3. INTEGRATED WEED CONTROL
Lars Baker
Fremont County Weed & Pest

4. Control Strategies Weed Identification Prevention Tillage Mowing
Crop Competition
Hand Pulling
Mulch
Grazing
Herbicides
Biological Control

5. Weed Identification Tools for Identification Basic Classification
Picture Books
Plant Keys
Herbarium
Basic Classification
Annual, Biennial, Perennial
Grasses, Forbs, Shrubs, Trees
Flowers, Fruits & Vegetative Parts

6. Field Bindweed

7. Weed Mapping Mapping drives control activity
Weed maps focus your energy
Prioritize resources
Mapping documents the process
Records treatments
Provides history
Mapping monitors program effectiveness
Still spreading or going away?

8. A Wide Spread Weed Problem

9. Prevention Species Selection Sanitation
Clean Seed
Clean Plant Stock
Clean Tools & Equipment
Clean Water
Clean Soil
Early Detection & Rapid Response
Containment & Quarantine

10. Tillage and Cultivation
Soil Disturbance
Perennial Weeds (Plants From Roots)
Poor Results
Dedication Required
Annual Weeds (Plants From Seeds)
Good Results
Timing Important

11. Mowing Perennial (Plants From Roots) Annual (Plants From Seed)
Cosmetic
Selective
Plant Adaptation
Annual (Plants From Seed)
Plant Demise

12. Mowing will not Control Quackgrass

13. Crop Competition What Plants Need To Grow
Temperature
Light
Water
Nutrients
Growing Medium
Air
Established Plants Prevent Germination
Light & Water Resources
Easily Combined With Mowing

14. Hand Pulling Labor Intensive Effective In Very Small Areas
Immediately Cosmetic
Highly Selective
Personal Satisfaction
Can Destroy Favorable Plants
Can Be Combined With Tillage

15. Mulch Perennial (Plants From Roots) Annuals (Plants From Seeds)
Limited Control
Grows Around
Grows Up Through
Waits Until Next Year
Excludes Light
Annuals (Plants From Seeds)
Prevents Seed Germination
Blocks Light
Holds Moisture
Enhances Bacterial Decomposition

16. Grazing
Livestock Species
Timing
Intensity
Selectivity

17. Herbicides Over 150 Chemical Compounds on the Market
Two Big Jumps in Corn Yield
1955 and 1965
Concentrated Energy in a Can
Formulated to Allow Convenient or Efficient Application of the Active Ingredients

18. Classifications Of Herbicides
Systemic vs. Contact
Xylem or Phloem
Foliage vs. Root Adsorption
Organic or Inorganic Chemistry
Timing of Use- Pre or Post
Formulation
Mode of Action
Market

19. Herbicide Selectivity
Seed Size
Planting Depth
Plant Cuticle
Plant Shape
Plant Size
Plant Genetics
Surfactants

20. Application Tools Spray Bottle Backpack Sprayer Motorized Sprayers
Granular Applicators
Aerosol Sprays
Fertilizer Impregnation
Paint brush/Paint roller

21. Application Technology
Broadcast- Spray Entire Area
Band- Spray Strips Over a Row Crop
Spot Treat- Spray Individual Weeds
High or Low Volume
Micro Rates
Herbigation

22. Calibration Nozzle Size & Type Pressure Speed Dilution Carrier Pattern
Droplet Size
Volume
Pressure
Speed
Dilution
Carrier

23. Controlling Pesticide Contamination
Drift
Droplet Size
Distance To The Target
Wind Speed & Direction
Movement of Treated Soil
Ground & Surface Water Contamination

24. Biological Control Non-Persistent Persistent Augmentive Bio-herbicides
Introduced Weeds
Introduced Natural Enemies
Restore Balance

25. THE END