HOR 236 Integrated Pest Management: Weeds

Lecture Hours: 3
Credits: 3

Presents an integrated approach to weed management in the nursery and greenhouse. Reviews weed biology. Emphasizes identification, monitoring, and assessment of common weeds. Focuses on prevention, sanitation, and cultural practices to manage weed problems. Covers preemergent and post emergent application of herbicides.

Student Learning Outcomes:

Identify weed species common to nurseries and greenhouses.
Apply a scouting program for weeds in a greenhouse or nursery.
Use preventive strategies for weed management in a greenhouse or nursery.
Develop a weed management plan utilizing sanitation and cultural practices.
Recommend appropriate herbicide treatments for weed outbreaks.

Content Outline

Overview of Integrated Pest Management
- Definition
- Economics
- Environmental benefits
Weed Biology
- Life cycles
  - Annuals
  - Biennials
  - Perennials
- Dispersal mechanisms
- Sources of weed seed
- Identification
  - Greenhouse weeds
  - Container weeds
  - Field weeds
  - Aquatic weeds and algae
Weed Monitoring
- Scouting/record keeping
- Assessment
- Common/noxious weeds
Integrated Strategies for Weed Management
- Strategies for different systems
  - Greenhouse
  - Container
  - Field
  - Aquatics
- Strategies for different life cycles
  - Annual
  - Biennial
  - Perennial
- Preemergent strategies
  - Site selection and preparation
  - Media preparation
  - Sanitation
  - Exclusion
  - Solarization
  - Rotation
  - Cover crops
  - Competition
  - Shading
  - Barley straw
  - Herbicides
- Postemergent strategies
  - Handweeding/hoeing
  - Cultivation
  - Mowing
  - Mulching
    - Flaming
    - Skimming
    - Herbivory
    - Herbicides