)                            ...
Cd. Obregón: results Management             Average yield                  Coefficient of practice            (t ha-1 at 1...
Cd. Obregón: results                                     8.5Treatment yield (Mg/ha at 12% H2O)                            ...
Conclusion● CA highest yielding in both environments● Differences in stability were only found in rain  fed, more adverse ...
http://conservacion.cimmyt.orgThank you for your attention
The effect of tillage practice and residue management on wheat yield and yield stability in two agro-ecological environmen...
The effect of tillage practice and residue management on wheat yield and yield stability in two agro-ecological environmen...
The effect of tillage practice and residue management on wheat yield and yield stability in two agro-ecological environmen...
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The effect of tillage practice and residue management on wheat yield and yield stability in two agro-ecological environments in Mexico. Bram Govaerts

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A presentation from the WCCA 2011 event held in Brisbane, Australia.

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The effect of tillage practice and residue management on wheat yield and yield stability in two agro-ecological environments in Mexico. Bram Govaerts

  1. 1. The effect of tillage practice and residue management on wheat yield and yield stability in two agro- ecological environments in Mexico
  2. 2. Two cropping systems Cd. Obregón (39 m): Irrigated wheat-based system El Batán (2249 m) Mexico Rainfed highland system City
  3. 3. Strategic research ● Long-term and component technology trials ● Different environments Contrasts and similarities => process level Keeps thinking flexible Obregon => mimic environments ● Network of excellence ● Center of training => on farm trials
  4. 4. El Batán: Characteristics● Non-equatorial semi-arid highlands (2240 masl)● Rain fed agriculture● Periodical drought● Periodical water excess● Wind and water erosion● Grain yield < 2 ton ha-1
  5. 5. El Batán: Characteristics● Soil: Haplic Phaeozem (Clayic)
  6. 6. El Batán: target environment
  7. 7. Treatments● Zero tillage● Conventional tillage  after harvest  One pass with a chisel plough to 30 cm depth  Two passes with a disk harrow to 20 cm depth and two passes with a spring tooth harrow to 10 cm.  The spring tooth harrow was used when needed for weed control (typically twice) during the winter fallow season.  the seed bed preparation  One pass with a chisel plough to 30 cm depth  Two passes with a disk harrow to 20 cm depth and one pass with a spring tooth harrow to 10 cm
  8. 8. Govaerts et al., 2005Govaerts et al., 2005
  9. 9. Govaerts et al., 2005Govaerts et al., 2005
  10. 10. Zero vs. Conventional ZT CTGovaerts et al., 2005 Govaerts et al., 2005
  11. 11. Total monthly precipitation(mm) El Batán, México Average 2008 2009Month 1991-2007June 106 102 105July 116 102 39August 117 153 63
  12. 12. Zero vs. Conventional ZT CT Govaerts et al., 2005
  13. 13. El Batán: results 8 7 Grain yield (t/ha at 12% H2O) 6 5 4 3 2 1 0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Year ZT-Keep ZT-Remove CT-Keep CT-Remove ZT-KeepM1/3W ZT-Keep1/2CT: conventional tillage; ZT: zero tillage
  14. 14. El Batán: resultsManagement Average yield Coefficient ofpractice (t ha-1 at 12% H2O) variation (%)CT-Keep 5.31 BC 22.3 BCT-Remove 5.04 C 23.2 BZT-Keep 5.96 A 19.0 BZT-Remove 3.92 D 35.8 AZT-Keep M1/3W 4.93 C 33.8 AZT-Keep1/2 5.59 AB 24.7 B CT: conventional tillage; ZT: zero tillage
  15. 15. El Batán: results Management Slope Inter- R² practice cept CT-Keep 0.82 1.12 0.85 CT-Remove 0.88 0.52 0.86 ZT-Keep 0.82 1.77 0.80 ZT-Remove 1.06 -1.49 0.86 ZT-Keep M1/3W 1.33 -1.90 0.97 ZT-Keep1/2 1.09 -0.02 0.94 CT: conventional tillage; ZT: zero tillage
  16. 16. Cd. Obregón: Characteristics● Arid coastal plains (39 masl)● Irrigated agriculture● Irrigation applied in furrows
  17. 17. Cd. Obregón: Characteristics● Soil: Haplic Vertisol (Calcaric, Chromic) 15 cm 35 cm 80 cm 110 cm
  18. 18. Cd. Obregon: target environment
  19. 19. Treatments● Permanent beds● Conventional tillage  after harvest of each crop  disk harrow to 0.20 m depth (2–3 passes)  the seed bed preparation  Remaking the beds => weed control
  20. 20. Cd. Obregón: results 8.0 Grain yield (t/ha at 12% H2O) 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Year CTB-Keep PB-Burn PB-Remove PB-Partial PB-KeepCTB: conventionally tilled beds; PB: permanent beds
  21. 21. Cd. Obregón: results Management Average yield Coefficient of practice (t ha-1 at 12% H2O) variation (%) CTB-Keep 7.01 BC 10.69 A PB-Burn 6.65 C 11.66 A PB-Remove 7.24 AB 9.53 A PB-Partial 6.91 BC 10.28 A PB-Keep 7.42 A 8.65 A CTB: conventionally tilled beds; PB: permanent beds
  22. 22. Cd. Obregón: results 8.5Treatment yield (Mg/ha at 12% H2O) 8.0 Management Slope Inter- R² 7.5 practice cept 7.0 CTB-Keep 1.07 -0.52 0.95 PB-Burn 1.09 -0.98 0.91 6.5 PB-Remove 0.96 0.42 0.96 6.0 PB-Partial 1.00 -0.11 0.93 5.5 PB-Keep 0.85 1.44 0.91 5.0 CTB: conventionally tilled beds; PB: permanent 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 beds Year mean yield (Mg/ha at 12% H2O) CTB-Keep PB-Burn PB-Remove PB-Partial PB-Keep Linear (CTB-Keep) Linear (PB-Burn) Linear (PB-Remove) Linear (PB-Partial) Linear (PB-Keep)
  23. 23. Conclusion● CA highest yielding in both environments● Differences in stability were only found in rain fed, more adverse conditions● Straw fully removed or burned combined with ZT is not sustainable● More research is needed to design optimal systems with partial residue retention
  24. 24. http://conservacion.cimmyt.orgThank you for your attention

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