Precision Farming at
J & I McGregor
David Fuller – Arable Technical Manager

What is Precision Farming ?
“A use of technologies such as GPS, sensors, satellites and computers to detect and treat in field variability”
- Agronomic perspective
- Environmental perspective
- Economic perspective

Where do we use precision farming ?
• Soil analysis
• Variable applications of P,K and lime
• Guidance
• Sprayer controls
• Variable nitrogen applications
• Yield mapping
• Combine Telematics

Soil Analysis

Variable Targeted Application of
Soil Nutrients
• Lime
• Phosphorous
• Potassium

10 Years of Variable Application

RTK – Real Time Kinetic
• Accuracy – sub 2cm
• Efficiency of machine operation
• Driver fatigue
• Aesthetics

Automatic Boom Switch off &
Levelling
• Accuracy of application
2 3 3 3 3 4 4 4 3 3 3 3 2
40 metres

Variable Targeted Application of
Nitrogen
• YARA N-Sensor

How the N-Sensor Works

Nitrogen Rate Decisions

YARA N – Sensor Biomass and
Application Maps

Harvest Team – Action from 2008

Yield Mapping

Combine Telematics

New Developments
Variable rate seed
Scanning Zoning Seed Rate

Team McGregor