1. What is a pest? An organism that has a harmful effect on the plant.
Objective 2: Identify Pests
What is a pest?
An organism that has a harmful effect on the plant.

2. Common Types of Pests Insects Weeds Fungus Bacteria Rodents
Objective 2: Identify Pests
Common Types of Pests
Insects
Managed with insecticides
Weeds
Managed with herbicides
Fungus
Managed with fungicides
Bacteria
Managed with bactericides
Rodents
Managed with rodenticides

3. Insect Pests
Managed with an Herbicide

4. Aphid Symptom: Curled Leaves, “Honey Dew”
Objective 2: Identify Pests
Aphid
Symptom: Curled Leaves, “Honey Dew”
Control: Spray with Water, Lady Bugs, Lacewings
Prevention: Dormant Oil

5. Borer Symptom: Holes in mature wood of trees
Objective 2: Identify Pests
Borer
Symptom: Holes in mature wood of trees
Control: Spray with insecticide before larva emerges. Prevention is best control
Prevention: Reduce tree stress- Proper Nutrition

6. Scale Symptom: Small hard shells, coverings on branches
Control: Insecticide-Dinotefuran, Lady Beetles
Prevention: Dormant Oil, Pruning,

7. Thrips Symptom: Yellow & black specks
Control: Insecticides, Hunter Thrips
Prevention: Spray plants off, Reduce Stress, Mulch

8. Spider Mite Symptom: Scorching of leaves, white dusty areas
Objective 2: Identify Pests
Spider Mite
Symptom: Scorching of leaves, white dusty areas
Control: Predator Mites, Lady Beetles
*Most insecticides kill natural predators
Prevention: Selective use of pesticides

9. White Fly Symptom: Waxy areas, “honey-dew,” black mold
Objective 2: Identify Pests
White Fly
Symptom: Waxy areas, “honey-dew,” black mold
Control: Sticky traps, Lady-bugs, Lacewings
Prevention: Systemic insecticides

10. White Grub Symptom: Brown patches in lawn
Objective 2: Identify Pests
White Grub
Symptom: Brown patches in lawn
Control: Parasitic nematodes, Insecticide- June 15th
Prevention: Insecticides

11. Weed Pests Types Can be managed with an Herbicide
Objective 2: Identify Pests
Weed Pests
Can be managed with an Herbicide
Types
Pre-Emergent: Prevent seeds from germinating
Broad spectrum: Variety of plants
Selective : Narrow range of plants
Contact - Kill plant tissue at or near the point of contact Require even coverage in application.
Systemic - these move through the plant tissues via vascular bundles

12. Objective 2: Identify Pests
1. Puncher Weed
Control: Remove adult plants to prevent future seedlings

13. 2. Large Crabgrass Control: Herbicide before to seed setting
Objective 2: Identify Pests
2. Large Crabgrass
Control: Herbicide before to seed setting

14. 3. Quackgrass Control: Herbicides, Pre-Emergents
Objective 2: Identify Pests
3. Quackgrass
Control: Herbicides, Pre-Emergents

15. 4. Green Foxtail Control: Pre-Emergents, Herbicides
Objective 2: Identify Pests
4. Green Foxtail
Control: Pre-Emergents, Herbicides

16. 5. Bull Thistle Control: Pre-Emergent, Herbicide
Objective 2: Identify Pests
5. Bull Thistle
Control: Pre-Emergent, Herbicide

17. Fungi Pests Can be killed/managed with a fungicide
Objective 2: Identify Pests
Fungi Pests
Can be killed/managed with a fungicide

18. 1. Necrotic Ring Spot Symptoms: Dead circles Control: Very Difficult!
Objective 2: Identify Pests
1. Necrotic Ring Spot
Symptoms: Dead circles
Control: Very Difficult!
Aeration, preventive fungicides, shortly mowed

19. Objective 2: Identify Pests
2. Powdery Mildew
Symptoms: White powder on leaves, especially in shady areas.
Control:
Preventive fungicides,
Resistant varieties
Water in morning

20. 3. Fire Blight Symptoms: Oozing cankers
Objective 2: Identify Pests
3. Fire Blight
Symptoms: Oozing cankers
Control: Removing contaminated growth.
Sterilize between cuts!

21. Rodent Pests Can be managed with a rodenticide or traps
Objective 2: Identify Pests
Rodent Pests
Can be managed with a rodenticide or traps

22. Voles Objective 2: Identify Pests
Burrow through lawns- especially during winter months
Feed on roots and stems of plants

23. Gopher Objective 2: Identify Pests
Feeds on roots of plants & burrows into the ground

24. Infectious vs. Non-infectious Diseases
Objective 2: Identify Pests
Infectious vs. Non-infectious Diseases
Infectious plant diseases can be transferred to surrounding plants
Example: Fire Blight
When treating plants with infectious diseases be sure to sterilize equipment between each cut to prevent spreading.
Non-infectious are not transferred
to surrounding plants