Weeds, Pests, and Diseases

1
Weeds, Pests, and Diseases
2
Spatial distribution of weeds

• What are the distribution characteristics?
• What PA tools can be used to map?
• Far Remote Sensing
• Local Remote Sensing
• Field Checking/GPS Mapping

3
Spatial distribution of pests

• What are the distribution characteristics?
• What are the temporal (time) characteristics?
• What PA tools can be used to map?
• Remote Sensing
• Field Checking/GPS Mapping

4
Spatial distribution of diseases

• What are the distribution characteristics?
• What PA tools can be used to map?
• Remote Sensing
• Field Checking/GPS Mapping

5
Variable Rate Applications

• Use VRA equipment to treat targeted portions of a
  field.
• What are the economic issues?
• When does it become cost effective?
• What are the environmental issues.

6
Role of Precision Guidance

• Reduce need for herbicide by more precise
  mechanical cultivation
• Research on mapping plants (if it not a crop
  plant then it is a weed).

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Other treatment options

• Spot spraying
• Navigate to a point

8
Disease Studies

• NASA GRAPES Project.
• Analysis of Phylloxera Early Stress

9
Use of GIS for Spatial Analysis

• Research into how cropping patterns effect pest
  population dynamics
• Developing spatial relationships for pest
  problems.
• GIS for tracking chemical applications.

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The Role of Remote Sensing

• Early detection from aerial imagery
• Possible detection from ground equipment
• Mapping areas and spread

11
Roll of Modeling

• Currently used for prediction (ipm.ucdavis.edu)
• Potential for micro climate models and spatial
  analysis