Precision Agriculture in Arizona : A New   Research and Extension Program Pedro Andrade-S á nchez Agricultural and Biosy...
Modern technology for Precision Agriculture
Presentation Outline
Variable rate technology in Cotton Soil Electrical Survey. 20 ha field in Safford, AZ Veris sensor. Apparent Electrical Co...
VRT in Cotton. Prescription Mapping  Soil texture prediction. 20 ha field in Safford, AZ Note: Preliminary tests at MAC sh...
Detection of subsoil compaction
CIE i  = 0.216 CI i  + 2.601 d i  - 0.176 CI i  d i   (R 2  = 0.973)   CIE i *= 0.216*(2.0 MPa) + 2.601 d i  - 0.176*(2.0 ...
Draft and Fuel Consumption Current work: Tractor Instrumentation From N.E. Boon et al., 2005
Canopy multi-spectral reflectance
Effect of defoliation after 4 hours
Date 1 (June 20) Date 2 (July 7) Date 3 (July 21) Biomass dynamics (NIR band – 880 nm)
Auto-guidance: Extending infrastructure utilization
Auto-guidance: Linear distribution of plants
Auto-guidance: Linear distribution of plants Easting Error =  E i  – E a-b Planting w/ Autoguidance Conventional Planting
Yield monitoring
Yield monitoring: Small plot research Note: In 2009, yield monitoring using GPS-RTK improved spatial resolution
Future Work: Variable Rate Irrigation
Information Loop for Variable Rate Irrigation Chavez et al. 2007
Control System for Variable Rate Irrigation Chavez et al. 2007
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  1. 1. Precision Agriculture in Arizona : A New Research and Extension Program Pedro Andrade-S á nchez Agricultural and Biosystems Engineering Department Maricopa Agricultural Center, University of Arizona
  2. 2. Modern technology for Precision Agriculture
  3. 3. Presentation Outline
  4. 4. Variable rate technology in Cotton Soil Electrical Survey. 20 ha field in Safford, AZ Veris sensor. Apparent Electrical Conductivity (EC a )
  5. 5. VRT in Cotton. Prescription Mapping Soil texture prediction. 20 ha field in Safford, AZ Note: Preliminary tests at MAC show potential for salinity assessment
  6. 6. Detection of subsoil compaction
  7. 7. CIE i = 0.216 CI i + 2.601 d i - 0.176 CI i d i (R 2 = 0.973) CIE i *= 0.216*(2.0 MPa) + 2.601 d i - 0.176*(2.0 MPa) d i Mapped quantity: CIE i / CIE i * Algorithm for compaction assessment CIE i = Cone Index Equivalent (of the ith layer)
  8. 8. Draft and Fuel Consumption Current work: Tractor Instrumentation From N.E. Boon et al., 2005
  9. 9. Canopy multi-spectral reflectance
  10. 10. Effect of defoliation after 4 hours
  11. 11. Date 1 (June 20) Date 2 (July 7) Date 3 (July 21) Biomass dynamics (NIR band – 880 nm)
  12. 12. Auto-guidance: Extending infrastructure utilization
  13. 13. Auto-guidance: Linear distribution of plants
  14. 14. Auto-guidance: Linear distribution of plants Easting Error = E i – E a-b Planting w/ Autoguidance Conventional Planting
  15. 15. Yield monitoring
  16. 16. Yield monitoring: Small plot research Note: In 2009, yield monitoring using GPS-RTK improved spatial resolution
  17. 17. Future Work: Variable Rate Irrigation
  18. 18. Information Loop for Variable Rate Irrigation Chavez et al. 2007
  19. 19. Control System for Variable Rate Irrigation Chavez et al. 2007
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