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Ken Coles M.Sc. P.Ag .

Sorting Through the Layers Of Precision Agriculture Farmer Smarter Conference Lethbridge, AB, December 4, 2013. Ken Coles M.Sc. P.Ag . 1.Producer knowledge. 2. Aerial Imagery/ Orthophotos. 3.Soil Apparent Electrical Conductivity ( ECa ) Mapping Sensors.

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Ken Coles M.Sc. P.Ag .

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  1. Sorting Through the Layers Of Precision Agriculture Farmer Smarter Conference Lethbridge, AB, December 4, 2013 Ken Coles M.Sc. P.Ag.

  2. 1.Producer knowledge 2. Aerial Imagery/Orthophotos 3.Soil Apparent Electrical Conductivity (ECa) Mapping Sensors 4. Digital Elevation Models (DEMs) 5. Yield Maps 6. Aerial Imagery from UAV –based Sensors 7. Satellite-based NDVI imagery 8. Ground-based vegetation sensors (greenseeker) 9. Grid soil sampling

  3. Understanding Soil Variability for Effective Zone Management in Precision Agriculture – an evaluation of sensor based soil mapping tools. • Multidisciplinary team of experts in precision agriculture, agronomy, soils, GIS, spatial statistics, remote sensing, salinity, economics • Data collection: all layers, EC twice per sensor, field scale replicated response trials • Evaluate multiple zones after the fact using field trial, conventional and spatial stats.

  4. Variable Rates: Nitrogen (lbs/ac): 0, 30, 60, 90, 120 Seeding Rates (seed/m2): 250 , 350

  5. RTK > RTX > SF2=OmnistarHP > Ominstar XP=SF1 > Glonass > WAAS

  6. Lessons: • Trying to do anything with Ag GPS beyond auto-steer is like herding cats! • Calibration is critical • Accurate GPS is important for minimizing error • Constant and reasonable speeds are required • Soil moisture important, frost free window is small • Veris more costly & slower but can add OM and pH sensor • The devils in the detail!

  7. Ken Coles M.Sc., B.Sc., P.Ag. General Manager Farming Smarter #100 5401 – 1st Ave. South Lethbridge, AB T1J 4V6 ken@farmingsmarter.com www.farmingsmarter.com twitter: @killerkencoles office: 403-381-5118 cell: 403-317-0757

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