1. Precision Agriculture an Overview

2. What is Precision Agriculture?
Treating small areas of a field as separate management units for the purpose of optimizing crop production based on in-field variability

3. Site Specific Management
The application of an input to a specific area based on the evaluation of variability of the need for that input. Richardson, 1996.
Recognition of site-specific differences within fields and tailoring management accordingly, instead of managing an entire field based on some hypothetical average. Emmert, 1995.

4. Definitions of Precision Agriculture
Using information to better manage farms at the field level or finer resolution.
Optimizing inputs to produce the largest net income.
Combine yield monitors, GPS, Grid Soil Sampling.

5. What is Precision Farming?
Management by the Field
Management by the foot
Global Positioning Systems
Yield Monitors
Sensor Based Weed Control
Grid Sampling
Variable Rate Fertilizer Application

6. Oklahoma State University’s Definition of Precision Agriculture
Variable rate application of fertilizers, pesticides or other based on the sensed needs of the crop within the following constraints:
Available Technology
Agronomic
Economic

7. Large Scale (Macro) Variability Within a Field

8. Small Scale (Micro) Variability Within a Field

9. Variability in Weed Populations

10. Variability in Grain Yield

11. Map Based - Precision Farming
Management
Computer
Yield Map
GIS - Precision
Farming
Software
GPS Referenced Soil Samples
Fertilizer Prescription
GPS Constellations
Aerial and Satellite Images
Soils Maps, Elevation Maps, etc.

12. On-the- Go Sensing of Plant Needs and Variable Rate Treatment
Spray Nozzle
Direction
of Travel
Computer and
Sensor
Assembly
Decision Making
And Agronomic Strategy
Plant